Three comments on the summary of road and bridge practice

Road and bridge construction is an important part of national and regional overall construction, and also a key node of highway development. In the new era, it is necessary to form an atmosphere of comprehensive application of road and bridge technology. This paper summarizes the model essay for road and bridge practice for reference only.

Summary model of road and bridge practice:

The short graduation internship will soon be over. In this graduation internship, with the help of the workers' masters and engineers at the internship site, I humbly asked them for advice and learned the professional knowledge puzzles and problems that appeared during the internship. Through this internship, I gained a lot, not only learned a lot of professional knowledge, but also learned a lot from the old-timers of construction workers. The experience since the internship is summarized as follows:

Because we didn't do this internship until we finished all the professional courses, this internship is more targeted and practical than any previous internship. I didn't start my internship until I finished the courses of engineering survey, bridge engineering, subgrade and pavement design. Through this internship, I have a better understanding of the study of professional knowledge, and then I can better master and use professional skills in my future work and study. First of all, through this graduation internship, I have a deeper understanding of our professional knowledge of roads and bridges. After three years of professional basic courses and specialized courses, the university has gradually mastered solid professional knowledge. However, what I learned in school is all theoretical knowledge, and it is far from enough to learn and apply theoretical knowledge in practice except for professional practice in classes and holidays. Through this internship, I have a correct understanding of the problems and shortcomings in my previous study and internship.

The knowledge learned in previous textbooks is the most basic content, and the models and principles used are also the simplest types. However, with the standardization and integrity of China's construction industry and people's higher requirements for building safety, rationality and economy, various problems and doubts are easy to appear in the project. How to deal with these problems quickly and correctly? I think that is to use the knowledge and principles we have learned to find out the "bottleneck" according to the problem and find the breakthrough to solve it. In fact, we have learned a lot about these basic knowledge and principles, but how to link them together and solve practical problems harmoniously and engineering needs us to learn and summarize in practice. Another aspect of "applying what you have learned" is "seeing the big from the small". A lot of knowledge and principles are often the key to solving problems. Secondly, through this graduation practice, I realized the importance of construction management. Whether engaged in design, construction or supervision, we should pay attention to improving the efficiency of construction management. The advanced management concepts and methods of several engineering units in this graduation practice are worth learning. Especially the engineering practice in Putian, gave me the deepest feeling.

Road and bridge construction management has many contents, a wide range of considerations, and a larger amount of tasks to be arranged, but it is directly related to the progress and efficiency of civil engineering. The most impressive road and bridge project, so the staff carry out their duties and all the work is carried out in an orderly way. The workers are busy but orderly on the construction site, and the builder, safety officer and supervisor are also working step by step, seriously improving the construction efficiency to the best, and the project leader is on the spot to guide. Therefore, all the work is planned. In addition, construction management also includes skills training for employees, who practice in Putian Xiangang Avenue project. By introducing advanced management mode and scientific management method, the construction efficiency is greatly improved, which is very helpful to the continuity and sustainability of construction. Finally, through this graduation internship, I have a more comprehensive understanding of the direction of future efforts. In fact, it is really difficult to learn more knowledge and skills in such a short graduation internship.

However, during my graduation practice these days, I clearly realized the direction of road and bridge engineering work from a more comprehensive perspective. As many teachers and workers' masters said in their internships, "What is needed to engage in road and bridge engineering after graduation is modesty and learning".

Indeed, after graduating from college and taking up a new job, we are faced with a blank sheet of paper. Everything is new, and everything is waiting for us to work hard. So in the face of so many predecessors who have been engaged in road and bridge engineering for a long time, their work experience is richer than ours, their knowledge is more solid than ours, and their knowledge is deeper than ours. Only by patiently asking them for advice and learning with an open mind can we make greater progress, and we will also have greater gains in the hard and challenging field of woodworking. In addition, in this graduation internship, I also found some shortcomings and deficiencies, mainly the following three points:

First, the mastery of professional knowledge is not comprehensive enough. Although I have studied professional knowledge seriously in three years in college, my current knowledge is not wide enough to be easily qualified for civil engineering work. Therefore, although I am about to go to work, I will regard work as the beginning of a new study. Only by studying in practice can I master more professional knowledge and skills.

Second, professional practical experience is far from rich. Due to the lack of professional practice time in the past, it is difficult to apply what you have learned to practice, and the experience gained through practice is even scarcer. Therefore, in the future, we must seize the opportunity to learn from the masters of road and bridge engineering workers, at the same time, we must change our learning methods and attitudes, change the passive absorption learning style that relied too much on teachers in the past, actively learn from others and ask for advice, and at the same time strengthen our self-study ability and ability to control and solve problems.

Third, the application of professional knowledge in engineering is not flexible enough. Through this graduation internship, I really feel that the professional knowledge I learned before is not flexible. This is mainly because the knowledge learned has not formed a complete system, and these scattered knowledge points are difficult to use. Therefore, in the future, we should pay attention to accumulation and application in study and practice, so as to make the learned knowledge change from quantitative to qualitative and play a greater guiding role. The graduation internship will be over soon, but through this short internship, I only learned a lot of knowledge that was difficult to learn in textbooks before. These new gains will have more realistic guiding significance for our ongoing graduation design preparation and upcoming work.

Summary model of road and bridge practice:

First, the purpose of the internship:

(1) integrating theory with practice. Verify, consolidate and deepen the theoretical knowledge that has been learned, and accumulate knowledge for future work;

(2) Cultivate the ability to analyze, handle and summarize engineering and technical problems independently;

(3) Understand the current organizational structure and management measures of road and bridge enterprises;

(4) Expand the technical field of vision and understand the situation of adopting new structures, new technologies, new materials and new processes.

Second, the internship unit

Third, the internship time

2011March 15 to 2011April 15.

Fourth, the internship content:

1, subgrade and pavement characteristics and construction technology;

2. Engineering quality control;

3, engineering testing standards.

The short graduation internship will soon be over. Through this internship, I have a deeper understanding of the knowledge of our road and bridge major, and have a correct understanding of the problems and deficiencies existing in my previous study. The internship experience is summarized as follows:

The first is to have a deeper understanding of professional knowledge. Subgrade engineering construction has the following characteristics: 1. The length of the construction site is narrow; 2. There are many earthwork projects with uneven distribution along the line; 3. There are many subgrade projects, which restrict each other; 4. It is greatly influenced by the region; 5. There are many interference factors in the construction. Before the construction of subgrade engineering, detailed investigation must be made, reasonable arrangement and unified deployment must be made, appropriate filling materials should be selected, advanced construction technology and mechanical equipment should be adopted, and the construction should be carefully organized and scientifically managed to achieve rapid, efficient and safe construction, thus effectively ensuring the construction quality of subgrade engineering. Mainly reflected in the following aspects:

(1) Quality Control of Rock-filled Subgrade and Earth-rock Mixed Subgrade

1. Compactness control index of soil foundation-compactness

The so-called compaction degree of soil foundation is the ratio of the dry density measured after the actual compaction of soil on site to the maximum dry density measured by indoor standard compaction test. The commonly used methods to detect the degree of compaction are: sand filling method, water filling (water bag) method, ring knife method, nuclear densimeter method and so on.

2. Control of subgrade deflection value

Subgrade deflection value is the vertical rebound deformation value of subgrade measured in the most unfavorable season under the action of standard axle load, and it is an intuitive and simple index reflecting the overall strength and stiffness of subgrade.

(2), the requirements and types of pavement base cushion.

1. Pavement base. It mainly bears the vertical force from its upper surface and diffuses it into the cushion or soil foundation, so that the stress transmitted to the cushion or soil foundation is limited within its allowable range. It has certain strength, rigidity and sufficient water stability.

2. Subbase. It bears the repeated action of wheel load together with the surface layer and base layer, and plays a secondary bearing role.

3. Cushion. It is used to improve the humidity and temperature conditions of soil foundation, and has the functions of water isolation, drainage, heat preservation, load transfer and load diffusion.

Secondly, asphalt pavement construction can be divided into permeable layer, adhesive layer and seal layer construction.

1) primer construction

Technical points: 1. All kinds of asphalt pavement base must be sprayed with prime asphalt, which completely penetrates into the base, and the asphalt surface can only be paved after the surface is dry. When the lower seal coat is set on the base, the prime coat asphalt should be sprayed. 2. Spraying time of prime asphalt. Prime asphalt should be carried out after the construction of the base is over and the surface of the base is slightly dry. 3. Climatic conditions. When spraying prime asphalt, the surface temperature of base course shall not be lower than 10℃. When the strong wind affects the spraying effect or it is about to rain, check the spraying conditions before spraying the prime asphalt. 4. After spraying prime asphalt at the grass-roots level, vehicles should be prohibited from passing through until the prime asphalt is dry, so as to prevent pedestrians and vehicles from damaging the prime asphalt.

2) Construction of adhesive layer

Technical points: Before the construction of the bonding layer, clean the lower surface and keep it clean. When the construction site temperature is lower than 10 degrees Celsius or the bottom surface is wet, viscous asphalt shall not be sprayed. The asphalt of bonding layer should be sprayed by asphalt distributor, and the appropriate nozzle, spraying speed and spraying amount should be selected. Where spraying is impossible, technicians should operate and spray the cloth evenly to ensure that there is asphalt on the bonding surface. After spraying the adhesive layer, transport vehicles and other vehicles and pedestrians are forbidden to pass, and the upper asphalt is paved as soon as possible after the adhesive layer asphalt is slightly dry. If emulsified asphalt is used in the bonding layer, demulsification, initial setting and curing should be carried out, or the diluent in the diluted asphalt is basically volatilized.

Asphalt surface layer can be paved to ensure that the adhesive layer is not polluted.

3) Seal coat construction

The upper seal coat shall be laid under the following conditions: 1. Surface asphalt has large porosity and serious water permeability; 2. Cracked or repaired old asphalt pavement; 3. Old asphalt pavement that needs to be paved with wear-resistant layer to improve anti-skid performance; 4. New asphalt pavement that needs to be paved with wear-resistant layer.

The lower seal coat shall be laid under the following conditions: 1. Located in a rainy area, the asphalt surface has a large gap and serious water seepage; 2. After paving the base, the asphalt surface can't be paved in time, so the traffic must be opened.

Key points of seal coat construction: the seal coat can be a single-layer asphalt surface treatment layer by mixing method or layering method, and it can also be sealed by emulsified asphalt slurry. Before the seal coat construction, the surface of the base should be cleaned to ensure that there is no dust on the surface of the base to avoid the distortion of the seal coat oil film. During the construction of emulsified asphalt slurry layer, the following procedures should be followed: 1. When the surface of the base is slightly dry, emulsified asphalt is paved, and asphalt particles penetrate into the base with water due to hydrophilicity; 2. Spreading aggregate: properly soak emulsified asphalt, and spread aggregate before demulsification; 3. After the aggregate is spread for a period of time, it will be rolled by a 6~8t roller, and the rolling speed will not exceed 2km/h at the beginning.

4) Asphalt surface treatment construction

Asphalt surface treatment usually adopts layered paving method, which refers to the pavement construction method of paving, paving and compacting aggregate and binder in layers. According to the number of layers of paving asphalt and mineral aggregate, asphalt surface treatment can be divided into three types: single layer, double layer and three layer. The so-called "oil before material" method generally adopts layered paving method for asphalt surface treatment construction, that is, paving a layer of asphalt first and then paving a layer of mineral aggregate. The following will introduce in detail the various working procedures and construction points of the three-layer type.

1. Clean the base.

Before the construction of surface treatment layer, the pavement base should be cleaned to expose most mineral materials at the base and keep dry. The bumpy road section should be repaired first to make it smooth. If the overall strength of the foundation is insufficient, it should be strengthened first.

Dumping asphalt

The first layer of asphalt shall be poured according to the required quantity after the foundation surface of permeable asphalt has been replenished or cleared and opened to traffic. Paving asphalt shall meet the following requirements: 1. The pouring temperature of asphalt should be selected according to the construction temperature and asphalt grade. The paving temperature of petroleum asphalt should be 130℃ ~ 170℃, coal asphalt should be 80℃ ~ 120℃, and emulsified asphalt can be paved at room temperature. 2. The pouring length of asphalt should be coordinated with the capacity of the aggregate spreader to avoid waiting for a long time before spreading aggregate after asphalt pouring; 3. Asphalt should be spread evenly. When there is blank or missing edge in pouring, it should be supplemented by manpower immediately. If there is accumulation, it should be scraped off to avoid diseases such as loose or crowded output in the future; 4. Exposed parts of road artificial structures, various manhole covers, side flat stones, kerbs, etc. during oil spill. And sidewalk pavement, etc. , pollution should be fortified.

Step 3: Scroll.

Rolling shall meet the following requirements: 1. After paving a section of aggregate (don't wait for the whole section to be paved), immediately roll it with a 6~8t steel cylinder double-wheel roller, with each wheel track overlapping 300mm, and gradually roll it from both sides of the road to the middle of the road for 3~4 times. The rolling speed should not exceed 2km/h at first, and can be increased appropriately in the future. 2. The construction methods and requirements of the second and third floors should be the same as those of the first floor, but 8~ 10t roller can be used. When emulsified asphalt is used, the second layer of crushed stone with the specification of s 12(5~ 10mm) can be used as sealing material, and then a layer of sealing material with the specification of s 14(3~5mm) can be added, and the aggregate consumption is (3.5 ~ 5.5) m3//kloc.

3. Traffic control

Asphalt surface treatment can be opened to traffic after rolling acceptance. However, in the early days of opening to traffic, special personnel should be assigned to direct traffic or set up roadblocks to control the driving route of vehicles.

4. Initial maintenance

Initial maintenance should be carried out after asphalt surface treatment construction. When oil stain is found, caulking materials should be added to the oil stain. The caulking materials have the same specifications as the last layer of stone and should be swept evenly. When there are too many floating aggregates, the pavement should be cleaned, and the aggregates that have stuck in place should not be distinguished. If there are other damages, they should also be repaired in time.

5 asphalt pavement quality inspection:

Table 1. 1 Construction Quality Inspection Standard for Asphalt Surface Treatment Pavement

One-month internship, experiencing fresh excitement at first, giving up halfway and sticking to the end. The cold construction site not only tested my physical quality, but also tested my spirit and thought, and exercised my hard work and perseverance. What I have learned here is not only the scientific knowledge of building technology, but also the humanistic and social knowledge of dealing with people.

One month's internship gave me a preliminary understanding of philosophy on the road of life. First, we must have strong willpower. Second, we must have a strong desire for success. Third, we must have firm self-confidence. Keep a low profile. As long as you fully believe in yourself, you are diligent, thoughtful and open-minded, and you constantly improve yourself and improve yourself, the road to success will always cheer you up. Fourth, we should have a good team atmosphere. Environment shapes people, and times cultivate people. As long as you firmly establish the spirit of keeping pace with the times and make unremitting pursuit and exploration for your career, honor and personal value, a brilliant tomorrow will always be waiting for you.

Summary of Road and Bridge Practice Fan Wensan:

Time flies, the one-year internship has ended. Recall the excitement when I first entered the society.

I feel so naive about my love and infinite longing for the future. Through this year's internship, I have further improved my professional knowledge and ability to adapt to society, and my thoughts are more mature.

This internship, I mainly engaged in road test and detection in the field laboratory. The main projects are the reconstruction project of Huang Wei Highway in Ningxiang County and the No.1 12 bid section of Changshaolou expressway. From the moment I left the campus, I knew that no matter what I did, I should start from the grassroots and move forward step by step. As a member of the road and bridge industry, you should understand that the working environment is not so superior. If you really want to learn knowledge, you should

It should be bitter. Go deep into the site to practice the theoretical knowledge in books. Only through experience and exploration can those construction techniques and testing knowledge be deeply rooted. I will really learn knowledge and make continuous progress.

Through this internship, I have a deeper understanding of our professional knowledge of roads and bridges. After two years' study of specialized basic courses and specialized courses, the university has gradually acquired solid professional knowledge, but what it has learned during the school period is theoretical knowledge, which is far from enough for the study and application of theoretical knowledge in practice. At the same time, I have a correct understanding of the problems and shortcomings in my previous study and practice. When I came out of college and took a new job, I was faced with a blank sheet of paper. Everything is new, and everything is waiting for us to work hard. So in the face of so many colleagues who have been engaged in road and bridge engineering for a long time. Their work experience is richer and their knowledge is more solid than ours. Only by consulting them patiently and learning with an open mind can we make greater progress. We will make such efforts and enrich in road and bridge projects.

Challenges in the field of work have made greater gains. I also learned a lot of things that I couldn't learn in class, as if I had matured at once, understood the truth of dealing with people, understood the significance of learning, the preciousness of time and the true meaning of life. I understand that people's life can't be smooth sailing, as long as they bravely face every post station in life! This makes me clearly feel the heavy responsibility on my shoulders and see the direction of life. It also made me realize that laboratory work should have a careful and serious attitude, a peaceful mind and a spirit of not being ashamed to ask questions. No matter what happens, I will think carefully, listen to other people's suggestions, don't be too impatient and be responsible for what I do. The unit has cultivated my practical ability, increased my practical experience, made a new start for the actual laboratory work, and also accumulated better experience for our future work. I know that work is a passionate undertaking, and we should have the spirit of perseverance and hard work. I think the most important thing about this internship is that I really integrated into the society for the first time, learned about the society in practice and mastered some interpersonal skills. And during this period, I paid attention to how the seniors interacted with their superiors and how to deal with the relationship between the construction party, the supervisor and the owner. Taking advantage of this rare opportunity has also broadened our horizons, increased our knowledge, and laid a solid foundation for us to further move towards society in the future.

During my internship, I have never been absent for no reason. I am diligent and studious, modest and prudent, and listen carefully to the guidance of my predecessors. Listen to other people's suggestions with an open mind, be able to observe carefully, experience personally, think independently and analyze comprehensively. I try my best to apply what I have learned in school to practical work, and try my best to combine theory with practice, which has cultivated my persistent professionalism and diligent and practical work style, as well as my patience and quality. Able to obey orders, get along well with colleagues, respect leaders, be serious and responsible, and be able to complete tasks with good quality and quantity. Looking back on this period, my work is not satisfactory. I have thought that experience is naturally a factor, but more importantly, the change of mentality has not been achieved. It should be timely to find this deficiency now! Because I know what work is. In the following days, I will work hard in this direction, and I believe I can erase these shortcomings. During my internship, I benefited a lot from the guidance and help of my colleagues and leaders. The following is my internship experience:

Professional and technical aspects: about the early curing of concrete, practice has proved that common cracks in concrete.

Most of them are surface cracks with different shades. The main reason is that the temperature gradient leads to the sudden drop of temperature in cold areas, which is easy to form cracks. Therefore, the thermal insulation of concrete is particularly important to prevent early cracks on the surface. Starting from the temperature stress, thermal insulation shall meet the following requirements:

1. Prevent the temperature difference between the inside and outside of concrete and the slope of concrete surface, and prevent surface cracks.

2. In order to prevent concrete from freezing, we should try our best to make the lowest temperature of concrete during the construction period not lower than the stable temperature during the use period.

In dealing with people: first of all, be sincere. You can disguise your face and your heart, but never.

Ignore the power of sincerity. On the first day of internship at the construction site, it is inevitable that there are some doubts. I don't know what the master is like, how to do it, what to do and so on. Stepping into the laboratory office, I saw several strange faces looking at me with puzzled eyes. I greeted them with a smile, and the embarrassing situation was immediately alleviated. I think there are often some subtle things that are easily overlooked by us, such as a gentle greeting, which expresses respect and concern for colleagues and friends and makes others feel valued and concerned. In just a few days, I became one with my colleagues and communicated well. The second is communication. In order to learn as much as possible in the short internship, it is necessary to have good communication with colleagues and deepen mutual understanding. When you first arrive at the laboratory, the director doesn't know your work and learning ability, what you will do and what kind of knowledge you want to know, so you should establish good communication with the director. At the same time, I think this is also our future.

An indispensable key to society. Through communication and understanding, my colleagues have a general understanding of me, teaching me some practical knowledge of testers and giving me more guidance and help according to my interests. In this internship, I really learned knowledge that is not in the textbook. With practical experience, I really reflected the value of knowledge-applying what I have learned. Finally, take the initiative. When you have a choice, the initiative is in your own hands. When I am in the laboratory, I will take the initiative to clean up, help the master do something that I can, and take the initiative to find the right time.

Ask a question to a master. My master and I communicate like friends, talking about life, learning and future work. Through these, I am closer to my master. During the internship, the master will be more willing to guide me and let me gain more. Sometimes I will volunteer and go to the construction site to do experiments alone. I feel in my heart

I feel very happy, because of my initiative, I consolidated what I have learned and got the recognition of my master.

The short internship dust settled, and I successfully completed the internship task. Although internship

It's over, but my heart is still heavy. Here, I would like to thank the school and the internship unit for providing me with this internship opportunity, and also thank the teachers and colleagues for their guidance and help. I fully understand the importance of combining practice with theoretical knowledge. There is still a long way ahead, and I will continue to work hard to create a better tomorrow.

Summary of Road and Bridge Practice Model essay 3 Related articles:

★ Summary of practical experience of road and bridge

★ Practical experience of road and bridge

★ Model essay on practice report of roads and bridges

★ Three experiences in bridge cognitive practice

★ Summary of road and bridge practice

★ Practical experience of road and bridge (2)

★ Practical experience of road and bridge

★ Practical experience of road and bridge

★ Model essay on road and bridge practice report (2)

★ Five selected model essays of bridge engineering practice report.