How to do well the supervision and control of the project behind the subway station

First, the characteristics of the subway project

As a convenient tool for urban residents to travel, subway is playing an increasingly important role. At present, nearly 30 cities in China are building or preparing to build subways. It mainly has the following characteristics: land saving, noise reduction, energy saving and pollution reduction, which conforms to the national energy saving and emission reduction policy. But at the same time, there are also some shortcomings, such as high construction cost, long construction period, complex construction procedures, diverse structural forms and high construction risks.

Second, the characteristics of subway construction industry data

Office data is an important carrier that directly reflects the quality control of the construction process, and it is also an important basis for the management of subway completion acceptance and opening to traffic in the future. Strengthening and standardizing the arrangement of office data in the construction stage is an important content of current subway construction management, and it is also the main aspect reflecting the construction management level of subway projects.

1, building technical data is one of the foundations of urban construction and management. After the completion acceptance and delivery of the construction unit for a certain period of time, some quality defects are likely to appear in the project due to quality hidden dangers or ineffective rectification measures. In order to ensure the engineering quality and prolong the service life of the project, maintenance and reinforcement must be carried out. Therefore, it is necessary to consult the technical documents of the project in order to take appropriate and effective measures. Engineering technical planners and designers must know the structural form, route direction and plane layout of the project in detail in order to formulate correct schemes and measures, which can be obtained by consulting the technical data files of the project.

2. The construction technical data is an objective witness of the project quality. Quality is "the sum of characteristics and characteristics that reflect the ability of products or services to meet explicit or implicit needs". As far as subway engineering is concerned, a station, a section and a signal line should meet the functions and use value required by the building or communication, and should meet the design, specification requirements and quality standards stipulated in the contract. The process of engineering construction is the process of quality formation, and the engineering quality should be witnessed by corresponding technical data in the process of formation.

3, the construction technical data is a comprehensive embodiment of the management level of construction enterprises. The construction technical management data of the construction unit is transformed from the technical documents and data gradually formed in the construction process. It is as important as completing the main body of the project and is a part of the project contract. It is an important document that comprehensively reflects and records the main body of the building unit and the construction process. It is one of the direct achievements of the construction unit and plays a guiding and basic role in the construction. It represents the comprehensive management level of construction enterprises.

Subway engineering involves many specialties, including nearly twenty or thirty specialties such as structure, architecture, decoration, ventilation and air conditioning, water supply and drainage, fire protection, comprehensive monitoring, power supply, communication and civil air defense. Long time span, from feasibility study, project establishment, project planning, survey, design, bidding to construction, handover and acceptance, it takes at least 6 years; Involving a number of units, survey, professional design, professional construction units and supervision units; There are many construction contents, including underground, ground, elevated stations, bridges, houses, stations, tunnels and so on. Faced with so many majors, responsible units and construction projects, we should formulate unified standards, systems and procedures for data collation, and then refine them, so that a lot of data can finally be standardized, clear and easy to check.

Metro engineering data mainly include management data, technical data, quality control data, construction records, measurement, monitoring data, safety and function inspection data, main function sampling records, acceptance data and drawings, which are basically the same as general construction projects, but also cover some specific contents of municipal, railway, electric power and other professions.

Three, the requirements of the data processing in the industry

"Complete", "accurate" and "strict": "Complete" means trying to complete all the documents and materials in the office to avoid the phenomenon of lack of documents and insufficient frequency. "Accuracy" refers to strictly controlling the accuracy of industry information collation, so as to ensure the accuracy of the content and data to stand scrutiny and inspection. "Strict" means strictly checking the format and composition of office materials, and unqualified office materials are strictly prohibited from entering the engineering archives.

Fourth, the problems, causes and countermeasures in the current data sorting process.

In recent two years, some problems have been found in the acceptance of the completion data of Xi Metro Line 2, and the reasons for these problems have been considered. To sum up, the reason is very simple, that is, whether the leaders attach importance to it and whether the specific personnel are responsible. A considerable number of projects usually do not pay attention to the management of internal data, and there is a widespread phenomenon of "emphasizing the field work but neglecting the internal work". The arrangement of internal data is carried out in stages, and only "reorganization" is not "management", resulting in internal data being "full of logic and data errors"; In addition, the project manager and the file manager are unfamiliar with each other's business, with poor sense of responsibility, unstable jobs and poor continuity of work, which leads to repeated rework of office materials. Specifically reflects the following practical problems:

1, personnel issues.

The project manager has an incorrect idea about who will compile the data. Most people think that the information is just arranged for a person to sit in the room and fill out a form and print it out on the computer. Actually, it is not. I don't think information personnel should be behind closed doors. They should know the construction procedures, contents and progress, and should also be familiar with the site situation, otherwise the information made will have no credibility.

The data assembler is unstable and changes frequently. The time span of data collation is long and boring, and it is not as substantial as the entity, which has a great influence on personal promotion. Therefore, the technicians on the project are unwilling to do data work, which leads to frequent personnel turnover. To solve this problem, on the one hand, unit leaders need to improve the treatment of data compilers, on the other hand, they need to clarify their responsibilities. Data administrators are mainly responsible for data collection, sorting and archiving, rather than "manufacturing" data. First-hand data should be filled in by on-site technicians to ensure the timeliness and accuracy of data.

2. Problems in data filling.

2. 1 Data filling is inconsistent with the actual construction content on site. Some construction units did not carefully read or understand the contents involved in the inspection lot table, and filled in some items unrelated to the construction of this site. For example, in the current station structure construction, the main beam or secondary beam foundation is not bent with steel bars, but the information of a considerable number of units in this project is ticked in the form of steel bar installation inspection lot; In decoration engineering, the hook at the end of steel bar of constructional column or ring beam is also understood as bending steel bar.

2.2 The signatories are not uniform and the handwriting is inconsistent.

(1) The signatures of the same person in charge in various materials are inconsistent.

(2) The contents of information filled in by different responsible persons are consistent.

The frequent transfer of personnel in various projects is the main reason for this situation. On the other hand, the information is not submitted in time, and many a mickle makes a mickle, so it is too late to sign.

2.3 Self-inspection data, sampling data and test data do not correspond.

(1) The inspections in the self-inspection data were not filled in in the order of construction procedures. The time between steel bar inspection, formwork inspection and concrete pouring is discontinuous. The measured data and the process inspection data are inconsistent in time and date.

(2) For the same construction process, the data of self-inspection, sampling inspection and test do not correspond in time and content, so special attention should be paid to the date before concrete pouring and the date of making specimens.

2.4 The logical relationship between data can't stand scrutiny. For example, the drilling depth, the elevation of the bottom of the hole before drilling, the thickness of the sediment layer in the bored pile and the hole depth are filled in different tables at different detection stages, but there is a certain logical relationship, which should be calculated carefully; The data of elevation inspection, virtual paving thickness and compaction thickness inspection in subgrade filling form also have certain logical relationship.

2.5 fill in the content does not meet the requirements of drawings and specifications. The master control projects of each inspection lot must all be qualified, and the general project qualification rate should reach more than 80%. Find out whether the items in the table are quantitative indicators or qualitative indicators, whether to fill in the deviation value or tick, and fill in according to the site conditions and specification requirements. The data in the table comes from the construction site, but it should meet the design and specification requirements.

2.6 The order and types of templates shall be determined according to the working procedure of each subdivisional work. Under normal circumstances, every working procedure should be recorded and checked, and no item should be left out.

2.7 There are obvious errors, alterations and omissions in the data.

2.8 Fill in the handwriting. Especially the signature, you can often see the signature of some managers, which is unrecognizable.

The above problems are problems in specific data, which can be solved in three words: strict, precise and detailed. "Strict" is a strict and rigorous attitude. If you have a good attitude and a correct attitude from the beginning, you will have a good result. From the beginning, we should take the information in the industry seriously and don't hold the mentality of completing the task. "Fine" means mastering the knowledge in the industry, so that the information in the industry does not stay on the surface, with essence, spirit, accuracy and precision; "Fine" means careful, and details determine success or failure. Often some details will determine the success or failure of a thing, and details are also the most easily overlooked places. In the process of indoor management, details are particularly important, such as inconsistent pictures and texts, different words and scrawled handwriting. This can be said to be the most common problem in indoor finishing management, and it is these problems that lead to a lot of data rework and waste of manpower and material resources. Therefore, it will also be refined, and the information in the industry will be refined to be comprehensive.

Verb (abbreviation for verb) ideas and suggestions

1. The management of office data is a long-term, uninterrupted and regular sorting process. The data management and construction unit shall set up a special organization to arrange personnel to supervise, guide and inspect the data collation of various projects;

2, to ensure the authenticity and integrity of all kinds of technical data, truth is the soul, integrity is the guarantee.

3, should be involved in advance, completes the filing list, fill in the requirements;

4. Strengthen training and organize exchange and study among all units;

5. Strengthen the supervision function and strictly supervise the daily data requirements;

6. Communicate with the local archives management department, ask them to check together when necessary, and find and solve problems as soon as possible.

Through engineering practice, there are still some problems in the management of office data sorting and filing, which leads to the defects of incomplete, inconsistent and unsystematic office data. Subway project is a systematic project, involving many aspects. If the main person in charge of each unit can be rigorous, accurate and meticulous, I think the information management in the industry will be comprehensive, systematic and standardized, and will definitely leave a witness to the construction process.