Shanghai Rail Transit 12 Line Construction Accident

At about 20 12 65438+February 3 1 2 1, located in Jinsui Road, Pudong New Area, the ground maintenance warehouse of Jinqiao parking lot of rail transit12 line, which was built by Shanghai Construction Engineering Second Construction Group, collapsed during construction, resulting in 5 deaths and 18 injuries. The search and rescue work ended in the early morning of June 13+0 1.

On the night of 20 12, 12, 12, and 3 1, the pouring platform of the ground maintenance warehouse in Jinqiao parking lot collapsed, causing 5 deaths and 17 injuries. At the time of the incident, the maintenance warehouse was pouring concrete. According to the introduction of the Municipal Health Bureau, the seriously injured were 1 person, and the vital signs of the other wounded were stable. Another builder fainted due to emotional stress and was taken to hospital for treatment.

The metro maintenance depot is located near Jinsui Road, Jinhai Road, Pudong, with a length of about 120m, a width of about 60m and a height of about 10m. According to an on-site reinforcement worker, the maintenance garage is divided into four parts, which are built from south to north in turn, and about a quarter of the roof near the north collapses.

20 12, 12, 3 1 that night, the incident site was surrounded by a cordon. The bamboo on the scaffold is inclined from all sides to the middle, and many cement columns 1 m square stand on the ground. Through the lower scaffolding, you can see some concrete blocks and bamboo on the ground of the maintenance station. There is a concrete pump truck parked next to the maintenance garage, and its pump wall is pressed on the scaffold by the oblique yellow tower crane arm. The yellow tower crane arm bumped into the mud, and less than 3 meters away from it, it was the blue shed of the site material keeper and his wife.

The nurse recalled that his wife was already sleeping in the shed, and he was watching by the concrete pump truck. First, he heard something break. When he looked up, all the bamboo on the scaffold fell in the middle. Next, he heard a bang, the roof collapsed, the tower crane arm hit his shed, and then there was no sound. It all happened in a few seconds, the nurse said. At that time, he was too scared to walk, and he couldn't shout if he wanted to call his wife for her life.

Cai Jinhua, a worker who escaped from the accident, recalled that at that time, machines such as pump trucks roared, and he could not hear the precursor sound of roof collapse at all. He felt suddenly weightless and fell down, surrounded by steel plates and wet concrete. I didn't save myself until the rescuers arrived. The reporter learned that the winning bidder for garage construction is Shanghai No.2 Construction Co., Ltd.

Outside the warning line at the scene of the accident, the construction workers are still discussing. The day before yesterday was originally the final delivery date of the maintenance depot, and concrete pouring began that afternoon, which is expected to be completed in the evening. A total of about 1800 square meters of concrete, when the incident occurred, there were more than 200 square meters left on the pouring surface. In order to deliver the project on time, three concrete pump trucks operate at the same time, and the tower crane helps to transport concrete. Before pouring concrete, only 1 or two pump trucks were working.

A steel worker said that near the end of the year, workers need to go home for the New Year, and the handover date is approaching. The construction site has been rushing to work. It rained and snowed in Shanghai a few days ago. They worked overtime at night and their clothes were soaked.

A bricklayer who escaped the robbery analyzed that one cubic meter of concrete weighs more than 2 tons, and the weight of the whole roof can be imagined. In addition, the low temperature in Shanghai and the slow solidification of concrete may be the reasons for the roof collapse. The tower crane arm was pulled down after the roof collapsed.

After the incident, the city leaders immediately rushed to the scene to direct the rescue. Public security, safety supervision, fire control and other departments in Pudong New Area spared no effort to search and rescue the buried workers. The wounded were then sent to Shuguang Hospital and Gong Li Hospital for treatment, and the search and rescue work ended around 1 yesterday morning.

Five workers were killed and 17 workers were injured, most of which were fractures, soft tissue injuries and eye burns. Except for 1 patient with severe lumbar fracture, the rest of the wounded were moderate and mild, and all the wounded had stable vital signs. Among them, 1 minor injuries were discharged yesterday morning. Today, Shuguang Hospital will organize elite soldiers to operate on several fracture patients.

It is understood that another injured family member fainted after arriving at the scene and was also taken to hospital for treatment. There are defects in the construction and erection of formwork structure, which leads to the collapse of formwork in a large area.

20 12 At 3: 00 on February 3 1 2 1 03, the maintenance joint garage of Jinqiao parking lot on Shanghai Rail Transit 12 line collapsed during construction, resulting in 5 deaths, 7 serious injuries and 10 minor injuries, with a direct economic loss of about 7 million yuan. It was learned from Shanghai Safety Supervision Bureau yesterday that the cause of the accident was that the formwork structure was defective in construction and erection. Under the action of concrete weight and construction load, the formwork structure is partially unstable and eventually collapses.

Three concrete pump trucks are located in the east, west and north, respectively, and are pushed from far to near and from south to north as a whole, and the concrete in 1 area is poured in the order of pouring the lower half column of the frame first, then pouring the upper half column, beam and floor; Tower crane cooperates with material handling. At 20: 30, the tower crane driver left the scene after work. At 2 1: 03, the formwork collapsed in a large area.

Through on-the-spot investigation, the construction unit of the project, Shanghai Construction Engineering Second Construction Group Co., Ltd., the supervision unit, Shanghai Qiaopu Engineering Construction Management Co., Ltd. and the labor subcontracting unit, Shanghai Dongfu Construction Labor Service Co., Ltd., all have problems of inadequate management and responsibility.

After investigation, the Shanghai Municipal Administration of Work Safety determined that this was a production safety liability accident. The night before yesterday, Shen Jun, vice mayor, presided over a special meeting on the collapse accident of the 12 line under construction, and Shen Jun and his party visited the accident site in the morning.

The meeting requested relevant responsible units and competent departments to do a good job in rescue and aftermath, and make arrangements for cleaning up the accident site and investigating the cause of the accident in the next stage. It is required to adhere to a serious scientific attitude and a rigorous style of seeking truth from facts, adhere to the "four don't let go", find hidden dangers of accidents and learn from them, draw inferences from others, thoroughly investigate hidden dangers of accidents, and solidly promote the construction of major projects and safety production in the city.