On March 16, is located in the Jingan district, Shanghai daning jinmao mansion under construction site collapse.
On March 16, a construction site collapse in Shanghai.
Landslide located in Shanghai's Jing an district of Peng Jiang ping XING pass road daning jinmao mansion under construction site. The night of the incident at about 8 o'clock, surging construction third Bureau official told News (www.thepaper.CN) journalist, collapse accident caused no casualties, is to backfill the collapse now.
That night, the Jingan district Party Committee propaganda Department issued pit collapse accident reports, at present, the on-site emergency teams and supplies are in place, the monitoring of Foundation pit and its surrounding roads, pipelines data updated every hour. City and district departments organized by the Group of experts has also arrived at the scene, on the analysis of the cause of the accident is under way.
The scene: the pavement outside the construction site collapse in 70 m
According to build three Bureau officials said at noon that day at 11 o'clock, contractors found the site fence trees suddenly tilted, evacuate immediately organized the construction site workers, professional monitoring company personnel on site to monitor. For fear of personnel close to the scene of a dangerous, the construction immediately sealed off the scene, while Jing ' an district notified police, security, traffic management and related functions. Police officers arrived at the channel unilateral blockade pingxing pass road north to South. At 4 o'clock in the afternoon, during settlement. At 5 o'clock in the afternoon, construction has set up a special working group with relevant departments, and discuss urgent solutions, preliminary to backfill, stability of pit to avoid secondary disasters. At present, the construction has mobilized nearly 20 vehicles dump truck 24-hour earth fill.
Three Bureau officials at the scene said, the project is in the construction phase, complete all construction procedures. In the course of excavation, Foundation pit monitoring data have been normal, local support deformation in the afternoon, and now experts are analyzing the cause. Emergency treatment and avoid the situation.
Near the site of the incident between non-roadway and sidewalk cracks, crack the 3 finger widths.
A construction worker told journalists said the surging, landslides occurred at around 3 o'clock in the afternoon, was on the ground about 5 meters deep job, suddenly broke top party posts, after the collapse, flooded out into the field. He estimated that landslides were more than 200 square meters.
Site built three disclosed through field exploration, the sidewalk outside the construction site collapsed about 70 meters long, about 3 meters wide, about 5 meters deep. And sidewalk are only separated by a billboard of Foundation pit collapse, subsidence of Foundation pit collapse led to the sidewalk.
Shanghai water company official said daningjinmao House occurs when the construction of the deep Foundation pit of under construction site collapsed, causing the surface to sink, making a 300mm hose is damaged, but luckily, the pipeline has not been put into normal use. Valve has now been shut down. Community before occupancy, without affecting the surrounding population water supply.
Journalists on the scene saw the surging, cave-in site, located north of the site, landslide road outside the walls cracked, landslide pingxing pass north of the road closure implemented near the site, only earth-moving trucks constantly came in and out. Site built three Bureau officials said road closures in order to avoid a second collapse.
In addition, hung on the walls of the site of the incident a "municipal site created signs of civilization", which displays the site's construction unit for home buyers (Shanghai) limited, construction of flats for the first out of three construction Corporation.
Landslide site as Ning Jin Mao mansion nearby. Field said a daning jinmao mansion owners on the West side, immediately after the news arrived on the scene, he would wish to have professionals on the Community Foundation has made a professional assessment, or has an impact on the surrounding community, don't feel comfortable staying.
According to media reports the incident surrounding the site property for the current price is 90000/square meters, daningjinmao House the latest issue has not been opened.
Expert: many reasons can lead to landslides
According to the experts, causes deformation of excavation and General deformation of the retaining structure, basement of rebound and uplift, the precipitation caused by consolidation in the field, and so on. After the Foundation pit enclosure structure formed, with the digging of Foundation pit soil addition, support structure in the dorsal lateral earth pressure and deformation of support under the action of axial force, led wall displacement of soil, causing surface deformation.
Experts also said that as the depth increases, increasing both the soil surface height difference, differential changes of load and stress increases, so retaining wall outside the shear strain, to the Foundation increased its sliding trend and momentum, and thus lead to or exacerbate the surrounding surface subsidence. As the Foundation continues pumping, pore-water pressure dissipation in soil, effective stress of soil in increasing roles under the new consolidation and compression deformation, on the ground could have a settlement and horizontal displacement.
Above experts also pointed out that, effect deep pit of design, and construction and management of factors than more, if management poor, regardless of is design, and construction also is management link appeared problem, are may led to pit excavation of process in the caused around surface settlement larger, even led to pit engineering of failed, "and specific to a a engineering appeared pit deformation even collapsed of situation, reasons also to combined site of specific situation to analysis. "
Attachment: 325 Street neighborhood block residential project, on Ning Road (East) report on the collapse accident of Foundation pit Shanghai boy million full scholarships admission
325, Daling road, Jing an district, Shanghai Street neighborhood block housing projects (East) by one out of three the company General contractor, supervisor for British tech engineering consultants (Shanghai) limited, design of Foundation pit for Shanghai Shen Yuan Geotechnical Engineering Ltd, unit for home buyers (Shanghai) co., Ltd.
March 16, around 15 o'clock, in Foundation pit excavation process, the East side (Yan ping XING pass road) two crippling suddenly ruptured, triggering a walkway collapse pingxing pass road. Construction unit immediately shut down, evacuation, evacuation organization. Employer immediately called the construction unit, the engineer units, design units, monitoring of Foundation pit maintenance of units, units, field studies determine the emergency plan immediately fill to prevent danger to further expand. Relevant government authorities in response to the report, immediately to the scene to organize emergency. Construction sector-led command personnel evacuation and rescue work; closed pingxing pass road traffic Department, establish cordon municipal sector organizations on the surrounding pipes out thoroughly established pipeline detection points. At present, the on-site emergency teams and supplies are in place, backfill and rescue work is continuing, monitoring of Foundation pit and the surrounding roads, pipelines data updated every hour, ensuring the Elimination of danger as soon as possible, restoring traffic to avoid secondary disasters. City and district departments organized by the Group of experts has also arrived at the scene, on the analysis of the cause of the accident is under way.
Jing ' an district Party Committee propaganda Department
The March 16, 2016
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