This was the scene when the office of the safety committee of the State Council made an open and secret visit to the construction site of Hailan Yipin project in Lingao County, Hainan Province on the afternoon of November 23.
Anchor fixing of wind rope on tower.
In addition, experts found that the project also has some problems, such as inadequate protective measures for high-altitude operation platform, and the circuit connection of switch box does not meet the temporary power consumption specifications.
Experts found that the erection of the protective shed of the ground entrance channel of the building did not meet the specification requirements.
In addition, where embedded bolts should have been used for fixation, individual steel columns on site were rashly fixed by welding when the bolt fastening degree was not in place.
“The building is 27 storeys high.
The list of problems shows that some construction sites have problems such as expired fire extinguishers, not equipped with fire extinguishers, non-compliance with power consumption specifications, etc..
In order to urge all localities to effectively strengthen the prevention of major safety risks in key industries such as mines, dangerous chemicals and road transportation, and comprehensively investigate and rectify all kinds of hidden dangers of accidents, the Safety Commission Office of the State Council recently sent nine open and secret investigation teams to conduct open and secret visits in two rounds.
“You use single-layer plywood on it, which doesn’t meet the requirements.
“The specific data are in the scheme.
Beijing News reporter followed the investigation team to many places in Hainan and found that some projects had problems such as inadequate on-site management and many potential fire and safety hazards.
After the completion of the project, it will become an important place for Qionghai to hold large-scale concerts, concerts, sports competitions and other activities.
On November 26, The open investigation and unannounced visit team inspected the construction project in the area of Qionghai culture and Sports Center – phase I of culture and sports section (stadiums, gymnasiums and outdoor supporting projects), it was found that there were major potential safety hazards in the steel structure support tower of the project.
The on-site construction management personnel “ask one question and don’t know three things”.
At present, the bottom works have been basically completed.
The welding disc in the supporting tower has eccentricity.
After inspection by experts, The steel structure support tower foundation, column alignment and connection of the stadium (gymnasium) do not meet the requirements.
However, he still failed to make clear the initial tension value and working tension value of the wind rope.
On the same day, Qionghai Municipal Bureau of housing and urban rural development issued a notice on rectification of potential safety hazards to the construction unit.
The construction project in Qionghai culture and Sports Center – the construction site of phase I of culture and sports section.
If they don’t know the situation of the construction site and the tension value of the cable wind rope, they will bury the hidden danger of safety production.” Members of the investigation team explained to reporters.
The other party replied, “as long as the tower can be pulled to prevent the tower from toppling.” “How to ensure that the cable wind rope is in place? What is the standard?” Experts continue to ask.
Once dumped, the consequences will be unimaginable.
During the inspection, the team also found that the welding disc in the support tower was eccentric; The center of the tower steel column is misaligned with the I-beam of the lower bearing column base; Half of the I-beam at the base of the steel column of a tower is in a suspended state, which has a great potential of dumping and overturning.
In the process of following the open and secret investigation of the working group, the reporter found that fire safety is also a key issue inspected by the Safety Committee Office of the State Council.
Photo provided by the interviewee “The next key step is the installation of the steel structure.
In addition to supporting the tower, there are also problems in the fixation of the ground anchor of the cable wind rope on the tower.
Among them, the ninth working group conducted open and secret visits to the construction safety of tunnels, bridges and other buildings in Hainan Province from November 22 to November 26.
What is the role of the steel structure support tower? The reporter learned that the stadium (the pavilion) is divided into a concrete structure at the bottom and a petal shaped steel structure at the top.
“Can the bolt be welded? The solder joint is easy to open and the strength will be greatly reduced.” The experts of the investigation team pointed out the problems on the spot.
Aerial view of the construction project in the area of Qionghai cultural and Sports Center – phase I of the cultural and sports plate.
The steel structure support tower plays a supporting role in lifting and connecting the top steel structure, and all of them will be removed after the steel structure construction is completed.
For a building of this height, the top layer of the protective shed under it must be at least 5cm thick wood.” The expert of the unannounced visit group said to the on-site management.
“Grasping the safety problem is actually grasping the safe production and operation habit”.
Members of the investigation team told reporters that during the construction process, each support tower has to bear dozens of tons of steel structure weight.
Among them, the first phase of the sports sector includes stadiums, gymnasiums and outdoor supporting projects, with a total investment of about 1.7 billion yuan.
In Qionghai City, the unannounced visit team also found that there were major potential safety hazards in key projects in the province.
In addition, experts also found that there were problems on the construction site, such as disorderly stacking of temporary warehouse materials, storage of flammable materials such as paint but not equipped with fire extinguishers, and unstable support of local steel pipes.
The ceiling of the ground entrance channel should take double-layer protective measures, and the top layer should be made of wood board with a thickness of 5 cm or materials with equivalent strength.” The erection of the protective shed at the ground entrance passage of a building on the construction site of Hailan Yipin project does not meet the requirements.
In Figure 1, half of the I-beam of the steel column base of the tower is suspended.
If the foundation of the supporting tower below is unstable and the bearing capacity is insufficient, it is very likely to cause the collapse of the steel structure.” The expert explained.
“Managers are the key minority.
The bolt holes on the steel anchor plate are processed with welding rods, and the hole diameter is too large, which is easy to pull off after stress.
At the same time, the experts asked whether the two wind cables on the tower are spliced and fixed on the same ground anchor at the same time, which meets the stress requirements? “How does the wind rope work?” The expert of the unannounced visit group asked the deputy manager of the project site.
According to the public data provided by the respondents, the construction project in Qionghai culture and sports center covers an area of 606.55 mu, including Culture and sports, education and five networks infrastructure.
It provides information about how large the steel wire rope we need and what the angle is.” The deputy project site manager replied.
The steel structure supporting tower foundation is unstable, which is a major potential safety hazard.
