Network of Guangxi Department of housing and urban rural development: increase the investigation and supervision of potential safety hazards of housing construction and municipal engineering, focus on the investigation of construction safety hazards such as high formwork support, wood formwork support and simultaneous pouring of beam, slab, wall and column concrete in construction engineering, and strictly investigate the preparation, review and approval procedures of special construction schemes.
The project manager failed to perform his duties, and there was illegal subcontracting in the project.
42), it is pointed out that the current construction technology of simultaneous pouring of beam, slab, wall and column concrete has serious defects in the erection method and reinforcement measures of formwork support system in the process of practical application.
The construction manager will take you to review and analyze the accident: the second time after the accident in Nanning Day, the Department of housing and urban rural development of Guangxi autonomous region made an emergency deployment, requiring all parts of the region to focus on investigating potential construction safety hazards, including “simultaneous pouring of beam, slab, wall and column concrete”.
carry out self inspection and self correction immediately..
The accident is regarded as learning a lesson.
According to the preliminary investigation, when the accident occurred, the construction unit had no management personnel on the site or on-site supervisors, and the construction unit did not comply with the construction process procedures.
(the full text is attached at the end of the article) to hold the project manager responsible for an accident.
The accident caused by the simultaneous pouring of beams, plates and columns is not an exception.
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The original text is as follows: not long ago, in the construction of individual projects in our area, the construction technology of pouring beam, plate, wall and column concrete at the same time was adopted, and the formwork support system overturned, resulting in mass casualties and serious consequences.
If wood support is used, the material must meet the requirements.
In 2014, a collapse accident occurred in Guilin, resulting in 5 deaths and 2 injuries.
The relevant requirements are hereby notified as follows: first, the construction process of simultaneous pouring of beam slab wall column concrete is strictly limited.
In December 2, 2021, the Guangxi Housing Office issued an administrative penalty decision.
Guangxi has issued a document strictly restricting the simultaneous pouring of beam, slab, wall and column concrete! In order to seriously learn from the tragic lessons of the “May 13” accident in Lingui, in June 2014, The Department of housing and urban rural development of Guangxi issued the notice on strictly limiting the construction process of simultaneous pouring of beam, slab, wall and column concrete (gjg [2014] No.
When this process is really necessary due to engineering conditions, a special construction scheme must be prepared and experts must be organized to demonstrate.
The beam, slab and column concrete were poured at the same time, resulting in the collapse of the staircase roof to the ground of the first floor.
On May 30, 2019, a collapse accident occurred during the construction of Juren village cultural activity center project in Nanning Economic Development Zone, resulting in 3 deaths and 4 injuries.
In order to seriously learn from the tragic lessons of the “May 13” accident in Lingui, our office has decided to strictly limit the construction process of simultaneous pouring of beam, slab, wall and column concrete in the construction of housing construction projects in the whole region since the date of issuance of this notice.
In view of the current actual situation in our area, in principle, the construction technology of simultaneous pouring of beam, slab, wall and column concrete shall not be used in the housing construction projects constructed in our area.
In order to further strengthen the construction safety management of formwork support system, our office organized experts to conduct technical analysis and demonstration, and considered that the current construction technology of simultaneous pouring of beam, slab, wall and column concrete has serious defects in the erection method and reinforcement measures of formwork support system in the process of practical application.
According to the preliminary investigation, the cause of the accident is that the design unit did not indicate the key parts involving high-risk divisional and subdivisional works in the design documents, the construction unit did not set up the on-site formwork frame according to the specifications, did not prepare the high formwork erection, and there was no special construction scheme, resulting in insufficient tail diameter of wood support, extension and serious lack of horizontal tie in the construction, During the construction, the safety hazards such as the connection between the formwork support and the outer frame, coupled with the wrong construction method of pouring beams, plates and columns at the same time, directly led to the instability and collapse during the pouring of roof concrete.
The competent departments of housing and urban rural development at all levels in the region The construction supervision enterprise must strictly implement the standard specifications including the technical code for safety of steel pipe support structure of building construction formwork and operation platform (db45 / t618-2009).
The same reason is that the concrete of beams, plates and columns is poured at the same time.
Punishment: revoke your qualification certificate of secondary constructor for 5 years No registration within the; At the same time, your work safety assessment certificate will be revoked.
According to the previous investigation report, the head of the project labor team, Legal representative of construction unit (General Manager) has been released on bail pending trial; the actual person in charge of the construction site and the actual supervisor of the construction site have been approved to arrest and file a public prosecution; the actual contractor of the project and the actual contractor of supervision business are considered to have unclear facts and insufficient evidence, so they make a decision not to approve the arrest.
III.
When this process is really necessary due to engineering conditions, a special construction scheme must be prepared and experts must be organized to demonstrate.
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When the height of the frame exceeds 3.6m, it is prohibited to use wood to erect formwork support.
In principle, the construction technology of simultaneous pouring of beam, slab, wall and column concrete shall not be adopted for the house construction works constructed in our area.
According to the preliminary investigation by the Department of housing and urban rural development of the autonomous region, in addition to the potential safety hazards in formwork erection, another problem leading to collapse is that beams, plates and columns are poured at the same time.
on May 13, 2014, the public rental housing project in Liutang Town, Lingui County, Guilin City (with a construction area of 2538 m2, a project cost of 3.8 million yuan, a five storey frame structure and a staircase on both sides of the gable) collapsed during the concrete pouring construction of the roof of one staircase, resulting in 5 deaths and 2 serious injuries.
At about 8:15 a.m.
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2、 The use range of wood formwork support shall be strictly limited.