A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of underground prestressed supporting structure
The invention discloses a construction method of an underground prestressed supporting structure. The construction method comprises the following steps that (1), supporting piles carrying anchor cables are sunk; (2), a top horizontal support is constructed; (3), a foundation pit is excavated to a set depth for primary excavation, N enclosing purlins are installed in the range, and the anchor cables are tensioned to abut against the N enclosing purlins; (4), the foundation pit is excavated, the (N+1)th enclosing purlin is installed, and the anchor cables abut against the (N+1)th enclosing purlin; (5), all the enclosing purlins are installed, and a bottom plate is poured; (6), the enclosing purlins below the Kth layer of top plate are dismantled, and the Kth layer of top plate is constructed; (7), the enclosing purlins below the (K-1)th layer of top plate are dismantled, and the (K-1)th layer of top plate is constructed; (8), the construction of the top plate below the Nth enclosing purlin is completed; and (9), tensioning of the anchor cables is removed, and the top plate is constructed. According to the construction method, the enclosing purlins are adopted to replace supporting parts, the enclosing purlins serve as force transmission parts to form the prestressed supporting piles, so that the enclosing purlins and the supporting piles form a whole, and the integrity and stability of a foundation pit supporting system are guaranteed.
本发明公开了地下预应力支护结构的施工方法，步骤：(1)将携带有锚索的支护桩下沉；(2)施工顶部水平支撑；(3)开挖基坑到初次开挖设定深度，安装该范围内的N道围檩，对锚索进行张拉使其抵压在N道围檩上；(4)开挖基坑，安装第N+1道围檩，使锚索抵压在N+1道围檩上；(5)完成所有围檩的安装，浇注底板；(6)拆除第K层顶板以下的围檩，施工第K层顶板；(7)拆除第K‑1层顶板以下的围檩，施工第K‑1层顶板；(8)完成第N道围檩以下顶板的施工；(9)卸去对锚索的张拉，施工顶板。本申请采用围檩来替代支撑件，并将围檩作为传力件形成预应力支护桩，使围檩与支护桩形成为一个整体，保证了基坑支护系统的整体性和稳定性。
Construction method of underground prestressed supporting structure
The invention discloses a construction method of an underground prestressed supporting structure. The construction method comprises the following steps that (1), supporting piles carrying anchor cables are sunk; (2), a top horizontal support is constructed; (3), a foundation pit is excavated to a set depth for primary excavation, N enclosing purlins are installed in the range, and the anchor cables are tensioned to abut against the N enclosing purlins; (4), the foundation pit is excavated, the (N+1)th enclosing purlin is installed, and the anchor cables abut against the (N+1)th enclosing purlin; (5), all the enclosing purlins are installed, and a bottom plate is poured; (6), the enclosing purlins below the Kth layer of top plate are dismantled, and the Kth layer of top plate is constructed; (7), the enclosing purlins below the (K-1)th layer of top plate are dismantled, and the (K-1)th layer of top plate is constructed; (8), the construction of the top plate below the Nth enclosing purlin is completed; and (9), tensioning of the anchor cables is removed, and the top plate is constructed. According to the construction method, the enclosing purlins are adopted to replace supporting parts, the enclosing purlins serve as force transmission parts to form the prestressed supporting piles, so that the enclosing purlins and the supporting piles form a whole, and the integrity and stability of a foundation pit supporting system are guaranteed.
本发明公开了地下预应力支护结构的施工方法，步骤：(1)将携带有锚索的支护桩下沉；(2)施工顶部水平支撑；(3)开挖基坑到初次开挖设定深度，安装该范围内的N道围檩，对锚索进行张拉使其抵压在N道围檩上；(4)开挖基坑，安装第N+1道围檩，使锚索抵压在N+1道围檩上；(5)完成所有围檩的安装，浇注底板；(6)拆除第K层顶板以下的围檩，施工第K层顶板；(7)拆除第K‑1层顶板以下的围檩，施工第K‑1层顶板；(8)完成第N道围檩以下顶板的施工；(9)卸去对锚索的张拉，施工顶板。本申请采用围檩来替代支撑件，并将围檩作为传力件形成预应力支护桩，使围檩与支护桩形成为一个整体，保证了基坑支护系统的整体性和稳定性。
Construction method of underground prestressed supporting structure
一种地下预应力支护结构的施工方法
WANG TAO (author) / LI RENMIN (author) / WANG JIANLAN (author)
2020-07-28
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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