A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pile-wall integrated prestressed cast-in-place pile construction method
The invention provides a pile-wall integrated prestressed cast-in-place pile construction method. The pile-wall integrated prestressed cast-in-place pile construction method comprises the following steps: deepened design of retard-bonded prestressed steel strands; constructing a waterproof curtain; forming holes in the prestressed cast-in-place pile; manufacturing a prestressed cast-in-place pile reinforcement cage; the retard-bonded prestressed steel strand is pre-buried; pre-burying the sounding pipe; hoisting a reinforcement cage; pouring concrete; chiseling away a concrete laitance section; and tensioning the prestressed steel strand. The construction is simple, the construction cost of the support pile is low, the integrated floor plate is combined to serve as a support, safety and reliability are achieved, when the pile-wall integrated cast-in-place pile support pile is constructed, the prestressed steel strand is pre-buried in the reinforcement cage, after the support pile is formed, the redundant laitance section of the support pile is chiseled away, prestress tensioning is conducted, and the pile-wall integrated cast-in-place pile support pile is constructed. Prestress is applied to the pile-wall integrated supporting pile through a post-tensioning method, the bearing capacity of the supporting pile is improved, deformation of a foundation pit and cracks generated by the supporting pile are reduced, and therefore the effect of optimizing reinforcement of the supporting pile is achieved, the durability of the pile-wall integrated supporting pile is improved, and certain economic benefits and application value are achieved.
本发明提供了一种桩墙合一预应力灌注桩施工方法，包括：缓粘结预应力钢绞线深化设计；止水帷幕施工；预应力灌注桩成孔；预应力灌注桩钢筋笼制作；缓粘结预应力钢绞线预埋；声测管预埋；钢筋笼吊装；混凝土灌注；混凝土浮浆段凿除；预应力钢绞线张拉。本发明施工简单，支护桩造价低，结合一体化楼层板作为支撑，安全可靠，在桩墙合一的灌注桩支护桩施工时，在钢筋笼里预埋预应力钢绞线，待支护桩成桩后，凿除支护桩多余浮浆段，进行预应力张拉，通过后张法给桩墙合一的支护桩施加预应力，提高了支护桩的承载力，减少基坑变形和支护桩产生裂缝，从而达到优化支护桩的配筋的作用，提高桩墙合一支护桩桩耐久性，具有一定的经济效益和应用价值。
Pile-wall integrated prestressed cast-in-place pile construction method
The invention provides a pile-wall integrated prestressed cast-in-place pile construction method. The pile-wall integrated prestressed cast-in-place pile construction method comprises the following steps: deepened design of retard-bonded prestressed steel strands; constructing a waterproof curtain; forming holes in the prestressed cast-in-place pile; manufacturing a prestressed cast-in-place pile reinforcement cage; the retard-bonded prestressed steel strand is pre-buried; pre-burying the sounding pipe; hoisting a reinforcement cage; pouring concrete; chiseling away a concrete laitance section; and tensioning the prestressed steel strand. The construction is simple, the construction cost of the support pile is low, the integrated floor plate is combined to serve as a support, safety and reliability are achieved, when the pile-wall integrated cast-in-place pile support pile is constructed, the prestressed steel strand is pre-buried in the reinforcement cage, after the support pile is formed, the redundant laitance section of the support pile is chiseled away, prestress tensioning is conducted, and the pile-wall integrated cast-in-place pile support pile is constructed. Prestress is applied to the pile-wall integrated supporting pile through a post-tensioning method, the bearing capacity of the supporting pile is improved, deformation of a foundation pit and cracks generated by the supporting pile are reduced, and therefore the effect of optimizing reinforcement of the supporting pile is achieved, the durability of the pile-wall integrated supporting pile is improved, and certain economic benefits and application value are achieved.
本发明提供了一种桩墙合一预应力灌注桩施工方法，包括：缓粘结预应力钢绞线深化设计；止水帷幕施工；预应力灌注桩成孔；预应力灌注桩钢筋笼制作；缓粘结预应力钢绞线预埋；声测管预埋；钢筋笼吊装；混凝土灌注；混凝土浮浆段凿除；预应力钢绞线张拉。本发明施工简单，支护桩造价低，结合一体化楼层板作为支撑，安全可靠，在桩墙合一的灌注桩支护桩施工时，在钢筋笼里预埋预应力钢绞线，待支护桩成桩后，凿除支护桩多余浮浆段，进行预应力张拉，通过后张法给桩墙合一的支护桩施加预应力，提高了支护桩的承载力，减少基坑变形和支护桩产生裂缝，从而达到优化支护桩的配筋的作用，提高桩墙合一支护桩桩耐久性，具有一定的经济效益和应用价值。
Pile-wall integrated prestressed cast-in-place pile construction method
一种桩墙合一预应力灌注桩施工方法
SUN YONGWANG (author) / LI DELIN (author) / MA HUAIZHANG (author) / JIANG LEI (author) / ZHAO ZHITAO (author) / WANG ZHENGFEI (author) / YANG FAN (author) / XU YIXUAN (author) / GUO XUDONG (author)
2024-08-30
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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