A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ultra-deep foundation pit supporting structure and construction method thereof
The invention provides an ultra-deep foundation pit supporting structure and a construction method thereof. The ultra-deep foundation pit supporting structure comprises an enclosure wall body and a plurality of supports. The enclosure wall body comprises a reinforced concrete wall body and a vertical recoverable pre-stressed anchor cable embedded in the reinforced concrete wall body. And the plurality of supports comprise a combined support and a plurality of inner supports positioned below the combined support. The combined support comprises a top beam, a pressure-bearing arch, a horizontal recoverable pre-stressed anchor cable and a top support. A plurality of enclosing purlins are arranged on the enclosure wall body, and the two ends of the inner support are fixedly connected with the enclosing purlins. By adopting a large number of pre-stressed anchor cables, the use amount of common steel bars in the underground diaphragm wall is reduced, the weight of the steel reinforcement cage is reduced, and the constructable depth of the underground diaphragm wall is increased. Due to the fact that the pre-stressed anchor cables are adopted, the vertical distance between the inner supports is greatly increased, the procedures of supporting, support disassembling and support replacing in the construction period are reduced, construction is convenient, the construction period is short, the pre-stressed anchor cables can be recycled, and good economic benefits are achieved.
本发明提供了一种超深基坑支护结构及其施工方法。该超深基坑支护结构包括围护墙体及若干支撑。围护墙体包括钢筋混凝土墙体及埋置在其内部竖向可回收预应力锚索。若干支撑包括一道组合式支撑及位于其下方的若干道内支撑。组合式支撑包括冠梁、承压拱、水平可回收预应力锚索以及顶部支撑。围护墙体上设置有若干围檩，内支撑的两端与围檩固定连接。本发明通过大量采用预应力锚索，减少了地下连续墙中普通钢筋用量，减小了钢筋笼重量，加大了地下连续墙可施工的深度。由于采用了预应力锚索，内支撑竖向间距大大增加，减少了施工期间的支撑、拆撑、换撑工序，施工方便，工期短，且预应力锚索可回收，具有较佳的经济效益。
Ultra-deep foundation pit supporting structure and construction method thereof
The invention provides an ultra-deep foundation pit supporting structure and a construction method thereof. The ultra-deep foundation pit supporting structure comprises an enclosure wall body and a plurality of supports. The enclosure wall body comprises a reinforced concrete wall body and a vertical recoverable pre-stressed anchor cable embedded in the reinforced concrete wall body. And the plurality of supports comprise a combined support and a plurality of inner supports positioned below the combined support. The combined support comprises a top beam, a pressure-bearing arch, a horizontal recoverable pre-stressed anchor cable and a top support. A plurality of enclosing purlins are arranged on the enclosure wall body, and the two ends of the inner support are fixedly connected with the enclosing purlins. By adopting a large number of pre-stressed anchor cables, the use amount of common steel bars in the underground diaphragm wall is reduced, the weight of the steel reinforcement cage is reduced, and the constructable depth of the underground diaphragm wall is increased. Due to the fact that the pre-stressed anchor cables are adopted, the vertical distance between the inner supports is greatly increased, the procedures of supporting, support disassembling and support replacing in the construction period are reduced, construction is convenient, the construction period is short, the pre-stressed anchor cables can be recycled, and good economic benefits are achieved.
本发明提供了一种超深基坑支护结构及其施工方法。该超深基坑支护结构包括围护墙体及若干支撑。围护墙体包括钢筋混凝土墙体及埋置在其内部竖向可回收预应力锚索。若干支撑包括一道组合式支撑及位于其下方的若干道内支撑。组合式支撑包括冠梁、承压拱、水平可回收预应力锚索以及顶部支撑。围护墙体上设置有若干围檩，内支撑的两端与围檩固定连接。本发明通过大量采用预应力锚索，减少了地下连续墙中普通钢筋用量，减小了钢筋笼重量，加大了地下连续墙可施工的深度。由于采用了预应力锚索，内支撑竖向间距大大增加，减少了施工期间的支撑、拆撑、换撑工序，施工方便，工期短，且预应力锚索可回收，具有较佳的经济效益。
Ultra-deep foundation pit supporting structure and construction method thereof
一种超深基坑支护结构及其施工方法
ZHU JUN (author) / CAO SHIDING (author) / WANG ZHIXIN (author)
2023-09-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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