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A platform for research: civil engineering, architecture and urbanism
Axial force compensating type prestress fish-bellied type foundation pit steel support structure and construction method thereof
The invention relates to an axial force compensating type prestress fish-bellied type foundation pit steel support structure and a construction method thereof. Supports at two ends of a transverse steel tube support are located on a surrounding purlin of the upper end part of a foundation pit fender post, that is, two outer ends hinged to a force transferring steel tube segment are hinged to the surrounding purlin by end part hinge chains, the surrounding purlin is fixed to the upper surface, located on the foundation pit fender post, on the supports at two ends arranged in parallel, two innerends hinged to the force transferring steel tube segment are hinged to a hinge flange conversion steel tube segment on a flange by middle hinge chains, and a flange steel tube segment is arranged inthe middle of the flange. The flange steel tube segment is located in the middle of the transverse steel tube support, and tube segments can be increased or the lengths of the tube segments can be changed according to dimension of a foundation pit, and the hinged connection is fixed by a joint pin bolt. The axial force compensating type prestress fish-bellied type foundation pit steel support structure is suitable for large foundation pit and foundation pit group engineering, wherein it is strict in deformation demand of the foundation pit and external prestress cannot be applied to anchor thefoundation pit. Meanwhile, the axial force compensating type prestress fish-bellied type foundation pit steel support structure overcomes the problems that axial force compensation of a conventionaljack type horizontal support is easy to be unstable due to lateral deflection and columns are hard to resist horizontal deformation.
一种轴力补偿式预应力鱼腹式基坑钢支撑结构及其施工方法，横向钢管支撑的两端支座位于基坑围护桩上端部的围檩上，即两端铰链传力钢管段的两外端由端部铰接链铰接在围檩上，围檩固定在并排排列的两端支座位于基坑围护桩的上面，两端铰链传力钢管段的两内端由中部铰接链铰接在法兰上的铰链法兰转换钢管段上，法兰的中间为法兰钢管段；法兰钢管段位于横向钢管支撑的中部且可以根据基坑尺寸增加管节段或者改变管节段长度，铰接的连接处由铰链销栓固定；适用于基坑变形要求严格、无法实施坑外预应力锚固的大型基坑及基坑群工程，同时克服了传统千斤顶式水平支撑轴力补偿易发生压屈失稳与立柱难以抵抗水平变形的问题。
Axial force compensating type prestress fish-bellied type foundation pit steel support structure and construction method thereof
The invention relates to an axial force compensating type prestress fish-bellied type foundation pit steel support structure and a construction method thereof. Supports at two ends of a transverse steel tube support are located on a surrounding purlin of the upper end part of a foundation pit fender post, that is, two outer ends hinged to a force transferring steel tube segment are hinged to the surrounding purlin by end part hinge chains, the surrounding purlin is fixed to the upper surface, located on the foundation pit fender post, on the supports at two ends arranged in parallel, two innerends hinged to the force transferring steel tube segment are hinged to a hinge flange conversion steel tube segment on a flange by middle hinge chains, and a flange steel tube segment is arranged inthe middle of the flange. The flange steel tube segment is located in the middle of the transverse steel tube support, and tube segments can be increased or the lengths of the tube segments can be changed according to dimension of a foundation pit, and the hinged connection is fixed by a joint pin bolt. The axial force compensating type prestress fish-bellied type foundation pit steel support structure is suitable for large foundation pit and foundation pit group engineering, wherein it is strict in deformation demand of the foundation pit and external prestress cannot be applied to anchor thefoundation pit. Meanwhile, the axial force compensating type prestress fish-bellied type foundation pit steel support structure overcomes the problems that axial force compensation of a conventionaljack type horizontal support is easy to be unstable due to lateral deflection and columns are hard to resist horizontal deformation.
一种轴力补偿式预应力鱼腹式基坑钢支撑结构及其施工方法，横向钢管支撑的两端支座位于基坑围护桩上端部的围檩上，即两端铰链传力钢管段的两外端由端部铰接链铰接在围檩上，围檩固定在并排排列的两端支座位于基坑围护桩的上面，两端铰链传力钢管段的两内端由中部铰接链铰接在法兰上的铰链法兰转换钢管段上，法兰的中间为法兰钢管段；法兰钢管段位于横向钢管支撑的中部且可以根据基坑尺寸增加管节段或者改变管节段长度，铰接的连接处由铰链销栓固定；适用于基坑变形要求严格、无法实施坑外预应力锚固的大型基坑及基坑群工程，同时克服了传统千斤顶式水平支撑轴力补偿易发生压屈失稳与立柱难以抵抗水平变形的问题。
Axial force compensating type prestress fish-bellied type foundation pit steel support structure and construction method thereof
一种轴力补偿式预应力鱼腹式基坑钢支撑结构及其施工方法
QU HONGFU (author) / CAI XIN (author) / LI BAOJUN (author) / MAO XIONGWEI (author) / FU JIN (author) / CHEN YANG (author) / XIANG HUIMING (author) / ZHANG KUIKUAN (author) / SHI HAOJIE (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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