Digging foundation enlarged bottom section support structure
A support structure and excavation foundation technology, which is applied in the field of excavation foundation expansion bottom section support structure, can solve problems such as top wall collapse, and achieve the effects of easy installation and operation, fast construction speed and convenient construction
Pending Publication Date: 2020-09-15
中铁二院成都勘察设计研究院有限责任公司
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Problems solved by technology
[0004] The above-mentioned related technologies have the following defects: when the construction workers dig out the cavity 23, the top wall of the cavity 23 will collapse due to the softness of the underground soil, causing serious safety accidents
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[0036] The following is attached Figure 1-5 The application is described in further detail.
[0037] Such as figure 1 As shown, the embodiment of the present application discloses a support structure for the bottom expansion section of the excavated foundation. refer to figure 1 , the support structure of the excavation foundation expansion section includes a plurality of support assemblies for supporting to the top wall of the cavity 23. In this embodiment, because the top wall of the cavity 23 includes four faces, the support assemblies are provided with four groups and located below each face.
[0038] combine figure 1 and figure 2 , each support assembly includes a plurality of main beams 1 arranged at intervals, and a plurality of main beams 1 of each support assembly are provided with an abutment for abutting against the top wall of the cavity 23; in this embodiment , each support assembly includes three main beams 1 .
[0039] combine figure 2 and image 3 ...
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The invention relates to a digging foundation enlarged bottom section support structure, and belongs to the field of railway station construction. The digging foundation enlarged bottom section support structure comprises a plurality of support assemblies used for supporting on the top wall of a cavity. Each support assembly comprises a plurality of main beams arranged at intervals, abutting pieces used for abutting on the top wall of the cavity are arranged on the multiple main beams of each support assembly, and each support assembly further comprises support pieces used for driving the abutting pieces to abut on the top wall of the cavity. The supporting assemblies are arranged after an operator excavates a certain width when excavating the cavity, and the supporting pieces can abut theabutting pieces on the top wall of the cavity, so that the abutting pieces have a supporting effect on the top wall of the cavity. At that time, the next section is excavated, and the supporting assemblies are arranged, collapse of the top wall of the cavity is prevented, and therefore serous safety accidents are prevented.
Description
technical field [0001] The present application relates to the field of railway station construction, in particular to a support structure for excavated and expanded bottom sections of excavated foundations. Background technique [0002] The catenary pillars spanning multiple tracks in the railway station yard mostly adopt soft or hard spanning steel columns with large capacity, and most of the foundations adopt extended foundations. The distance between the two lines in the station is generally small. In the expansion and reconstruction project of the station, it is inevitable to set up catenary pillars between the two lines when the track is added. In this case, the catenary pillar foundation construction is limited by the site, and the excavation work area is small, so the conventional foundation pit excavation method cannot be adopted, and the foundation excavation mostly adopts the form of excavation. [0003] Such as Figure 5 As shown, the existing extended foundation...
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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 汪小锋张帆黎仕强郑波高诗乔杜熙康勋曲键项金志葛洪林范荣鑫
Owner 中铁二院成都勘察设计研究院有限责任公司