Simple foundation pit supporting system and construction method thereof
A simple technology for foundation pit support, which is applied in foundation structure engineering, excavation, construction, etc., and can solve problems such as long period, low economy, and large area occupied by grading excavation
Active Publication Date: 2017-05-10
SHANGHAI ERSHIYE CONSTR CO LTD +1
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Problems solved by technology
Both of the above two enclosure methods cannot solve the problems of large occupied area and low economic efficiency: grading excavation occupies a large area and is only suitable for relatively open surroundings of foundation pits
Excavation of the foundation pit by means of enclosure, although the impact on the deformation of the surrounding environment is small, but special steel or a large amount of cement is required as the enclosure, the construction process is complicated, the cycle is long, and the construction cost is too high
Method used
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[0027] The present invention is further illustrated below by specific examples.
[0028] A foundation pit project is 17.5 meters (m) long, 6.8m wide, and the excavation depth is 2.8m. The above-mentioned tool-type simple maintenance system of the enclosure structure.
[0029] Such as figure 1 , 2 , Shown in 3, 4, a kind of tool type simple foundation pit support system, it is made up of retaining board 1, support back corrugated 2, support system, prefabricated support 8, temporary diagonal support system.
[0030] Such as figure 1 , 2 , 3, 4, and 5, the retaining board 1 is a square plank with a certain width and thickness, which is arranged continuously from bottom to top close to the side wall of the foundation pit. Square planks with a width of 200mm (millimeters) and a thickness of 50mm are used, and a total of 14 planks are used from bottom to top along the side wall of the foundation pit.
[0031] Such as figure 1 , 2 , 3, 4, and 5, the supporting back corrugate...
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The invention relates to the field of civil engineering, in particular to a simple foundation pit supporting system. The simple foundation pit supporting system includes soil baffle plates, support back ridges, support rod groups, prefabricated support bases, and temporary diagonal brace rod groups; the soil baffle plates are continuously arranged on side walls of a foundation pit; the support back ridges are fixed on the soil baffle plates; two ends of horizontal support rods and longitudinal support rods are fixedly connected to the support back ridges through adjustable support bases; the horizontal support rods and the longitudinal support rods are connected or prolonged through connection fasteners; the prefabricated support bases are arranged on the bottom of the foundation pit; two ends of vertical support rods are connected to connection points of the horizontal support rods and the longitudinal support rods and the prefabricated support bases; temporary support bases are arranged on the bottom surface of the foundation pit; temporary back ridges are arranged on the soil baffle plates; and two ends of diagonal braces are connected to the temporary back ridges and the temporary support bases respectively. The simple foundation pit supporting system is established by circulation materials such as common scaffold steel tubes and wood plates for construction sites, is good in foundation pit stability, is convenient in construction, is high in reuse rate, and is low in cost.
Description
technical field [0001] The invention relates to the field of civil engineering, in particular to a simple foundation pit support system and a construction method thereof. Background technique [0002] In recent years, foundation pit engineering has developed towards super large and super deep, and deep foundation pit enclosure technology has achieved rapid development. For some good soil quality, excavation area (<1000m 2 ) and depth (<4m) are small and medium-sized shallow foundation pits, due to low technical difficulty and small development potential, they have not been valued by researchers, and the development of related technologies has been slow. [0003] At present, most of the small and medium-sized shallow foundation pits adopt two construction methods, namely grading excavation and using steel sheet piles, SMW piles, and gravity retaining walls for enclosure. Both of the above two enclosure methods cannot solve the problems of large occupied area and low e...
Claims
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Inventor 岳齐贤周学民白秉英赵建立
Owner SHANGHAI ERSHIYE CONSTR CO LTD