Partition partition construction method of super large foundation pit
A construction method and foundation pit technology, which can be used in infrastructure engineering, excavation, construction, etc., and can solve problems such as slowing down the total construction period of the project
Active Publication Date: 2020-09-01
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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image 3 Sequence of construction for the zoning scheme shown and figure 2 The construction sequence is basically the same, but since the foundation pit under the road under construction in the later period includes a part of the land area, the completion time of the superstructure on this part of the land area will be later than the completion time of the general area of the land area, which will slow down the entire project total duration of
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[0089] The invention discloses a partition partition construction method for a super-large foundation pit, which comprises the following steps:
[0090] Such as Figure 4 As shown, in step 1, there are roads between adjacent neighborhood plots, and a partition wall is set at the boundary between the neighborhood plots and roads to partition the overall super-large foundation pit. Boundaries coincide, and the overall super-large foundation pit is divided into the plot foundation pit under the neighborhood plot and the road foundation pit under the road;
[0091] Such as Figure 5 As shown, in step 2, first excavate the foundation pit of the plot, excavate the foundation pit of the plot on both sides of the road synchronously, and the soil below the road forms a limited soil separation zone; Figure 5 The foundation pit of the block marked as construction step ① is the preliminary construction foundation pit. Figure 5 The road foundation pit marked as construction step ② is ...
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The invention discloses an oversized foundation pit partitioning construction method. The conventional foundation pit subarea condition that the distance between foundation pits simultaneously excavated is not less than two times of the depth of the foundation pit is not required, and the integral foundation pit can be partitioned by directly arranging a separation wall at the boundary part of a neighborhood plot and an interior road. A plot foundation pit of an above-ground building is constructed in advance, and after a basement structure of the above-ground building is completed, the foundation pit below the road starts to be constructed. During plot foundation pit construction, the ground at a road area can act as a construction site of the plot foundation pit; after a plot basement iscompleted, basement top plates (without a tower part) of the plot basement can be used as a construction site for the foundation pit below the road subsequently; and the foundation pit below the roadand a plot upper structure are constructed in the same term. In this way, by adopting the oversized foundation pit partitioning construction method, the construction period of an integral project isconsistent with a tower having the longest period, and the construction is free from additional influence from super large area foundation pit construction; in addition, wide site conditions are created for the construction of interior sub-foundation pits by the oversized foundation pit partitioning construction method and the construction cost is not increased.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a method for partitioning and partitioning super-large foundation pits. Background technique [0002] At present, my country's urban planning and construction is developing towards the trend of small road network and large space. The simultaneous development of super large underground spaces in multiple neighborhood plots and enclosed municipal roads is gradually increasing, which brings more simultaneous construction of super large foundation pits. problem. To carry out simultaneous construction of super-large foundation pits in soft soil areas, in order to ensure the safety of the foundation pit and the requirements of the construction site, it is necessary to plan the division of the entire foundation pit first. The layout of a typical foundation pit group is as follows: figure 1 shown. Road (1) and road (2) divide four plots: plot A, plot B, plot C and plot D....
Claims
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IPC IPC(8): E02D17/02E02D17/04
CPCE02D17/02E02D17/04
Inventor 张中杰邓长茂俞震中陈加核张擎宇
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD