Support system with underground horizontal support and construction method thereof

Abstract

The invention provides a support system with an underground horizontal support and a construction method thereof. A horizontal propelling device and end pipes with disc cutters at the front ends are previously arranged on pillars, the pillars are lowered to the same height positions at the bottoms of corresponding foundation pits via preset pile holes, and the end pipes are driven to move towardspillars at the other side by the horizontal propelling device, forming a space capable of being used for installing the pipe joints of steel pipes section by section, so that horizontal support is formed in soil after the installation of the steel pipes without digging the foundation pits, and the technical problem that effective control is difficult to carry out on the deformation of the foundation pits if a horizontal support construction mode is set after the foundation pits are dug is solved. The purposes of greatly improving the rigidity of the foundation pit support system, effectively reducing the bottom deformation of the foundation pits and the shift of the foundation pit support system during the digging of the foundation pits and effectively improving the safety performance of the foundation pit support system and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a support system and a construction method thereof, in particular to a support system with an underground horizontal support and a construction method thereof. Background technique [0002] In the design and construction of high-rise buildings, it is generally necessary to excavate deep foundation pits. Deep foundation pits can not only improve the space utilization rate of the land, but also provide a stable foundation for the earthquake resistance and wind resistance of high-rise buildings. With the increasing shortage of land for urban construction and the rapid development of underground space, the excavation of foundation pits is getting deeper and deeper. [0003] It is worth noting that during the excavation of the foundation pit, due to the unloading of the excavation in the pit, the enclosure structure will be displaced under the action of the internal and ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above, the present invention provides a support system with underground horizontal support and its construction method. By presetting the horizontal propulsion device and the end pipe with the cutter head on the column, it descends to the vertical column through the preset pile hole. Corresponding to the high position at the bottom of the foundation pit, use the horizontal propulsion device to drive the end pipe towards the column on the other side to form a space for installing steel pipe joints one by one, so that the installation can be completed on the steel pipe without excavating the foundation pit. Finally, the horizontal support is formed in the soil, which solves the technical problem that the construction method of digging the foundation pit first and then setting the horizontal support is difficult to effectively control the deformation of the foundation pit, and achieves the purpose of effectively controlling the deformation of the foundation pit and reducing the cost of construction control.

Images