A kind of upside-down vertical support system and its construction method

Abstract

The invention relates to a vertical supporting system for a reverse construction method and a construction method of the vertical supporting system. The system comprises lattice columns, engineering piles and covering reinforced concrete layers which are all sequentially arranged from inside to outside. First steel reinforcement cages are arranged in the lattice columns. Second steel reinforcement cages are arranged in the engineering piles. Third steel reinforcement cages are arranged in the covering reinforced concrete layers. The system further comprises tying bars. One end of each tying bar is welded to the corresponding first steel reinforcement cage and the other end of each tying bar is welded to the corresponding third steel reinforcement cage. The lattice columns and the covering reinforced concrete layers are poured together to form laminated columns. Pile and column integrated construction is adopted, so that the integrity of column bodies and the quality of column heads are better. The covering reinforced concrete layers are additionally arranged outside the lattice columns, the vertical supporting system is used in the reverse construction stage, the bearing force of the vertical supporting system is improved, the arrangement amount and the detaching amount of temporary vertical supporting systems in the reverse construction stage are greatly reduced, and resources are saved. Meanwhile, an upper structure is prevented from being limited to the construction progress of an underground structure and the whole construction period can be shortened.

Description

technical field [0001] The invention relates to the field of upside-down method construction, in particular to a upside-down method vertical support system and a construction method thereof. Background technique [0002] With the rapid expansion of the city scale, the urban land space has become more and more tense, and the number of high-rise and even super high-rise buildings using the reverse method is gradually increasing. The vertical support system in the reverse construction stage is the key component during the reverse construction of the foundation pit. In the reverse construction stage, it bears the self-weight of the poured main structure beams and slabs and the support of the construction load. Before the overall underground structure is formed, each frame range All the loads inside are borne by one or several vertical support members, so higher requirements are put forward for its bearing capacity and settlement control. [0003] The most basic form of vertical...

AI Technical Summary

Problems solved by technology

Therefore, the lack of bearing capacity of the conventional "one column and one pile" vertical support system commonly used in upside-down construction has become the key to affecting the construction speed of the upper structure, which will delay the overall progress of the project to a certain extent, and reduce the simultaneous construction of high-rise buildings under the upside-down method. Advantages of the method in terms of total construction period

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