A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Existing building raft foundation lengthening construction method
The invention belongs to the technical field of buildings, and relates to an existing building raft foundation lengthening construction method which comprises the steps that foundation soil is excavated at one end of an existing building original raft foundation needing to be lengthened to the bottom plane of an original concrete cushion layer at the bottom of the original raft foundation, and an original waterproof layer on the side wall of the original raft foundation needing to be lengthened is dismantled to the specified height H; the method comprises the following steps: chiseling a contact surface of new and old concrete, overlapping a waterproof layer of a new raft foundation with an original waterproof layer, drilling a plurality of horizontal bar planting holes in the side wall of the original raft foundation without the original waterproof layer, pouring a new concrete cushion layer, constructing the waterproof layer of the new raft foundation, and performing bar planting construction. And finally, new raft foundation concrete pouring is conducted. The integrality of the new raft foundation and the old raft foundation can be guaranteed, and the waterproof requirement can be met.
本发明属于建筑技术领域，涉及一种既有建筑筏板基础接长施工方法，在需接长的既有建筑原筏板基础一端开挖地基土至原筏板基础底部的原混凝土垫层底平面，待接长的原筏板基础侧壁原防水层拆除至指定高度H，对新旧混凝土接触面进行凿毛处理，新筏板基础防水层与原防水层搭接施工，在已拆除原防水层的原筏板基础侧壁上钻若干水平植筋孔，再进行新混凝土垫层浇筑施工，随后进行新筏板基础防水层施工，然后植筋施工，最后新筏板基础混凝土浇筑。本发明既能保证新旧筏板基础的整体性，又能满足防水要求。
Existing building raft foundation lengthening construction method
The invention belongs to the technical field of buildings, and relates to an existing building raft foundation lengthening construction method which comprises the steps that foundation soil is excavated at one end of an existing building original raft foundation needing to be lengthened to the bottom plane of an original concrete cushion layer at the bottom of the original raft foundation, and an original waterproof layer on the side wall of the original raft foundation needing to be lengthened is dismantled to the specified height H; the method comprises the following steps: chiseling a contact surface of new and old concrete, overlapping a waterproof layer of a new raft foundation with an original waterproof layer, drilling a plurality of horizontal bar planting holes in the side wall of the original raft foundation without the original waterproof layer, pouring a new concrete cushion layer, constructing the waterproof layer of the new raft foundation, and performing bar planting construction. And finally, new raft foundation concrete pouring is conducted. The integrality of the new raft foundation and the old raft foundation can be guaranteed, and the waterproof requirement can be met.
本发明属于建筑技术领域，涉及一种既有建筑筏板基础接长施工方法，在需接长的既有建筑原筏板基础一端开挖地基土至原筏板基础底部的原混凝土垫层底平面，待接长的原筏板基础侧壁原防水层拆除至指定高度H，对新旧混凝土接触面进行凿毛处理，新筏板基础防水层与原防水层搭接施工，在已拆除原防水层的原筏板基础侧壁上钻若干水平植筋孔，再进行新混凝土垫层浇筑施工，随后进行新筏板基础防水层施工，然后植筋施工，最后新筏板基础混凝土浇筑。本发明既能保证新旧筏板基础的整体性，又能满足防水要求。
Existing building raft foundation lengthening construction method
既有建筑筏板基础接长施工方法
ZONG KEFENG (author) / LIU SHANTONG (author) / CHEN HAO (author) / JIA MINGLIANG (author)
2022-03-22
Patent
Electronic Resource
Chinese
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