A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for adding pile foundation in existing building
The invention relates to the technical field of building reinforcement, in particular to a construction method for adding a pile foundation in an existing building, which comprises the following steps: S1, a site is leveled, and floor tiles are removed; S2, stress dissipation holes are formed, soil-squeezing buffer ditches are excavated, and coarse sand is backfilled; S3, a prefabricated concrete pipe pile is conveyed to the pile position for pile pressing; S4, when the pressure value reaches two times of the final pressure value of pile pressing and the designed single-pile bearing capacity characteristic value, and the pile length of the sunk pile is basically matched with the situation reflected by the pile position geological data of the corresponding position, pile pressing is stopped; S5, re-pressing is conducted, settlement observation is conducted, and whether the pile body bearing capacity meets the design requirement or not is checked; S6, the stress dissipation holes and the soil squeezing buffer ditches are backfilled; S7, a ground beam foundation trench is excavated, specifically, steel bars are planted on an original bearing platform beam of the existing building, and rectangular columns and embedded components are constructed on the ground beam foundation trench; and S8, the ground beam and a ground beam plate are poured by using concrete. The method has the effect of preventing secondary settlement of the existing building.
本发明涉及建筑加固的技术领域，尤其是涉及一种既有建筑内部增加桩基施工方法,其包括以下步骤，S1：平整场地，将地板砖拆除；S2：布置应力消散孔，开挖挤土缓冲沟，并回填粗砂；S3：将预制混凝土管桩运送到桩位进行压桩；S4：当压力值达到压桩的终压值设计单桩承载力特征值两倍时，沉桩的桩长亦与相对应位置桩位地质资料反映的情况基本吻合时，终止压桩；S5；进行复压，进行沉降观测，检查桩身承载力是否满足设计要求；S6：回填应力消散孔和挤土缓冲沟；S7，开挖地梁基槽：在既有建筑原有的承台梁上进行植筋，在地梁基槽上进行矩形柱与预埋构件的施工；S8：在使用混凝土浇筑地梁与地梁梁板。本发明具有防止既有建筑发生二次沉降的效果。
Construction method for adding pile foundation in existing building
The invention relates to the technical field of building reinforcement, in particular to a construction method for adding a pile foundation in an existing building, which comprises the following steps: S1, a site is leveled, and floor tiles are removed; S2, stress dissipation holes are formed, soil-squeezing buffer ditches are excavated, and coarse sand is backfilled; S3, a prefabricated concrete pipe pile is conveyed to the pile position for pile pressing; S4, when the pressure value reaches two times of the final pressure value of pile pressing and the designed single-pile bearing capacity characteristic value, and the pile length of the sunk pile is basically matched with the situation reflected by the pile position geological data of the corresponding position, pile pressing is stopped; S5, re-pressing is conducted, settlement observation is conducted, and whether the pile body bearing capacity meets the design requirement or not is checked; S6, the stress dissipation holes and the soil squeezing buffer ditches are backfilled; S7, a ground beam foundation trench is excavated, specifically, steel bars are planted on an original bearing platform beam of the existing building, and rectangular columns and embedded components are constructed on the ground beam foundation trench; and S8, the ground beam and a ground beam plate are poured by using concrete. The method has the effect of preventing secondary settlement of the existing building.
本发明涉及建筑加固的技术领域，尤其是涉及一种既有建筑内部增加桩基施工方法,其包括以下步骤，S1：平整场地，将地板砖拆除；S2：布置应力消散孔，开挖挤土缓冲沟，并回填粗砂；S3：将预制混凝土管桩运送到桩位进行压桩；S4：当压力值达到压桩的终压值设计单桩承载力特征值两倍时，沉桩的桩长亦与相对应位置桩位地质资料反映的情况基本吻合时，终止压桩；S5；进行复压，进行沉降观测，检查桩身承载力是否满足设计要求；S6：回填应力消散孔和挤土缓冲沟；S7，开挖地梁基槽：在既有建筑原有的承台梁上进行植筋，在地梁基槽上进行矩形柱与预埋构件的施工；S8：在使用混凝土浇筑地梁与地梁梁板。本发明具有防止既有建筑发生二次沉降的效果。
Construction method for adding pile foundation in existing building
一种既有建筑内部增加桩基施工方法
YANG CHUNTAO (author) / KOU JU'AN (author) / ZHANG FENGXIANG (author) / XIE DONGMEI (author) / LI HUISHENG (author)
2022-02-01
Patent
Electronic Resource
Chinese
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