A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Replacement type open caisson construction method suitable for soft foundation
The invention discloses a replacement type open caisson construction method suitable for a soft foundation. The method comprises the steps that S1, construction preparation is conducted, specifically,a site is leveled, surveying and setting-out are conducted, and an open caisson center pile, a longitudinal and transverse axis control pile and a foundation pit excavation side boundary are calibrated according to a center base of an open caisson; S2, a foundation pit is excavated, specifically, foundation pit excavating comprises foundation pit earth cutting, and bulldozing area arrangement; S3, the open caisson is manufactured, well body concrete is poured and tamped in three sections, and an inner form is also installed in three sections; S4, sinking of the open caisson is carried out, and sinking of the open caisson includes removing of a cushion layer, earth cutting and sinking, and settlement observing ; and S5, open caisson bottom sealing is conducted, specifically, bottom plate steel bars are bound, and bottom plate concrete is poured and tamped. The method has the beneficial effects and contributions to the prior art that 1, the open caisson adopts a non-drainage sinking mode and rises and sinks according to the design elevation; 2, drainage equipment is arranged around, sectional pouring is carried out on a local section according to actual conditions, and sectional sinking is carried out; and 3, during earth cutting and sinking, layered, uniform and symmetrical operation is carried out, so that the open caisson can uniformly and vertically sink without overlarge inclination.
一种适用于软质地基的置换式沉井施工方法，该方法包括S1：施工准备，包括：平整场地，测量放线，根据沉井的中心座标定出沉井中心桩、纵横轴线控制桩及基坑开挖边线；S2：基坑开挖，包括基坑挖土和布置推土区；S3：沉井制作，井身混凝土分三节浇捣，内模同样分三节安装；S4：沉井下沉，包括拆除垫层，挖土下沉，沉降观察；S5沉井封底，包括绑扎底板钢筋，浇捣底板混凝土。本发明有益效果以及对现有技术贡献包括：1、沉井采取不排水下沉方式，按设计高程起沉；2、采用周围设排水设备，局部地段按实际情况进行分节浇筑，分节下沉方式进行；3、挖土下沉时，分层、均匀、对称地进行，使其能均匀竖直下沉，不得有过大的倾斜。
Replacement type open caisson construction method suitable for soft foundation
The invention discloses a replacement type open caisson construction method suitable for a soft foundation. The method comprises the steps that S1, construction preparation is conducted, specifically,a site is leveled, surveying and setting-out are conducted, and an open caisson center pile, a longitudinal and transverse axis control pile and a foundation pit excavation side boundary are calibrated according to a center base of an open caisson; S2, a foundation pit is excavated, specifically, foundation pit excavating comprises foundation pit earth cutting, and bulldozing area arrangement; S3, the open caisson is manufactured, well body concrete is poured and tamped in three sections, and an inner form is also installed in three sections; S4, sinking of the open caisson is carried out, and sinking of the open caisson includes removing of a cushion layer, earth cutting and sinking, and settlement observing ; and S5, open caisson bottom sealing is conducted, specifically, bottom plate steel bars are bound, and bottom plate concrete is poured and tamped. The method has the beneficial effects and contributions to the prior art that 1, the open caisson adopts a non-drainage sinking mode and rises and sinks according to the design elevation; 2, drainage equipment is arranged around, sectional pouring is carried out on a local section according to actual conditions, and sectional sinking is carried out; and 3, during earth cutting and sinking, layered, uniform and symmetrical operation is carried out, so that the open caisson can uniformly and vertically sink without overlarge inclination.
一种适用于软质地基的置换式沉井施工方法，该方法包括S1：施工准备，包括：平整场地，测量放线，根据沉井的中心座标定出沉井中心桩、纵横轴线控制桩及基坑开挖边线；S2：基坑开挖，包括基坑挖土和布置推土区；S3：沉井制作，井身混凝土分三节浇捣，内模同样分三节安装；S4：沉井下沉，包括拆除垫层，挖土下沉，沉降观察；S5沉井封底，包括绑扎底板钢筋，浇捣底板混凝土。本发明有益效果以及对现有技术贡献包括：1、沉井采取不排水下沉方式，按设计高程起沉；2、采用周围设排水设备，局部地段按实际情况进行分节浇筑，分节下沉方式进行；3、挖土下沉时，分层、均匀、对称地进行，使其能均匀竖直下沉，不得有过大的倾斜。
Replacement type open caisson construction method suitable for soft foundation
一种适用于软质地基的置换式沉井施工方法
LAI YOUXIAN (author) / LIANG JINRUI (author) / XIAO MENGFU (author) / WU JUN (author) / CHEN WEILIANG (author) / ZHANG HENG (author) / ZHOU YANG (author) / LIU JINHAN (author)
2020-12-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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