Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Open caisson non-drainage sinking construction method
The invention relates to an open caisson non-drainage sinking construction method. The method comprises the following steps that S1, water jetting pipes are arranged around an open caisson, high-pressure water is sprayed on a soil body around the open caisson, and the soil body in the side wall area of the open caisson is cut and softened; S2, high-pressure water is sprayed into the open caisson so that the high-pressure water punches a soil body at the bottom of the open caisson, the bottom of the open caisson is punched into a pot bottom shape with a concave center, the soil body and the water are mixed to form slurry, then the slurry is pumped out of the open caisson, and the open caisson squeezes soil and sinks at the positions of blade feet; S3, every time the open caisson sinks by acertain distance, high-pressure water spraying is conducted on a soil body in a newly-sinking area of the open caisson through the water jetting pipes in a segmented water injection mode; S4, after the open caisson sinks to the designed position, grouting is conducted on a soil body outside the open caisson in a retreating type segmented grouting mode through the water jetting pipes, and the soilbody outside the open caisson is reinforced; and S5, concrete bottom sealing is conducted on the bottom of the open caisson. According to the open caisson non-drainage sinking construction method, theproblems of inclination, sudden sinking and water gushing during sinking of the open caisson can be reduced.
本申请涉及一种沉井不排水下沉施工方法，包括以下步骤：S1、沿着沉井四周布设射水管，向沉井四周土体高压喷水，将沉井侧壁区域的土体切割、软化；S2、向沉井内高压喷水，使高压水冲切沉井底部土体，将沉井底部冲挖成中心下凹的锅底形状，并且使土体和水混合形成泥浆，然后将泥浆抽排出沉井外，沉井在刃脚处挤土下沉；S3、沉井每下沉一段距离，利用分段注水的方式，通过射水管向沉井新下沉区域的土体进行高压喷水；S4、沉井下沉到设计位置后，通过射水管利用后退式分段注浆的方式向沉井外土体进行注浆，对沉井外土体进行加固；S5、对沉井底部进行混凝土封底。本申请采用不排水下沉的施工方法，能够减少沉井下沉时发生倾斜、突沉、涌水的问题。
Open caisson non-drainage sinking construction method
The invention relates to an open caisson non-drainage sinking construction method. The method comprises the following steps that S1, water jetting pipes are arranged around an open caisson, high-pressure water is sprayed on a soil body around the open caisson, and the soil body in the side wall area of the open caisson is cut and softened; S2, high-pressure water is sprayed into the open caisson so that the high-pressure water punches a soil body at the bottom of the open caisson, the bottom of the open caisson is punched into a pot bottom shape with a concave center, the soil body and the water are mixed to form slurry, then the slurry is pumped out of the open caisson, and the open caisson squeezes soil and sinks at the positions of blade feet; S3, every time the open caisson sinks by acertain distance, high-pressure water spraying is conducted on a soil body in a newly-sinking area of the open caisson through the water jetting pipes in a segmented water injection mode; S4, after the open caisson sinks to the designed position, grouting is conducted on a soil body outside the open caisson in a retreating type segmented grouting mode through the water jetting pipes, and the soilbody outside the open caisson is reinforced; and S5, concrete bottom sealing is conducted on the bottom of the open caisson. According to the open caisson non-drainage sinking construction method, theproblems of inclination, sudden sinking and water gushing during sinking of the open caisson can be reduced.
本申请涉及一种沉井不排水下沉施工方法，包括以下步骤：S1、沿着沉井四周布设射水管，向沉井四周土体高压喷水，将沉井侧壁区域的土体切割、软化；S2、向沉井内高压喷水，使高压水冲切沉井底部土体，将沉井底部冲挖成中心下凹的锅底形状，并且使土体和水混合形成泥浆，然后将泥浆抽排出沉井外，沉井在刃脚处挤土下沉；S3、沉井每下沉一段距离，利用分段注水的方式，通过射水管向沉井新下沉区域的土体进行高压喷水；S4、沉井下沉到设计位置后，通过射水管利用后退式分段注浆的方式向沉井外土体进行注浆，对沉井外土体进行加固；S5、对沉井底部进行混凝土封底。本申请采用不排水下沉的施工方法，能够减少沉井下沉时发生倾斜、突沉、涌水的问题。
Open caisson non-drainage sinking construction method
一种沉井不排水下沉施工方法
LU PING (Autor:in) / CHEN YONGHUA (Autor:in) / WANG YE (Autor:in) / ZHAO XIN (Autor:in) / ZHANG YANHUA (Autor:in) / QI LIYONG (Autor:in) / WEN ZHENHUAN (Autor:in)
22.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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