Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Local freezing construction method for joint waterproofing of underground diaphragm wall
The invention discloses a local freezing construction method for underground diaphragm wall joint waterproofing, which comprises the following steps of: after an underground diaphragm wall groove section is excavated, arranging a micro-channel heat exchange plate in a joint of the underground diaphragm wall groove section, and simultaneously putting the micro-channel heat exchange plate into the groove section along with an underground diaphragm wall reinforcement cage; after groove section concrete is poured, the micro-channel heat exchange plate serves as a part of the underground diaphragm wall and is permanently arranged in the wall body; after concrete of the diaphragm wall is poured, all the joints are grouped according to the environment of a building around the positions where the joints are located and the ground surface deformation control level, the pre-freezing range of the joints of the diaphragm wall is determined, and micro-channel heat exchange plates in the pre-freezing range and a ground freezing station are connected to form a closed refrigerant circulation loop for pre-freezing; and after the freezing state reaches the standard, excavation operation in the foundation pit is conducted. According to the scheme, the foundation pit construction process can be prevented from being affected by underground water, and meanwhile the safety of surrounding building structures is guaranteed.
本发明公开了一种用于地下连续墙接缝防水的局部冻结施工方法，其在地连墙槽段挖掘之后，通过在地连墙槽段接头处内置微通道换热板，并随地连墙钢筋笼同时下放进槽段内，浇筑槽段混凝土后微通道换热板作为地连墙的一部分永久存在于墙体内部；在浇筑地连墙混凝土之后，根据接缝所在位置周围建筑物环境、地表变形控制等级，将所有接缝进行分组，确定地连墙接缝的预冻结范围，并将预冻结接缝范围内的微通道换热板与地面冷冻站连接成闭合的冷媒循环回路进行预冻结，在冻结状态达标后进行基坑内部开挖作业。本方案可以防止基坑施工过程中受地下水影响，同时保证周边建筑物结构安全。
Local freezing construction method for joint waterproofing of underground diaphragm wall
The invention discloses a local freezing construction method for underground diaphragm wall joint waterproofing, which comprises the following steps of: after an underground diaphragm wall groove section is excavated, arranging a micro-channel heat exchange plate in a joint of the underground diaphragm wall groove section, and simultaneously putting the micro-channel heat exchange plate into the groove section along with an underground diaphragm wall reinforcement cage; after groove section concrete is poured, the micro-channel heat exchange plate serves as a part of the underground diaphragm wall and is permanently arranged in the wall body; after concrete of the diaphragm wall is poured, all the joints are grouped according to the environment of a building around the positions where the joints are located and the ground surface deformation control level, the pre-freezing range of the joints of the diaphragm wall is determined, and micro-channel heat exchange plates in the pre-freezing range and a ground freezing station are connected to form a closed refrigerant circulation loop for pre-freezing; and after the freezing state reaches the standard, excavation operation in the foundation pit is conducted. According to the scheme, the foundation pit construction process can be prevented from being affected by underground water, and meanwhile the safety of surrounding building structures is guaranteed.
本发明公开了一种用于地下连续墙接缝防水的局部冻结施工方法，其在地连墙槽段挖掘之后，通过在地连墙槽段接头处内置微通道换热板，并随地连墙钢筋笼同时下放进槽段内，浇筑槽段混凝土后微通道换热板作为地连墙的一部分永久存在于墙体内部；在浇筑地连墙混凝土之后，根据接缝所在位置周围建筑物环境、地表变形控制等级，将所有接缝进行分组，确定地连墙接缝的预冻结范围，并将预冻结接缝范围内的微通道换热板与地面冷冻站连接成闭合的冷媒循环回路进行预冻结，在冻结状态达标后进行基坑内部开挖作业。本方案可以防止基坑施工过程中受地下水影响，同时保证周边建筑物结构安全。
Local freezing construction method for joint waterproofing of underground diaphragm wall
一种用于地下连续墙接缝防水的局部冻结施工方法
WU YUANHAO (Autor:in) / SUN MIN (Autor:in) / HAN LEI (Autor:in) / FU SHUOREN (Autor:in) / HONG ZEQUN (Autor:in) / DOU JINZHONG (Autor:in) / WU JIANQIU (Autor:in) / FANG XINGJIE (Autor:in) / YUAN QINGYUN (Autor:in) / WANG WEI (Autor:in)
14.04.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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