Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for pulling out joint pipe in wall section connection construction of underground diaphragm wall
The invention provides a construction method for pulling out a joint pipe in underground diaphragm wall section connection construction, and relates to the technical field of diaphragm wall construction, and the construction method comprises the following steps: S1, determining the minimum pipe separation period: sampling and forming a compressive strength test block when concrete is cast, and setting the period of the test block as the minimum pipe separation period; s2, pouring construction and pipe drawing construction are conducted, specifically, after pouring is started for 3 h, micro movement is started, then the interval time of movable joint pipes should not exceed 30 min, and lifting is conducted by 1-2 cm each time; when the age of the pipe bottom concrete reaches the determined minimum pipe stripping age, the joint pipe is pulled out step by step according to the pouring speed of the concrete; and S3, the final stage process control of pipe drawing construction is conducted, specifically, the pipe is filled with slurry, the pipe drawing speed is properly reduced, and the last section of pipe should stay in the hole for 1-2 hours. By means of the steps, it is guaranteed that the pipe drawing construction process is conducted safely and stably, hole forming is stable, and the problems of concrete hole wall collapse and pipe casting accidents are avoided.
本发明提供一种地下连续墙墙段连接施工中拔出接头管的施工方法，涉及防渗墙施工技术领域，包括以下步骤：S1.确定最小脱管龄期：在混凝土开浇时取样成型抗压强度试块，将该试块的龄期定为最小脱管龄期；S2.浇筑施工与拔管施工：开浇3h后开始微动，此后活动接头管的间隔时间不应超过30min，每次提升1～2cm；当管底混凝土的龄期达到确定的最小脱管龄期后，按照混凝土的浇筑速度逐步起拔接头管；S3.拔管施工的最后阶段过程控制：向管内注满泥浆，适当降低拔管速度，最后一节管在孔内应停留1‑2小时。通过上述步骤，保证了拔管施工过程的安全稳定进行，成孔稳定，避免了混凝土孔壁坍塌，以及铸管事故问题。
Construction method for pulling out joint pipe in wall section connection construction of underground diaphragm wall
The invention provides a construction method for pulling out a joint pipe in underground diaphragm wall section connection construction, and relates to the technical field of diaphragm wall construction, and the construction method comprises the following steps: S1, determining the minimum pipe separation period: sampling and forming a compressive strength test block when concrete is cast, and setting the period of the test block as the minimum pipe separation period; s2, pouring construction and pipe drawing construction are conducted, specifically, after pouring is started for 3 h, micro movement is started, then the interval time of movable joint pipes should not exceed 30 min, and lifting is conducted by 1-2 cm each time; when the age of the pipe bottom concrete reaches the determined minimum pipe stripping age, the joint pipe is pulled out step by step according to the pouring speed of the concrete; and S3, the final stage process control of pipe drawing construction is conducted, specifically, the pipe is filled with slurry, the pipe drawing speed is properly reduced, and the last section of pipe should stay in the hole for 1-2 hours. By means of the steps, it is guaranteed that the pipe drawing construction process is conducted safely and stably, hole forming is stable, and the problems of concrete hole wall collapse and pipe casting accidents are avoided.
本发明提供一种地下连续墙墙段连接施工中拔出接头管的施工方法，涉及防渗墙施工技术领域，包括以下步骤：S1.确定最小脱管龄期：在混凝土开浇时取样成型抗压强度试块，将该试块的龄期定为最小脱管龄期；S2.浇筑施工与拔管施工：开浇3h后开始微动，此后活动接头管的间隔时间不应超过30min，每次提升1～2cm；当管底混凝土的龄期达到确定的最小脱管龄期后，按照混凝土的浇筑速度逐步起拔接头管；S3.拔管施工的最后阶段过程控制：向管内注满泥浆，适当降低拔管速度，最后一节管在孔内应停留1‑2小时。通过上述步骤，保证了拔管施工过程的安全稳定进行，成孔稳定，避免了混凝土孔壁坍塌，以及铸管事故问题。
Construction method for pulling out joint pipe in wall section connection construction of underground diaphragm wall
一种地下连续墙墙段连接施工中拔出接头管的施工方法
JIANG ZHIAN (Autor:in) / WANG BAOHUI (Autor:in) / MIAO ZHIBIN (Autor:in) / TIAN YOUGANG (Autor:in) / ZHANG BAOZENG (Autor:in) / JIAO CHENLEI (Autor:in) / SU HANG (Autor:in) / SONG YAJING (Autor:in)
12.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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