Method for improving waterproof performance of foundation pit SMW fender pile

• Main Authors: CHAI WENDONG, XIA CHUNLIANG, KONG HENG, XIE WEIDONG, LIU CHUAN, DING BIN, LI XIN, LI JIANHUA, YUAN JUN, LI ZHAOPING, WANG XINGQUAN
• Format: Patent
• Language: Chinese; English
• Published: 16.11.2018
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a method for improving waterproof performance of a foundation pit SMW fender pile. The method comprises the following steps that a plurality of grouting pipes are arranged at the inner side groove positions of each shape steel close to a foundation pit SMW supporting structure, the grouting pipes are inserted into a foundation pit followed with the shape steel; a plurality of grout vent holes are formed in the grouting pipes; mortar surface is constructed on the side wall of a foundation pit SMW pile body, then waterproof roll layers are paved, finally cement soil is poured between the waterproof roll layers and the side wall of the inner structure of the foundation pit; the shape steel is pulled out, the grouting pipes are carried out pressure grouting after the shape steel pulled out, grout is in the action of inner pressure, rubber rings wrapped outside the grouting pipes are distended, and the pressure is stopped when the pressed grout fills air gaps remaining in the foundation pit