2022 first-class construction engineer municipal engineering golden test site underground continuous wall , Notes of a construction master, press and hold to like + forward + comment for continuous updates, click on my avatar in the Wendang version and send me a private message: 2022
There is an underground continuous wall It has the following characteristics: low vibration and noise during construction, high wall stiffness, and little disturbance to the surrounding strata; it can be applied to all soil layers, has high cost and deep depth. Special trenching equipment is used for construction. The trenching methods can be divided into grab type, impact type and rotary type. The length of the straight groove section of the underground diaphragm wall should be 4~6m.
The main functions of the guide wall are:
① soil retaining ② benchmark function ③ load-bearing ④ mud storage ⑤ others: the guide wall can also prevent mud leakage and prevent rain and other ground water from flowing into the tank.
The groove section joints of the underground diaphragm wall should be selected according to the following principles:
① The underground diaphragm wall should use circular lock pipe joints, corrugated pipe joints, wedge joints, I-shaped steel joints or concrete prefabricated joints, etc. Flexible joint ;
② When the underground continuous wall is used as the main underground structure exterior wall and needs to form an integral wall, rigid joints should be used; rigid joints can be linear or cross-shaped perforated steel plate joints, steel bar socket joints, etc. .
