A casing for anchor rods passing through underground continuous walls

Abstract

The invention belongs to the field of foundation pit support and relates to a casing for anchor rods passing through an underground diaphragm wall. The pre-embedded direction in the underground diaphragm wall is determined according to the insertion direction of the rear anchor rod, and the two ends of the casing are respectively sealed with rubber stoppers, and the two ends of the casing respectively pass through the longitudinal main reinforcement of the underground diaphragm wall outside, and inserted into the scope of the reinforced protective layer of the underground continuous wall. When the underground diaphragm wall is being constructed, the casing is arranged in the range of the wall body where the anchor rod must be provided in the diaphragm wall, so as to avoid chiseling the diaphragm wall during the construction of the anchor rod and meet the waterproof requirements of the basement.

Description

technical field [0001] The invention belongs to the field of foundation pit support for fixed buildings, and relates to a construction device for anchor rods passing through underground diaphragm walls, and can be widely used in foundation pit support projects using underground diaphragm walls combined with anchor rods. Background technique [0002] With the acceleration of urbanization in our country, the underground construction area is also increasing, the excavation depth is deepening, and the foundation pit support method is constantly innovating. For example, in soft soil areas, the excavation depth exceeds 12 meters. The relatively cheap "two walls in one" underground diaphragm wall is adopted; in areas with good soil quality, the foundation pit support scheme of bored piles combined with anchors is generally adopted, and anchors are used as the horizontal support system, which has great economic advantages. In the foundation pit engineering, if the support design sch...

AI Technical Summary

Problems solved by technology

The drilling process of the underground diaphragm wall is not only time-consuming and laborious, but also a kind of damage to the wall, which will affect the force of the underground diaphragm wall in the normal use stage in the future, and there are engineering safety hazards. Moreover, the underground diaphragm wall is used as the outer wall of the basement. After the hole, the hole area becomes the waterproof weak point of the underground continuous wall, which causes the hidden danger of water leakage in the basement during normal use

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