Pushing device and method for improving horizontal bearing performance of low bearing platform

Abstract

The invention discloses a jacking device and a method for improving the horizontal bearing performance of a low bearing platform, belonging to the technical field of bridge engineering. The jacking device can squeeze the soil of the side wall of the low cap and refill the dense crushed stone concrete, which solves the problem that the foundation soil of the side wall of the low cap is loose and cannot be in close contact with the side wall of the cap and cannot provide high-level resistance Therefore, the purpose of significantly improving the horizontal bearing capacity of low caps is realized, and the safety reserve goal of improving the pile group foundation of low caps is achieved. After the soil is compressed, the device is reset by a reset device, and the main components can be taken out from the slot, so it can be reused, thereby significantly reducing the application cost of the pushing device. It provides an additional safety reserve for the large-scale low cap pile foundation of important projects, and makes it possible to consider the role of the low cap in the design process of the pile group foundation. Security applications play an important role.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and particularly relates to a jacking device and a method for improving the horizontal bearing performance of a low bearing platform. Background technique [0002] The pile group foundation is the most widely used foundation type in bridge engineering due to its advantages of simple principle, convenient construction and small settlement after construction. However, in addition to the vertical load transmitted from the upper part, the pile group foundation also bears a series of horizontal loads such as wind, vehicle braking, and earthquake. In the design process of the horizontal bearing capacity of the pile group foundation, whether the cap is buried in the foundation soil or not, the high cap is designed. In fact, since the interaction between the low-cap and the surrounding foundation soil can provide a certain degree of horizontal resistance, the above approach will make the desi...

AI Technical Summary

Problems solved by technology

In fact, since the interaction between the low cap and the surrounding foundation soil can provide a certain degree of horizontal resistance, the above approach will make the design of the low cap pile group conservative, resulting in a certain degree of waste

With the continuous deepening of practice and cognition, although the designers have realized that the foundation soil is beneficial to the force bearing of the low-cap pile group foundation, they have not taken further effective measures to improve the horizontal bearing performance of the low-cap

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