Construction Method of Secondary Lining of Steel-Concrete Composite Pipe Joint Jacking Channel

Abstract

The invention provides a construction method for the secondary inner lining of the steel-concrete composite pipe joint jacking channel, which comprises the following steps: Step 1, carrying out the jacking construction of the steel pipe joint, the outermost compartment of the steel pipe joint and the corresponding The compartments on the adjacent steel pipe sections are formed with intervals; step 2, after pouring the inner liner and the bottom plate on the side of the steel pipe section at the bottom of the passage, laying trolley tracks, and on the trolley tracks Set up a moving trolley; step 3, the trolley is equipped with formwork and concrete pouring equipment, and concrete is poured into the compartment through the window on the formwork; step 4, concrete is poured at the interval. By setting pouring concrete between adjacent steel pipe sections, the concrete layer at this interval is thicker, which can reduce the transverse stress between each compartment while reducing the influence of thermal expansion of steel pipe sections and reducing the possibility of water seepage.

Description

technical field [0001] The invention relates to a construction method for a secondary inner lining of a steel-concrete composite pipe joint pipe jacking channel. Background technique [0002] At present, due to the rapid development of urban development, the scale of urban subway construction is also increasing. Especially in the central urban area, due to the constraints of surrounding buildings, underground pipelines, and ground transportation, the newly implemented rail transit stations have an increasing impact on the surrounding environment, while traditional open-cut construction methods and techniques have been unable to meet the needs of modern cities for underground construction. High standard requirements for station construction. The pipe jacking method is more suitable for the situation where the city center is restricted by pipelines and buildings. It has the characteristics of diversified cross-section forms, high cross-section utilization rate, few structural...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing steel-concrete composite pipe joint pipe jacking channel secondary lining construction method after parallel pouring due to the defects of lateral stress differences and the joints of steel pipe joints are easy to crack, to provide a Construction method for secondary lining of steel-concrete composite pipe joint pipe jacking channel with more stable lining structure after construction

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