What are the design principles and construction techniques of rectangular pipe jacking mold?

The rectangular pipe jacking mold is a special mold equipment used in the construction of underground drainage systems. It is mainly used to make rectangular pipe jacking. Rectangular jacking pipe is a pipe with a rectangular cross-section. It is mostly used in drainage systems in subways, tunnels, bridges and other projects. The design principles and construction techniques of the rectangular pipe jacking mold are the key to ensuring the quality, stability and construction efficiency of the pipe jacking.

First of all, the design principles of the rectangular pipe jacking mold need to consider the following aspects:

1. Cross-sectional design: The cross-sectional design of the rectangular pipe jacking mold needs to determine the width, height and other parameters of the pipe jacking according to actual engineering requirements. Factors such as drainage capacity, strength requirements, and construction convenience need to be taken into consideration during design.

2. Material selection: The material used to make the rectangular pipe jacking mold needs to have a certain degree of strength and wear resistance to ensure that the mold can withstand the pressure and wear during construction. Common mold materials include steel plates, fiberboards, etc.

3. Mold structure: The structural design of the rectangular pipe jacking mold needs to be simple, easy to disassemble and assemble, and can ensure the stability and accuracy of the mold to ensure accurate dimensions of the pipe jacking.

4. Support structure: In order to ensure the stability of the mold and the safety of pipe jacking construction, the rectangular pipe jacking mold needs to be equipped with appropriate support structures and fixing devices to prevent the mold from shifting or tilting during use.

Secondly, the construction skills of rectangular pipe jacking mold include the following aspects:

1. Mold installation: Install the rectangular pipe jacking mold correctly at the construction site, and adjust and fix it to ensure the stability of the mold and the correct cross-sectional size.

2. Concrete pouring: After the mold installation is completed, concrete pouring is carried out according to the design requirements. What needs to be paid attention to is to ensure that the concrete is poured evenly and densely to prevent leakage and voids in the concrete.

3. Mold disassembly: After the concrete solidifies, dismantle the rectangular pipe jacking mold. What needs to be paid attention to is to avoid damage to the mold and deformation of the jacking pipe. At the same time, it should be disassembled reasonably according to the structural design of the mold in order to make the next section of rectangular jacking pipe.

4. Follow-up processing: After the rectangular pipe jacking is completed, a series of follow-up processing work is required, including early demoulding, trimming, waterproofing, reinforcement, etc. These tasks can improve the quality and service life of the jacking pipe.

To sum up, the design principles and construction techniques of rectangular pipe jacking molds are the key to ensuring the quality and construction efficiency of rectangular pipe jacking. Design principles include cross-sectional design, material selection, mold structure and support structure; construction skills include mold installation, concrete pouring, mold disassembly and subsequent processing. Only with the correct application of design principles and construction techniques can the rectangular pipe jacking mold play its due role and ensure the smooth progress of the project.