Urban underground comprehensive steel pipe gallery

Abstract

The invention discloses an urban underground comprehensive steel pipe gallery which comprises box type pipe joints, wherein each box type pipe joint is formed by assembling unit plate sheets, and the box type pipe joints are assembled in the axial direction to form a box type pipe gallery; protrusions are arranged on the outer side and / or the inner side of each unit plate sheet, and openings are formed in the periphery of the cross section of each protrusion. Compared with a circular-section pipe gallery, the box type pipe gallery structure of the urban underground comprehensive steel pipe gallery increases the use ratio and the general net width and net height of the internal clearance, the height of the pipe gallery is significantly reduced under the condition of ensuring the same internal clearance space, and therefore the foundation excavation depth is decreased, and the civil engineering quantity is reduced; the bottom straight surface of the pipe gallery can be directly used as a pedestrian passage or a driving passage, so that the most important and the most difficult re-filling and the degree of compaction of a bottom wedge-shaped included angle when the circular-section pipe gallery is re-filled are achieved; the pipe gallery is in a semi-flexible structure, has a good anti-seismic property and good settlement resistant performance, can absorb the trace deformation, and is not easily crazed.

Description

technical field [0001] The invention discloses a pipeline, in particular to a steel urban underground comprehensive pipeline gallery. Background technique [0002] The applicant has been devoting himself to the research, application and infrastructure engineering of steel structures and steel-concrete combined structures. Patent No. 2015106007884 "Prefabricated steel-concrete composite steel pipe and its manufacturing method" has been applied for, patent No. 201510598743.8 "Prefabricated assembled steel-concrete combined pipe and its manufacturing method" and patent No. 201510600759.8 "Steel with spiral reinforcement ring - Concrete Composite Structure Pipeline and Its Manufacturing Method" invention patent, the pipe section in the above-mentioned patent is in the form of a circular section, when this pipe section form is applied to the urban underground comprehensive pipe gallery, there are the following disadvantages: [0003] ①. The inner bottom of the pipe gallery is cu...

AI Technical Summary

Problems solved by technology

[0003] ①. The inner bottom of the pipe gallery is curved, not flat, which is not conducive to the installation of pipe racks and pipelines at the bottom, and is not convenient for the passage of maintenance personnel and maintenance equipment. It is necessary to build a special platform at the bottom of the inner pipe gallery;

[0004] ②. The walls on both sides of the pipe gallery are also arc-shaped. It is necessary to make the joint surface of the load-bearing pipe frame and the wall into an arc shape with the same curvature, which increases the difficulty of processing and production, and is not conducive to the arrangement of pipe frames and pipelines;

[0005] ③. For integral circular cross-section pipes, there are difficulties in transportation, and the pipe diameter is greater than 3.5 meters or exceeds the limit;

[0006] ④. There are also transportation disadvantages for the segmented circular arc section. Because the plates are arc-shaped structures, when stacked and transported, the higher the stack, the more the plates are stressed during the transportation process, which is easy to cause the plates The radian deformation cannot be estimated, and in serious cases, it cannot be docked and assembled when it is transported to the site, and rework is required;

[0007] ⑤. The circular arc plate is relatively flat, and its arc degree, arc length, etc. are difficult to process and control, and the processing cost is high;

[0011] ⑨. The above-mentioned invention patents all apply the joint stress effect of pipe and soil. This principle needs to be realized by the joint deformation of the pipe and the surrounding soil. However, for the urban underground comprehensive pipe gallery, the deformation of the pipe will cause the deformation of the pipe rack and pipeline inside the pipe gallery or damage, which is absolutely not allowed in the urban comprehensive utility corridor;

[0012] ⑩. More importantly, according to the standard of the Ministry of Housing and Urban-Rural Development "Technical Specifications for Urban Comprehensive Pipe Gallery Engineering" in 2015, the circular pipe gallery has a low space utilization rate compared with the box-shaped pipe gallery, and the circular pipe gallery only uses circular pipes. There is a rectangular clear space in the gallery, which is why the height of the circular pipe gallery is higher than that of the box-shaped pipe gallery, and it needs to be buried deeper, which increases the excavation depth and engineering volume of the foundation.

[0013] At present, most of the urban underground comprehensive pipe corridors are made of reinforced concrete. Its structural forms include on-site integral pouring and prefabricated assembly. , is not conducive to environmental protection, there are many joints in the reinforced concrete structure, generally one joint every 2 to 5 meters, the sealing of the joints is a difficult problem, the construction technology requirements are high, and the construction period is long

It is easy to crack and leak during use, and the maintenance cost is high

Among them, in the rectangular pipe gallery, the walls on both sides must not only bear the upper load, but also bear the lateral load of the side soil layer, and the top plate directly bears the dynamic load and static load, but because only ordinary Advanced reinforced concrete technology, in order to resist bending moment and disturbance, enhance its bearing capacity and prevent instability, the walls need to be set very thick and the cost is extremely high

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