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System and method for pushing, deflection correcting and bracing replacement of prefabricated underground passage structure

An underground passage and prefabricated assembly technology, which is applied to underwater structures, infrastructure engineering, buildings, etc., can solve the problems that cannot be adjusted actively, and the jacking construction process cannot control or adjust the linear effect of jacking, so as to achieve optimization The effect of jacking construction technology, ensuring project construction quality, and improving assembly efficiency

Active Publication Date: 2019-05-21
SHANGHAI CONSTRUCTION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that the existing force-transmitting slab structure cannot be actively adjusted according to the stress characteristics of the enclosure structure and the deformation of the underground passage structure, and the existing jacking construction technology cannot control or adjust the linear effect of the jacking

Method used

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  • System and method for pushing, deflection correcting and bracing replacement of prefabricated underground passage structure
  • System and method for pushing, deflection correcting and bracing replacement of prefabricated underground passage structure
  • System and method for pushing, deflection correcting and bracing replacement of prefabricated underground passage structure

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Embodiment 1

[0036] Embodiment 1: The underground passage structure of this embodiment is a double-hole underground passage with a rectangular longitudinal section. In order to facilitate the prefabrication of the underground passage structure, the underground passage structure is vertically divided into several sections before construction. The section is horizontally divided into the upper section of the underground passage and the lower section 10 of the underground passage. The upper section of the multi-section underground passage and the lower section 10 of the underground passage are respectively prefabricated according to the design requirements. The lower section 10 of the passage is pushed into place and assembled into the lower structure of the underground passage. Combine below Figure 5 Explain that the prefabricated and assembled underpass structure jacking correction and support change system of the present invention includes a lifting bracket 31 and an axial force adjusting d...

Embodiment 2

[0040] Embodiment 2: the following combination Figure 3 to Figure 8 To illustrate the method of pushing and correcting deviation and changing support of the prefabricated underground passage structure of the present invention, the specific construction steps are as follows:

[0041] S101: Such as image 3 As shown, the construction of the enclosure structure 1 of the underground passage is carried out in batches of earth excavation and support structure construction, and the reinforced concrete cushion layer 4 is poured; specifically, the construction of the enclosure structure 1 of the underground passage is carried out first, and the first batch Earthwork excavation, and construction of the first reinforced concrete support 2, after the first reinforced concrete support 2 reaches the strength required by the design, the second batch of earthwork excavations, and the second reinforced concrete support 3 after completion; After the second reinforced concrete support 3 is formed,...

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Abstract

The invention discloses a pushing correcting support changing system and method for a prefabricated assembled underground channel structure. The problem that an existing force transfer plate belt structure cannot conduct initiative adjustment according to the stress characteristic of an envelope structure and deformation of the underground channel structure, and consequently pushing linearity cannot be controlled or adjusted is solved. The pushing correcting support changing system comprises a lifting support, an axial force adjusting device and an oblique adjusting mechanism, wherein the lifting support and the axial force adjusting device are arranged between the envelope structure and underground channel lower structure, and the oblique adjusting mechanism is supported between the side wall of the underground channel lower structure and the bottom plate. A jacking system is used for sequentially jacking multiple underground channel lower sections in place, and therefore the underground channel lower structure is spliced. The pushing correcting support changing system is installed on the underground channel lower sections so that the two ends of the axial force adjusting device can abut against the envelope structures and the underground channel lower sections; and the oblique adjusting mechanism is installed between the side wall of the underground channel lower structure and the bottom plate, and then support changing axial force adjusting is conducted according to deformation and stress characteristics of the envelope structures and pushing linearity factors.

Description

Technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a jacking correction system and method for prefabricated and assembled underground passage structures. Background technique [0002] With the increasingly serious traffic congestion in large and medium-sized cities, more and more three-dimensional reconstruction projects of transportation infrastructure will be ushered in. However, the construction of underground passages in densely populated urban core areas will inevitably face the narrow construction site and environment. Problems such as harsh protection requirements. [0003] Excavation of the existing underground passage foundation pit often adopts the form of enclosure structure and multiple reinforced concrete supports. During the construction of the underground passage structure, the multiple reinforced concrete supports are gradually removed from bottom to top until the construction of the undergro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/045
CPCE02D29/045
Inventor 吴小建张阿晋王新新陈峰军王红卫周泉吉程子聪孙廉威
Owner SHANGHAI CONSTRUCTION GROUP