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A snap-ring flange connection device for assembled inner support of foundation pit

A connecting device and prefabricated technology, which is used in infrastructure engineering, excavation, construction, etc., to achieve the effect of speeding up assembly, saving erection time, and reducing deformation of foundation pits

Inactive Publication Date: 2018-08-28
BEIJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the support assembly technology in the existing internal support type foundation pit support engineering, the present invention provides a snap ring flange connection device for the foundation pit assembly type internal support, which can effectively solve the problem between support components in the foundation pit. The problem of reliability and convenience of connection

Method used

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  • A snap-ring flange connection device for assembled inner support of foundation pit
  • A snap-ring flange connection device for assembled inner support of foundation pit
  • A snap-ring flange connection device for assembled inner support of foundation pit

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Embodiment Construction

[0031] The installation steps of the present invention and the principle of action between the components are as follows:

[0032] Firstly, one surface of the bevel flange (1) is fixed to the end part (4) of the support member, and the other surface is closely attached to the surface (1) of the other bevel flange.

[0033] Then, a piece of rubber pad is hooped on the groove flange (1) to avoid stress concentration on the contact surface of the groove flange (1) and the snap ring type splint (2), and prevent surface wear caused by rigid contact.

[0034] Then, buckle the two grooved flanges (1) along the ring direction with a snap ring splint (2). The bevel angle of the bevel flange (1) is equal to the inner angle of the groove of the clasp type splint, and the two are closely attached and extruded on the contact surface, thereby producing the effect of fastening and strengthening.

[0035] Finally, the fastener (3) penetrates the bolt hole (10) of the snap ring splint (2), pu...

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Abstract

The invention relates to a snap ring type flanging connecting device for foundation pit assembly type internal bracings and belongs to the technical field of foundation pit internal bracing type supports. The device is located at the connecting portion between two foundation pit internal bracing components and is a steel structure assembly composed of two groove flanges, two snap ring type clamping plates and fasteners; one surface of one groove flange is fixed to the end of the corresponding bracing component, the other surface of the groove flange is closely attached to the surface of the other groove flange in an abutting mode, the two groove flanges are buckled through the snap ring type clamping plates, the two snap ring type clamping plates are locked through the fasteners to prevent the snap ring type clamping plates from getting loose outwards and falling off, and therefore the device forms a stable whole. According to the device, there is no need or a little need for bolt fastening operation, the splicing speed of a foundation pit assembly type internal bracing structure is increased, and foundation pit deformation caused by insufficient supports during erection of the internal bracings is reduced; the bending moment at the connecting point acts on the groove flanges and the snap ring type clamping plates to generate shear force, the shear surface is continuous and large in area without stress concentration, and the structure is reasonable and reliable.

Description

technical field [0001] The invention relates to a snap-ring flange connection device for an assembled inner support of a foundation pit, in particular to a connection form of an inner support member that is stable, reliable, and convenient for disassembly and assembly, and belongs to the technical field of inner support for foundation pits. Background technique [0002] Internal support structure is a commonly used support form for foundation pit support, mainly including steel pipe support, section steel support, concrete support and steel pipe concrete support and other types. Under the guidance of the concept of low-carbon environmental protection and green construction, prefabricated support structures such as steel support, precast concrete support and steel pipe concrete support are increasingly favored by foundation pit support projects. For prefabricated internal support structures, the connection nodes between components are the key parts that affect the reliability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
CPCE02D17/04E02D2600/20
Inventor 张明聚郭雪源马栋黄立新王武现
Owner BEIJING UNIV OF TECH
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