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Construction method for lifting-type bridge pier scaffold

A scaffolding and lifting technology, which is applied to bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of high hydrological address requirements, poor safety and reliability, waste of materials, etc., to achieve protection measures in place, less equipment investment, and materials low loss effect

Active Publication Date: 2018-10-26
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the construction of bridge piers, external scaffolding, that is, floor-standing scaffolding, is widely used as an operating platform. The height of the pier depends on the height of its erection. This not only wastes materials, is time-consuming and labor-intensive, but also requires high hydrological conditions. When the pier is high, its safety and reliability are poor

Method used

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  • Construction method for lifting-type bridge pier scaffold
  • Construction method for lifting-type bridge pier scaffold
  • Construction method for lifting-type bridge pier scaffold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present invention is realized through the following technical solutions, and the present invention is realized through the following technical solutions: the lifting type bridge pier scaffolding construction method, specifically comprising the following steps:

[0038] Step S1: preparatory work before construction;

[0039] Step S2: installation of main girders and longitudinal beams;

[0040] Step S3: installation of steel pipe scaffolding;

[0041] Step S4: pier body construction;

[0042] Step S5: Construction of upper and lower pedestrian passages;

[0043] Step S6: Scaffold lifting;

[0044] Step S7: Scaffold removal.

[0045] It should be noted that, through the above improvements,

[0046] Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Embodiment 2

[0048] This embodiment is further optimized on the basis of the above embodiments, and the step S1 specifically includes the following steps:

[0049] Step S11: Scaffold design and force check calculation; specifically refers to: load value calculation, scaffold bearing capacity check calculation, longitudinal beam check calculation, beam check calculation, main girder check calculation, steel bar check calculation;

[0050] Load value calculation:

[0051] 1) Dead load

[0052] The pole is made of Φ48 steel pipe with a wall thickness of 3.5mm; the steel pipe’s 3.14*(0.024 2 -0.0225 2 )*7850*10=17.2N / m

[0053] The self-weight of the pole is:

[0054] q 立 =12*(9+3)*2*2*17.2=9.91kN;

[0055] The crossbar has its own weight, and the crossbar has 7 floors.

[0056] The self-weight of the crossbar is:

[0057] q 横 =7*(7.6+1.7)*2*2*17.2=8.81kN;

[0058] 90cm long horizontal short rod self-weight:

[0059] q 横短 =6*0.9*17.2*60=5.57kN;

[0060] Self-weight of connecting r...

Embodiment 3

[0126] This embodiment is further optimized on the basis of the above embodiments. The step S2 specifically means that the top surface of the cap platform that has been constructed is used as the base surface, and the main beam, cross beam and longitudinal beam are installed; specifically, the following steps are included:

[0127] Step S21: the two symmetrical sides of the base surface are connected to the main girder through steel rods; the main girder is installed on the steel rods.

[0128] Step S22: Arranging successively connected beams around the base surface, the main beam is used to support the beams; two beams on the same side are parallel to each other and connected by rebar.

[0129] It should be noted that through the above improvements, during installation, the welding seam between the main beam and the cross beam shall be welded by skilled welders in accordance with the requirements of relevant specifications. The steel bars of Φ25 are connected.

[0130] Other...

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Abstract

The invention discloses a construction method for a lifting-type bridge pier scaffold. The construction method specifically comprises the following steps of S1, preparation work before construction; S2, mount of main beams and longitudinal crossbeams; S3, mounting of the steel pipe scaffold; S4, pier body construction; S5, construction of an upper pedestrian passageway and a lower pedestrian passageway; S6, scaffold lifting; and S7, scaffold dismantling. The construction method has the beneficial effects that the equipment input is less, mounting and demounting are convenient, and the construction method is not affected by hydrogeology; the material loss is small, and the cost can be saved; and protective measures are carried out in place, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of erecting bridge construction scaffolds, in particular to a construction method for lifting bridge pier scaffolds. Background technique [0002] With the continuous development of building construction technology, there are more and more types of scaffolding. In terms of construction materials, there are bamboo, wood and steel pipe scaffolding; steel pipe scaffolding is divided into fastener type, bowl buckle type, door type, and tool type; according to the number of erected pole rows, it can be divided into single row frame and double row frame racks and full hall racks. According to the purpose of erection, it can be divided into masonry frame and decoration frame; according to the position of erection, it can be divided into external scaffolding and internal scaffolding. In the construction of bridge piers, external scaffolding, that is, floor-standing scaffolding, is widely used as an operating platf...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 苏春生汤振亚梁朋刚孙百峰张庆
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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