CN103321153B - A kind of construction method of Mid and minor spans channel girder - Google Patents

A kind of construction method of Mid and minor spans channel girder Download PDF

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Publication number
CN103321153B
CN103321153B CN201310244857.3A CN201310244857A CN103321153B CN 103321153 B CN103321153 B CN 103321153B CN 201310244857 A CN201310244857 A CN 201310244857A CN 103321153 B CN103321153 B CN 103321153B
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prefabricated
construction
transverse reinforcement
kinds
joint
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CN103321153A (en
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周道传
董作超
潘志宏
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Zhenjiang Construction Group Co., Ltd.
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Jiangsu University of Science and Technology
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Abstract

The invention discloses a kind of construction method of Mid and minor spans channel girder.The method is: first longitudinally channel beam body is divided into three kinds of components by perps, is the integrated member of left longeron and left web respectively, base plate member, the integrated member of right vertical beam and right web.In bridge substructure cast in situs, prefabricated above-mentioned three kinds of components in prefabricated place simultaneously.Reserve transverse reinforcement joint in the bottom of prefabricated units, reserve transverse reinforcement joint in the left and right sides of base plate.After substructure construction maintenance terminates, prefabricated units are transported to job site, assigned address is lifted into by lifting appliance, site layout project longitudinal reinforcement, carry out colligation overlap joint with reserved transverse reinforcement joint or weld, after-pouring junction concrete, carry out the concrete construction and maintenance of junction, form the agent structure of channel girder.The present invention overcomes the defect of prior art, at prefabricated place prefabricated units, can simplify working procedure, accelerating construction progress, improves efficiency of construction, reduces operating expenses.

Description

A kind of construction method of Mid and minor spans channel girder
Technical field
The invention belongs to technical field of civil engineering, relate to a kind of method for bridge construction, more particularly relate to a kind of construction method of Mid and minor spans channel girder.
Background technology
The construction of existing channel girder mainly adopts the construction method of placing on the spot (or being called for short " cast-in-place "), this construction method is built after maintenance completes at bridge substructure, carry out building of superstructure again, master operation comprises: set up support and template at the construction field (site), reinforcing bar bend shaping and weld, the welding of cage of reinforcement, install and fix, concrete mixing, transport, build, vibrate, maintenance and form removal, support removing work etc.Existing construction method working procedure is many, construction period is long, the erection error of support and template can have an impact to construction quality, construction quality is subject to the such environmental effects such as the temperature humidity of job site large, the concrete shrinkage and creep effect of cast in situs is obvious, construction quality is wayward, and efficiency of construction is not high.Patent of invention ZL02137151.2 discloses a kind of construction method of longitudinally assembling prefabricated subsection of channel beam, this construction method be by channel beam along bridge to being divided into a section channel beam with horizontal perps, carry out prefabricate, again a section prefabricated channel beam is carried out assembled, then stretch-draw longitudinal prestressing muscle, form channel beam agent structure, the advantage of this patent of invention have employed prefabricated subsection channel beam, avoid the defect of cast-in-place method on the spot, but, this patent of invention is only applicable to the channel girder adopting longitudinal prestressing muscle, to Mid and minor spans channel girder, adopt plain bars just can meet the requirement of force and deformation, without the need to adopting longitudinal prestressing reinforcing bar, so the construction method of this patent of invention cannot be adopted to construct to Mid and minor spans channel change bridge.
Summary of the invention
The object of the invention is to the defect overcoming prior art, a kind of construction method of Mid and minor spans channel girder is provided.
In order to achieve the above object, technical scheme of the present invention is:
A construction method for Mid and minor spans channel girder, the step comprised is: one, longitudinally channel girder is divided into three kinds of components by perps, i.e. the integrated member of left longeron and left web, the integrated member of base plate member and right vertical beam and right web; Two, cast in situs channel girder substructure, three kinds of components simultaneously described in prefabricated place prefabrication step one; And be reserved with transverse reinforcement joint by design specifications respectively in prefabricated left longeron and the bottom of integrated member of left web and the bottom of the integrated member of right vertical beam and right web, be reserved with transverse reinforcement joint on the limit, the left and right sides of base plate by design specifications; Three, prefabricated three kinds of components are transported to job site, utilize lifting appliance to be lifted into assigned address, the longitudinal reinforcement that site layout project some is connected with reserved transverse reinforcement joint, carry out colligation overlap joint with reserved transverse reinforcement joint or weld; Four, build junction concrete, butt joint section concrete carries out construction and maintenance, forms the agent structure of channel girder.
Wherein said transverse reinforcement joint is divided into two-layer up and down; The end shape of described transverse reinforcement joint is hook solid.
The height of the transverse reinforcement joint that the transverse reinforcement joint that described base plate member is reserved with and described longeron and the bottom of integrated member of left web and the bottom of the integrated member of right vertical beam and right web are reserved with is equal, horizontal level stagger in order and near.
The present invention compared with prior art has following advantage and beneficial effect:
(1) the top and the bottom structure of bridge can parallel construction, shortens the construction period;
(2) channel beam is broken down into three kinds of components and carries out prefabricated, simplifies job site action, accelerating construction progress;
(3) prefabricated units are conducive to heavy industrialization manufacture, and the construction quality of component, not by the impact of construction site condition environment, has higher making quality in prefabricated place;
(4) job site only needs the erection concrete support of junction and template, simplifies working procedure, has saved construction cost;
(5) be conducive to tissue mechanicalization construction, fully ensure construction safety.
Accompanying drawing explanation
Fig. 1 is three kinds of prefabricated units schematic perspective views of the present invention.
Fig. 2 is component connector reinforcement placement schematic diagram of the present invention.
Fig. 3 is the A-A cross section view of Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of construction method of Mid and minor spans channel girder, first longitudinally channel girder is divided into three kinds of components by perps, and these three kinds of components are the integrated member 1 of left longeron and left web respectively, base plate member 2, the integrated member 3 of right vertical beam and right web.While bridge substructure cast in situs, prefabricated three kinds of described components in prefabricated place.
The work of prefabricated units comprises support and template construct is in place, the fabrication and installation of cage of reinforcement, and reserved lifting clasp and transverse reinforcement joint, concreting also carries out maintenance.
Transverse reinforcement joint is reserved by design specifications in the bottom of prefabricated units 1 and component 3, as shown in Figures 2 and 3, transverse reinforcement is divided into two-layer up and down, on the limit, the left and right sides of base plate 2 by design specifications also reserved transverse reinforcement joint, transverse reinforcement is divided into two-layer up and down, identical with the transverse reinforcement height of component 3 with component 1, horizontal level staggers in order and hook solid is made by " highway reinforced concrete and prestressed reinforced concrete bridge contain design specifications " (JTGD62-2004) requirement in end near, transverse reinforcement.
After bridge substructure construction and maintenance terminates, prefabricated three kinds of components are transported to job site, three kinds of prefabricated units 1 of lifting channel girder superstructure, 2,3, lifting sequence is first lift base plate member 2, after installation in position, lifting components 1 or 3 again, the reserved transverse reinforcement order of the reserved transverse reinforcement of component 1 or component 3 and base plate member 2 is staggered and near, finally lift a remaining component again, and the reserved transverse reinforcement order of reserved transverse reinforcement and base plate member 2 is staggered and near.As shown in Fig. 2, Fig. 3.
Site layout project longitudinal reinforcement, longitudinal reinforcement is divided into two-layer up and down, longitudinal reinforcement is arranged in inside reserved transverse reinforcement joint, in longitudinal reinforcement and transverse reinforcement lap-joint, longitudinal reinforcement carries out colligation overlap joint with two reserved transverse reinforcement joints or welds, and forms the double layer bar that junction is crisscross.
The erection concrete support of junction and template, build junction concrete, as shown in the dotted line scope in Fig. 2, carry out scene and vibrate, carry out construction and maintenance to concreting.Junction concrete curing terminates rear striking and template, constructs complete.

Claims (1)

1. a construction method for Mid and minor spans channel girder, is characterized in that the method comprises the steps:
Step one, along channel girder longitudinal perps, channel girder being divided into three kinds of components, is the integrated member (1) of left longeron and left web respectively, base plate member (2), the integrated member (3) of right vertical beam and right web;
Step 2, job site build bridge substructure, three kinds of components simultaneously described in the integral prefabricated step one in prefabricated place, and be reserved with two-layer up and down respectively by design specifications in left longeron and the bottom of integrated member (1) of left web and the bottom of the integrated member (3) of right vertical beam and right web, end shape is the flat seam transverse reinforcement joint of hook solid, be reserved with two-layer up and down respectively by design specifications on the limit, the left and right sides of base plate member (2), end shape is the flat seam transverse reinforcement joint of hook solid; The height of wherein said transverse reinforcement joint is equal, horizontal level stagger in order and near;
Step 3, prefabricated for step 2 three kinds of components are transported to job site, adopt lifting appliance to lift by crane installation three kinds of components successively to assigned address by the working procedure of main beam member after first base plate, site layout project also adopts the method for colligation overlap joint or welding to be connected by the longitudinal reinforcement that some are connected with reserved transverse reinforcement joint respectively;
Step 4, build flat seam junction concrete, carry out the concrete construction and maintenance of junction.
CN201310244857.3A 2013-06-19 2013-06-19 A kind of construction method of Mid and minor spans channel girder Active CN103321153B (en)

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CN103321153B true CN103321153B (en) 2016-01-20

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CN104674650B (en) * 2015-02-16 2016-05-25 西安公路研究院 Based on bridge floor seamless process retractor device and the construction method thereof of the type transverse joint plate of putting more energy into
CN107401121B (en) * 2017-07-24 2019-06-18 中交第二航务工程局有限公司 A kind of beam prefabricated cast-in-place design and construction method of U
CN110700103B (en) * 2019-10-16 2022-04-08 中铁工程服务有限公司 Construction method of continuous composite beam
CN111335166A (en) * 2020-03-09 2020-06-26 浙江交工集团股份有限公司 Construction method using self-bearing structure as temporary support
CN112593482B (en) * 2020-12-04 2022-07-12 邹宇 Prefabricated assembled concrete diaphragm structure and construction method

Citations (6)

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Publication number Priority date Publication date Assignee Title
CN1485501A (en) * 2002-09-26 2004-03-31 上海市隧道工程轨道交通设计研究院 Construction method for prefabricating ballast slab of channel beam partitionally
CN1485499A (en) * 2002-09-26 2004-03-31 上海市隧道工程轨道交通设计研究院 Small setback type joining mode for channel beam
CN1485500A (en) * 2002-09-26 2004-03-31 上海市隧道工程轨道交通设计研究院 Rabbet type joining mode for channel beam
KR20070002361A (en) * 2005-06-30 2007-01-05 주식회사 삼표 Bridge construction method optimized precast concrete deck slab for channel bridge
KR20090045825A (en) * 2007-11-02 2009-05-08 롯데건설 주식회사 With h-typed cross section member for channel bridge
EP2143843A2 (en) * 2008-07-09 2010-01-13 SSF Ingenieure GmbH Steel-concrete composite trough as bridgedeck and method for its production

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1485501A (en) * 2002-09-26 2004-03-31 上海市隧道工程轨道交通设计研究院 Construction method for prefabricating ballast slab of channel beam partitionally
CN1485499A (en) * 2002-09-26 2004-03-31 上海市隧道工程轨道交通设计研究院 Small setback type joining mode for channel beam
CN1485500A (en) * 2002-09-26 2004-03-31 上海市隧道工程轨道交通设计研究院 Rabbet type joining mode for channel beam
KR20070002361A (en) * 2005-06-30 2007-01-05 주식회사 삼표 Bridge construction method optimized precast concrete deck slab for channel bridge
KR20090045825A (en) * 2007-11-02 2009-05-08 롯데건설 주식회사 With h-typed cross section member for channel bridge
EP2143843A2 (en) * 2008-07-09 2010-01-13 SSF Ingenieure GmbH Steel-concrete composite trough as bridgedeck and method for its production

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Effective date of registration: 20190227

Address after: 212000 No. 17 Huangshan South Road, Zhenjiang City, Jiangsu Province

Patentee after: Zhenjiang Construction Group Co., Ltd.

Address before: No. 2, Mengxi Road, Zhenjiang, Jiangsu Province, Jiangsu

Patentee before: Jiangsu University of Science and Technology