CN101649604B - Construction bracket of 1# block of inclined pull bridge and constructing method thereof - Google Patents

Construction bracket of 1# block of inclined pull bridge and constructing method thereof Download PDF

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Publication number
CN101649604B
CN101649604B CN2009101047201A CN200910104720A CN101649604B CN 101649604 B CN101649604 B CN 101649604B CN 2009101047201 A CN2009101047201 A CN 2009101047201A CN 200910104720 A CN200910104720 A CN 200910104720A CN 101649604 B CN101649604 B CN 101649604B
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China
Prior art keywords
distribution beam
anchor
block
bei leiliang
wedge
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Expired - Fee Related
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CN2009101047201A
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Chinese (zh)
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CN101649604A (en
Inventor
冉兵
黄洪盛
罗磊
周熙
郑策
欧琼
周杨
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First Engineering Co Ltd of China Railway No 8 Engineering Group Co Ltd
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First Engineering Co Ltd of China Railway No 8 Engineering Group Co Ltd
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Abstract

The invention relates to a construction bracket of a 1# block of an inclined pull bridge, comprising Bailey beams, I-shaped steel distribution beams and WJD bowl buckles, wherein the Bailey beams are connected on a lower pylon, the I-shaped steel distribution beams are arranged on the two Bailey beams, and the WJD bowl buckles are arranged on the two I-shaped steel distribution beams. The construction bracket is characterized in that one end of the two Bailey beams far away from the lower pylon is respectively provided with a front supporting point distribution beam; one end of four inclined pull ropes and four steel twisted wires is respectively connected with a wedge-shaped block by the front supporting point distribution beams, the other end is anchored on an upper transverse beam, and an anchor point is provided with a lifting jack; and the end of the two Bailey beams, close to the lower pylon, is respectively provided with a back hanging point distribution beam. The invention also relates to a method for constructing the construction bracket of the 1# block of the inclined pull bridge. The invention has the following advantages of simple construction, easy operation, good stability of the bracket and low manufacturing cost; under an environmental condition that the bottom surface of a beam body of the inclined pull bridge is a water area or has a farther distance away from the ground, the 1# block can be successfully cast in situ, and the quality of concrete can be ensured.

Description

A kind of construction bracket of 1 # block of inclined pull bridge and building method thereof
Technical field
Building support and the building method thereof that the present invention relates to are specially a kind of construction bracket of 1 # block of inclined pull bridge and building method thereof.
Background technology
The girder piece of cable stayed bridge king-tower upper end is called the 0# piece, and the girder piece that is connected with 0# piece two ends is called the 1# piece respectively.The construction of cable-stayed bridge main-beam 1# piece, when the 0# piece did not have enough length that Hanging Basket is installed, general solution has two kinds: a kind of was to set up floor stand from ground, set up template again on floor stand, laid reinforcing bar, finished the 1# block concrete and built.The available condition of the method is: require the ground of 1# piece correspondence to need more than water level, and ground and beam height difference are little.But the method timbering material consumption is surprising, has increased project cost.Another kind method is the pre-buried multilayer gusset plate of tower pier under king-tower, forms an angle-table bracket form, and set up template on angle-table bracket, and the laying reinforcing bar is finished the 0# piece and the 1# block concrete is built.Though the method does not have extraneous other condition restriction, need a large amount of timbering materials equally, increased project cost equally.Yet, in bridge construction, run into the big and situation of cushion cap below water level of main pylon pier cushion cap end face and the girder discrepancy in elevation through regular meeting.When running into such condition restriction, reduce project cost, shorten the construction period, just must take new job practices.
Summary of the invention
The purpose of this invention is to provide a kind of construction bracket of 1 # block of inclined pull bridge, its structure is simple and clear, reliable and stable, and is with low cost, and easy construction is specially adapted to the 0# block length and is not enough to the installation Hanging Basket, and the 1# piece construction when higher of beam body and ground relative relief.
A kind of construction bracket of 1 # block of inclined pull bridge of the present invention, comprise symmetry be connected the Bei Leiliang on both sides before and after the lower king-post strut top, respectively be laid on i iron distribution beam on the two shellfish thunder beams, be laid on WJD bowl button on the two i iron distribution beam respectively, it is characterized in that:
End away from lower king-post strut below two Bei Leiliang is respectively equipped with the front fulcrum distribution beam; One end of four skew cables passes respectively that the front fulcrum distribution beam is connected with wedge, other end anchor on the top rail of upper king-post strut 18, and one jack is set at the anchor point place; One end of four steel strand passes respectively that the front fulcrum distribution beam is connected with wedge, other end anchor on the anchor block that is located on the top rail, and another jack is set at the anchor point place;
End near lower king-post strut below two Bei Leiliang is respectively equipped with the back hanging point distribution beam, and this back hanging point distribution beam is connected with the lower end of suspension rod, and the upper end of this suspension rod is passed the pre-buried via hole that is located on the 0# piece and is connected with the suspension rod anchor beam, to strengthen the rear fulcrum of this support.
Described a kind of construction bracket of 1 # block of inclined pull bridge, its described Bei Leiliang is connected with pre-buried cloudy head in being located at lower king-post strut by bearing pin, forms a fulcrum; Front fulcrum distribution beam and wedge that suspension cable and steel strand pass below the Bei Leiliang form another fulcrum, thereby make shellfish Lei Liang two ends form the stabilising system of two fulcrums.
Bei Leiliang (being assembled by shellfish thunder beam sheet), WJD bowl button support, i iron, jack that this support adopts are frock general in the construction work and equipment, build efficient and convenient, reliable and stable, with low cost.
The present invention also provides a kind of building method of construction bracket of 1 # block of inclined pull bridge, this method is easy to operation, safety factor is higher, can be the waters in cable stayed bridge beam body bottom surface or under the higher ambient conditions, carry out the cast-in-place of 1# piece smoothly, guarantee quality of concrete apart from ground.
The building method of a kind of construction bracket of 1 # block of inclined pull bridge of the present invention, its step is as follows:
The first step: when lower king-post strut is constructed, pre-buried cloudy head is embedded in the concrete, when the 0# piece is constructed, the pre-buried via hole that default suspension rod passes;
Second step: assembly unit Bei Leiliang on pre-buried cloudy head, node connects with bearing pin, after the installation of shellfish thunder beam, away from an end of lower king-post strut the front fulcrum distribution beam that is welded with wedge is installed at Bei Leiliang;
The 3rd step: with an end of four skew cables pass respectively that the front fulcrum distribution beam is connected with wedge, other end anchor on the top rail of upper king-post strut, and one jack is set at the anchor point place; One end of four steel strand passes respectively that the front fulcrum distribution beam is connected with wedge, other end anchor on the anchor block that is located on the top rail, and another jack is set at the anchor point place; Then, tighten up suspension cable, tighten up steel strand, satisfy the requirement of support Design absolute altitude up to Bei Leiliang with another jack with jack;
The 4th step: lay i iron on Bei Leiliang, set up WJD bowl button support on i iron, WJD bowl button support is made up of subiculum, column, pop-up, cross bar, and its erection method is conventional erection method.
The 5th step: the suspension rod anchor beam is installed on the 0# piece of having built, the back hanging point distribution beam is installed below Bei Leiliang, and the pre-buried via hole that passes on the 0# piece with suspension rod connects both, and tighten up suspension rod;
The 6th step: on WJD bowl button support, masterplate, assembling reinforcement are installed and build the 1# block concrete.
The present invention compares with prior art and has the following advantages:
(1) support is made up of former and later two fulcrums, is not cantilever support, simple structure, and easy operating, support stability is good;
(2) supporting structure is simple, and material usage is few, and most of material is the existing material of universal building material and bridge construction, and is cheap.
(3) building method is simple and easy to do, safety factor is higher, can be the waters in cable stayed bridge beam body bottom surface or under the higher ambient conditions, carries out the cast-in-place of 1# piece apart from ground smoothly, guarantees quality of concrete.
Description of drawings
Fig. 1 is the structural representation of support of the present invention.
Fig. 2 is the I-I view of Fig. 1.
Fig. 3 is the II-II view of Fig. 1.
Fig. 4 is the A portion enlarged diagram of Fig. 1.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of construction bracket of 1 # block of inclined pull bridge of the present invention, comprise that symmetry is connected the shellfish thunder beam 5 on both sides before and after lower king-post strut 16 tops, Bei Leiliang and is connected with pre-buried the moon 12 in being located at lower king-post strut by bearing pin 13, form a fulcrum; The WJD bowl button 3 of on two shellfish thunder beams, laying i iron distribution beam 4 respectively, on two i iron distribution beam, laying respectively; End away from lower king-post strut below two shellfish thunder beams 5 is respectively equipped with front fulcrum distribution beam 7; One end of four skew cables 1 passes respectively that the front fulcrum distribution beam is connected with wedge 8, other end anchor on the top rail 17 of upper king-post strut 18, and a jack 10 is set at the anchor point place; One end of four steel strand 2 passes respectively that the front fulcrum distribution beam is connected with wedge 8, other end anchor on the anchor block 19 that is located on the top rail 17, and another jack 10 is set at the anchor point place; The front fulcrum distribution beam 7 that suspension cable and steel strand pass below the shellfish thunder beam 5 forms another fulcrum with wedge 8, thereby makes shellfish Lei Liang two ends form the stabilising system of two fulcrums;
End near lower king-post strut below two shellfish thunder beams 5 is respectively equipped with back hanging point distribution beam 9, this back hanging point distribution beam is connected with the lower end of suspension rod 11, the upper end of this suspension rod is passed the pre-buried via hole that is located on the 0# piece 14 and is connected with suspension rod anchor beam 6, to strengthen the rear fulcrum of this support.
The building method of a kind of construction bracket of 1 # block of inclined pull bridge of the present invention, its step is as follows:
The first step: when lower king-post strut 16 construction, pre-buried the moon 12 is embedded in the concrete, when 14 constructions of 0# piece, the pre-buried via hole that default suspension rod passes;
Second step: assembly unit shellfish thunder beam 5 on pre-buried the moon 12, node connects with bearing pin 13, after the installation of shellfish thunder beam, away from an end of lower king-post strut the front fulcrum distribution beam 7 that is welded with wedge 8 is installed at Bei Leiliang 5;
The 3rd step: with an end of four skew cables 1 pass respectively that the front fulcrum distribution beam is connected with wedge 8, other end anchor on the top rail 17 of upper king-post strut 18, and a jack 10 is set at the anchor point place; One end of four steel strand 2 passes respectively that the front fulcrum distribution beam is connected with wedge 8, other end anchor on the anchor block 19 that is located on the top rail 17, and another jack 10 is set at the anchor point place; Then, tighten up suspension cable 1, tighten up steel strand 2, satisfy the requirement of support Design absolute altitude up to Bei Leiliang 5 with another jack 10 with jack 10;
The 4th step: lay i iron 4 on Bei Leiliang 5, set up WJD bowl button support 3 on i iron 4, WJD bowl button support 3 is made up of subiculum, column, pop-up, cross bar, and its erection method is conventional erection method.
The 5th step: suspension rod anchor beam 6 is installed on the 0# piece 14 of having built, back hanging point distribution beam 9 is installed below Bei Leiliang 5, and the pre-buried via hole that passes on the 0# piece 14 with suspension rod 11 connects both, and tighten up suspension rod 11;
The 6th step: on WJD bowl button support 3, masterplate, assembling reinforcement are installed and build 1# piece 15 concrete.

Claims (2)

1. construction bracket of 1 # block of inclined pull bridge, comprise symmetry be connected the Bei Leiliang (5) on both sides before and after lower king-post strut (16) top, respectively be laid on i iron distribution beam (4) on the two shellfish thunder beams, be laid on WJD bowl button (3) on the two i iron distribution beam respectively, it is characterized in that:
End away from lower king-post strut below two Bei Leiliang (5) is respectively equipped with front fulcrum distribution beam (7); One end of four skew cables (1) passes respectively that the front fulcrum distribution beam is connected with wedge (8), other end anchor on the top rail (17) of upper king-post strut (18), and a jack (10) is set at the anchor point place; One end of four steel strand (2) passes respectively that the front fulcrum distribution beam is connected with wedge (8), other end anchor on the anchor block (19) that is located on the top rail (17), and another jack (10) is set at the anchor point place;
End near lower king-post strut below two Bei Leiliang (5) is respectively equipped with back hanging point distribution beam (9), this back hanging point distribution beam is connected with the lower end of suspension rod (11), the upper end of this suspension rod is passed the pre-buried via hole that is located on the 0# piece (14) and is connected with suspension rod anchor beam (6), to strengthen the rear fulcrum of this support;
Described Bei Leiliang (5) is connected by bearing pin (13) the pre-buried cloudy head (12) interior with being located at lower king-post strut (16), forms a fulcrum; The front fulcrum distribution beam (7) that suspension cable (1) and steel strand (2) pass below the Bei Leiliang (5) forms another fulcrum with wedge (8), thereby makes Bei Leiliang (5) two ends form the stabilising system of two fulcrums.
2. the building method of a kind of construction bracket of 1 # block of inclined pull bridge as claimed in claim 1, its step is as follows:
The first step: when lower king-post strut (16) is constructed, pre-buried cloudy head (12) is embedded in the concrete, when 0# piece (14) is constructed, the pre-buried via hole that default suspension rod passes;
Second step: go up assembly unit Bei Leiliang (5) at pre-buried cloudy head (12), node connects with bearing pin (13), after Bei Leiliang (5) installation, away from an end of lower king-post strut the front fulcrum distribution beam (7) that is welded with wedge (8) is installed at Bei Leiliang (5);
The 3rd step: with an end of two skew cables (1) pass respectively that the front fulcrum distribution beam is connected with wedge (8), other end anchor on the top rail (17) of upper king-post strut (18), and a jack (10) is set at the anchor point place; One end of two steel strand (2) passes respectively that the front fulcrum distribution beam is connected with wedge (8), other end anchor on the anchor block (19) that is located on the top rail (17), and another jack (10) is set at the anchor point place; Then, tighten up suspension cable (1), tighten up steel strand (2), satisfy the requirement of support Design absolute altitude up to Bei Leiliang (5) with another jack (10) with jack (10);
The 4th step: go up laying i iron (4) at Bei Leiliang (5), set up WJD bowl button support (3) on i iron (4), WJD bowl button support (3) is made up of subiculum, column, pop-up, cross bar, and its erection method is conventional erection method.
The 5th step: at the 0# piece (14) of having built suspension rod anchor beam (6) go up to be installed, back hanging point distribution beam (9) is installed below Bei Leiliang (5), and the pre-buried via hole that passes on the 0# piece (14) with suspension rod (11) connects both, and tighten up suspension rod (11);
The 6th step: go up installation masterplate, assembling reinforcement and build 1# piece (15) concrete at WJD bowl button support (3).
CN2009101047201A 2009-08-28 2009-08-28 Construction bracket of 1# block of inclined pull bridge and constructing method thereof Expired - Fee Related CN101649604B (en)

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Application Number Priority Date Filing Date Title
CN2009101047201A CN101649604B (en) 2009-08-28 2009-08-28 Construction bracket of 1# block of inclined pull bridge and constructing method thereof

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Application Number Priority Date Filing Date Title
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CN101649604B true CN101649604B (en) 2011-04-13

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
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CN102277836B (en) * 2011-06-14 2013-07-10 中铁五局集团建筑工程有限责任公司 Construction method of tilting concrete tower base
CN102505639A (en) * 2011-11-23 2012-06-20 中铁大桥局集团第二工程有限公司 Method for constructing 0 and 1 sections of beam body of cable-stayed bridge with no bracket
CN102367653A (en) * 2011-12-02 2012-03-07 中铁五局(集团)有限公司 Support structure for large-span continuous beam construction
CN102535343B (en) * 2012-02-02 2014-01-15 中铁大桥局股份有限公司 Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge
CN102733314B (en) * 2012-07-21 2014-06-25 中铁十八局集团轨道交通工程有限公司 Walking mechanism for moving hanging basket by front clamp type jack and construction method of walking mechanism
CN103898835B (en) * 2014-03-02 2015-11-11 葛洲坝集团第一工程有限公司 The anti-back of the body of bridge draws load-bearing construction bracket and construction method
CN104195956B (en) * 2014-09-11 2016-09-07 中铁八局集团第一工程有限公司 Falsework formula waters continuous beam cast-in-place support and building method thereof
CN104775365B (en) * 2015-02-28 2017-04-05 张跃平 A kind of construction method of cable-stayed bridge
CN106567332B (en) * 2016-09-30 2018-07-03 武船重型工程股份有限公司 A kind of turn-over method of cable wire tower
CN112593485B (en) * 2020-12-11 2021-07-23 保利长大工程有限公司 Steel tower cable-stayed support for large cantilever bent cap
CN113718654B (en) * 2021-09-01 2022-11-22 中电建路桥集团有限公司 Installation structure for ropeless beam section of bridge tower area

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