CN105088962A - Integrated hoisting method for corrugated steel web part - Google Patents
Integrated hoisting method for corrugated steel web part Download PDFInfo
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- CN105088962A CN105088962A CN201510569110.4A CN201510569110A CN105088962A CN 105088962 A CN105088962 A CN 105088962A CN 201510569110 A CN201510569110 A CN 201510569110A CN 105088962 A CN105088962 A CN 105088962A
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- wavelike steel
- steel webplate
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- corrugated steel
- steel web
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Abstract
The invention discloses an integrated hoisting method for a corrugated steel web part. The method includes the following steps that a hanging basket is moved forward in place on the N-1th corrugated steel web section of a corrugated steel web PC box girder bridge, so that the bottom of the hanging basket is fixed to the N-1th corrugated steel web section, and the top of the hanging basket protrudes out of the front end of the N-1th corrugated steel web section; precast splicing of the Nth corrugated steel web section is completed in a factory, the Nth corrugated steel web section is composed of a plurality of longitudinal corrugated steel webs, and the corrugated steel webs are fixedly connected with transverse steel cross beams and temporary supporting and reinforcing devices; by means of a flat plate barge, the Nth corrugated steel web section is conveyed to the position under the design position; by means of a hoisting system located on the top of the hanging basket, the Nth corrugated steel web section is hoisted in place, and the Nth corrugated steel web section and the N-1th corrugated steel web section are connected. The integrated hoisting method has the advantages that the construction period is effectively shortened, construction quality is improved, and aloft work time is shortened.
Description
Technical field
The invention belongs to technical field of bridge engineering, be specifically related to a kind of integral hoisting method of Wavelike steel webplate parts.
Background technology
Prestressed concrete composite box-girder with corrugated steel webs is the novel bridge form of a kind of economy, efficient, easy construction, it replaces the concrete web of prestressed concrete box girder as web by adopting Wavelike steel webplate, reduce the constraint of web to concrete frange plate, improve structural performance, improve material efficiency.The research of China to Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs is started late, and now built more than 30 seat Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs, in the majority with beam bridge.In recent years, along with theoretical research reach its maturity and practical experience constantly accumulate, Wavelike steel webplate PC case beam starts to apply to large span single-box multi-cell continuous girder bridge and cable stayed bridge.Piecemeal lift-on/lift-off system is generally adopted to complete Wavelike steel webplate lifting operation in Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs construction, this piecemeal hanging method substantially prolongs the duration, add the work high above the ground time and be difficult to ensure the welding quality of Wavelike steel webplate, and the inferior position for large span ultra-wide single-box multi-cell Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs particularly highlights.
Therefore, how under the precondition ensureing safety and construction quality, economical, realize the lifting of Wavelike steel webplate parts rapidly, become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The object of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of integral hoisting method of Wavelike steel webplate parts is provided, some Wavelike steel webplate sections are assembled into N Wavelike steel webplate sections by gooseneck and temporary support bracing means by this integral hoisting method, and are realized its integral hoisting by the Hanging Basket be set up on N-1 Wavelike steel webplate sections.
The object of the invention realizes being completed by following technical scheme:
A kind of integral hoisting method of Wavelike steel webplate parts, it is characterized in that described integral hoisting method comprises the steps: on the N-1 Wavelike steel webplate sections of Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs hanging basket advancing is in place, make the leading section that the bottom of described Hanging Basket is fixed on N-1 Wavelike steel webplate sections, top protrudes from described N-1 Wavelike steel webplate sections; The integral prefabricated assembled of N Wavelike steel webplate sections is completed in factory, described N Wavelike steel webplate sections is made up of to the Wavelike steel webplate arranged some pieces of vertical bridges, is connected and fixed between each described Wavelike steel webplate through the gooseneck of direction across bridge setting and temporary support bracing means; Flat top barge is adopted to be transported to immediately below its design attitude by described N Wavelike steel webplate sections; Utilize be positioned at described Hanging Basket top tackling system integral lifting described in N Wavelike steel webplate sections in place, completed the connection of described N Wavelike steel webplate sections and described N-1 Wavelike steel webplate sections by welding and high-strength bolt.
Described Hanging Basket is formed by connecting by horizontal-associate to the main couple arranged by some vertical bridges, and each described main couple is respectively directly over the corresponding Wavelike steel webplate being arranged in described N-1 Wavelike steel webplate sections.
Described tackling system comprises the crane that two symmetries are installed on described Hanging Basket top, through the distribution beam of wirerope lifting direction across bridge layout below described crane, interval, described distribution beam bottom flange be laid with some vertical bridges to shoulder pole girder, each described shoulder pole girder is connected respectively each Wavelike steel webplate on described N Wavelike steel webplate sections through suspension rod.
The center of gravity of described distribution beam and described N Wavelike steel webplate sections is in same perpendicular.
The top flange of the every block Wavelike steel webplate on described N Wavelike steel webplate sections is furnished with two suspension centres, and one of them suspension centre is arranged in the tie point place with described gooseneck, and another suspension centre is arranged in the tie point place with described temporary support bracing means.
Advantage of the present invention is, (1) " distribution beam+shoulder pole girder " scheme arrangement Wavelike steel webplate parts suspension centre is adopted, suspension centre is arranged in the junction of Wavelike steel webplate and gooseneck, temporary support bracing means, makes waveform steel web elements in hoisting process stressed more reasonable; (2) be prefabricated in the factory Wavelike steel webplate parts, both reduced cost and in turn ensure that welding quality; (3) longitudinal direction that job site need only be completed between Wavelike steel webplate sections by welding and high-strength bolt connects, and decreases the work high above the ground time, reduces construction risk; (4) prefabrication Wavelike steel webplate sections and site operation carry out simultaneously, substantially reduce the duration; (5) component such as suspension rod, distribution beam, shoulder pole girder, inverted U-shaped connector and temporary support is all reusable, has saved steel.
Accompanying drawing explanation
Fig. 1 is the integral hoisting schematic diagram of Wavelike steel webplate sections in the present invention;
Fig. 2 is the integral hoisting elevation of Wavelike steel webplate sections in the present invention;
Fig. 3 is Wavelike steel webplate sections and suspension centre layout schematic diagram in the present invention.
Detailed description of the invention
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technician of the same trade:
Be respectively as marked 1-16 in Fig. 1-3, figure: main couple 1, crane 2, horizontal-associate 3, N-1 Wavelike steel webplate sections 4, distribution beam 5, shoulder pole girder 6, suspension rod 7, N Wavelike steel webplate sections 8, top board 9, steel anchor box 10, suspension centre 11, gooseneck 12, temporary support bracing means 13, bearing pin 14, wirerope 15, Wavelike steel webplate 16.
Embodiment: as Figure 1-3, the present embodiment is specifically related to a kind of integral hoisting method of Wavelike steel webplate parts, is applicable to the Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs of single-box multi-cell, many casees multicell, specifically comprises the steps:
(1) prefabricated N Wavelike steel webplate sections 8 to be lifted in factory, namely, by some pieces of longitudinal Wavelike steel webplates 16 that uniform intervals is arranged on direction across bridge by gooseneck 12, temporary support bracing means 13 and steel anchor box 10 welding are linked to be an entirety, wherein, the top flange of each piece of Wavelike steel webplate 16 is furnished with two suspension centres 11 and lifts for loop wheel machine system, and in the welding of corresponding suspension centre 11 position for lifting by crane the interim otic placode connected, one of them suspension centre 11 is positioned at the junction of Wavelike steel webplate 16 and gooseneck 12, another suspension centre 11 is positioned at the junction of Wavelike steel webplate 16 and temporary support bracing means 13, and suspension centre 11 position on every block Wavelike steel webplate 16 is all arranged identical,
(2) meanwhile, assembled Hanging Basket on the N-1 Wavelike steel webplate sections 4 of Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs also moves forward, Hanging Basket is made up of some main couples 1, horizontal-associate 3 and loop wheel machine system, Hanging Basket entirety is connected and composed by horizontal-associate 3 along each longitudinal main couple 1 spaced apart on direction across bridge, each main couple 1 correspondence is arranged in directly over each Wavelike steel webplate in N-1 Wavelike steel webplate sections 4, and is anchored on the case back plate 9 on N-1 Wavelike steel webplate sections 4 by bearing pin 14; Wherein, each main couple 1 is spliced to form the parallelogram like of inclination by two triangular trusses, that is, one of them triangular truss is anchored on top board 9, and another triangular truss protrudes from the leading section of N-1 Wavelike steel webplate sections 4 to form the mounting platform of loop wheel machine system;
Aforesaid loop wheel machine system is installed on the top that Hanging Basket protrudes from N-1 Wavelike steel webplate sections 4 part, comprise two symmetrically arranged cranes 2, the wirerope 15 for lifting by crane lifting is placed with at crane about 2, the wirerope 15 lower end correspondence of every portion crane 2 is hung with the distribution beam 5 of one direction across bridge layout, and the bottom flange of each road distribution beam 5 is connected with the spaced apart vertical bridge in some roads to shoulder pole girder 6 through bolt; Wherein, distribution beam 5 is steel work, is formed by welded flange and stiffening rib on a block plate; Shoulder pole girder 6 is steel I-beam, and steel I-beam welds stiffening rib;
It should be noted that, the center of gravity of each road distribution beam 5 and the center of gravity of N Wavelike steel webplate sections 8 to be lifted are in same perpendicular, to guarantee that lifting steadily; In addition, the position of each road shoulder pole girder 6 corresponds to each Wavelike steel webplate 16 position in the N Wavelike steel webplate sections 8 to be lifted of below, can correspondingly can connect with each Wavelike steel webplate 16 to make each road shoulder pole girder 6 when the time comes, the stress point of N Wavelike steel webplate sections 8 is all positioned on Wavelike steel webplate position, avoids malformation when being hung at other position;
(3) flat top barge is adopted to be transported to immediately below its design attitude by N Wavelike steel webplate sections 8;
(4) distribution beam 5 and shoulder pole girder are put on flat top barge 6 times by wirerope 15 by the crane 2 be positioned on Hanging Basket, by adjusting the position of flat top barge to make each piece of Wavelike steel webplate 16 on N Wavelike steel webplate sections 8 with the position one_to_one corresponding of each road shoulder pole girder 6; Inverted U-shaped connector is adopted to be connected with the suspension rod 7 being anchored in shoulder pole girder 6 bottom flange by the interim otic placode at suspension centre 11 place each on Wavelike steel webplate 16 afterwards;
(5) after treating to be connected with N Wavelike steel webplate sections 8, by crane 2 integral lifting N Wavelike steel webplate sections 8 in place and with N-1 Wavelike steel webplate sections 4 end part aligning, afterwards by welding and high-strength bolt complete N Wavelike steel webplate sections 8 end with the connection between N-1 Wavelike steel webplate sections 4 end;
(6) after completing the connection between sections, remove shoulder pole girder 6 with the connection between N Wavelike steel webplate sections 8, remove the components such as suspension rod 7, distribution beam 5, shoulder pole girder 6, inverted U-shaped connector and temporary support bracing means 13, in time lifting N+1 sections, repetitive cycling uses again.
Integral hoisting method in the present embodiment is compared with the method for traditional piecemeal lifting Wavelike steel webplate, greatly reduce the Site Welding operation of Wavelike steel webplate parts, simplify the temperature pier measure of Wavelike steel webplate, decrease and set up, remove the work high above the ground that temporary support carries out, each sections reduces the activity duration 20 for each person every day, full-bridge can reduce the work high above the ground time 960 for each person every day altogether, altogether 96 days reductions of erection time.In addition, by adopting " distribution beam+shoulder pole girder " scheme arrangement Wavelike steel webplate parts suspension centre, suspension centre is arranged in the junction of Wavelike steel webplate and gooseneck, temporary support, make waveform steel web elements in hoisting process stressed more reasonable, lifting steadily, avoids sections unbalance stress in hoisting process to cause distortion.
Claims (5)
1. the integral hoisting method of Wavelike steel webplate parts, it is characterized in that described integral hoisting method comprises the steps: on the N-1 Wavelike steel webplate sections of Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs hanging basket advancing is in place, make the leading section that the bottom of described Hanging Basket is fixed on N-1 Wavelike steel webplate sections, top protrudes from described N-1 Wavelike steel webplate sections; The integral prefabricated assembled of N Wavelike steel webplate sections is completed in factory, described N Wavelike steel webplate sections is made up of to the Wavelike steel webplate arranged some pieces of vertical bridges, is connected and fixed between each described Wavelike steel webplate through the gooseneck of direction across bridge setting and temporary support bracing means; Flat top barge is adopted to be transported to immediately below its design attitude by described N Wavelike steel webplate sections; Utilize be positioned at described Hanging Basket top tackling system integral lifting described in N Wavelike steel webplate sections in place, completed the connection of described N Wavelike steel webplate sections and described N-1 Wavelike steel webplate sections by welding and high-strength bolt.
2. the integral hoisting method of a kind of Wavelike steel webplate parts according to claim 1, it is characterized in that described Hanging Basket is formed by connecting by horizontal-associate to the main couple arranged by some vertical bridges, each described main couple is respectively directly over the corresponding Wavelike steel webplate being arranged in described N-1 Wavelike steel webplate sections.
3. the integral hoisting method of a kind of Wavelike steel webplate parts according to claim 1, it is characterized in that described tackling system comprises the crane that two symmetries are installed on described Hanging Basket top, through the distribution beam of wirerope lifting direction across bridge layout below described crane, interval, described distribution beam bottom flange be laid with some vertical bridges to shoulder pole girder, each described shoulder pole girder is connected respectively each Wavelike steel webplate on described N Wavelike steel webplate sections through suspension rod.
4. the integral hoisting method of a kind of Wavelike steel webplate parts according to claim 3, is characterized in that the center of gravity of described distribution beam and described N Wavelike steel webplate sections is in same perpendicular.
5. the integral hoisting method of a kind of Wavelike steel webplate parts according to claim 1, the top flange that it is characterized in that the every block Wavelike steel webplate on described N Wavelike steel webplate sections is furnished with two suspension centres, one of them suspension centre is arranged in the tie point place with described gooseneck, and another suspension centre is arranged in the tie point place with described temporary support bracing means.
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| CN201510569110.4A CN105088962B (en) | 2015-09-09 | 2015-09-09 | A kind of integral hoisting method of Wavelike steel webplate part |
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| CN201510569110.4A CN105088962B (en) | 2015-09-09 | 2015-09-09 | A kind of integral hoisting method of Wavelike steel webplate part |
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| CN105088962A true CN105088962A (en) | 2015-11-25 |
| CN105088962B CN105088962B (en) | 2017-03-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110761165A (en) * | 2019-10-24 | 2020-02-07 | 安徽省路港工程有限责任公司 | Steel web box girder installation system and construction method thereof |
| CN113637488A (en) * | 2021-07-12 | 2021-11-12 | 五冶集团上海有限公司 | Integral installation method of sectional type protection plate of coke oven |
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| CN102154992A (en) * | 2011-04-28 | 2011-08-17 | 中交第二公路工程局有限公司 | Dislocation installation method of corrugated steel web |
| CN202936737U (en) * | 2012-10-23 | 2013-05-15 | 中铁十八局集团第一工程有限公司 | Continuous beam cradle hoisting structure for corrugated steel webs |
| CN104047234A (en) * | 2014-04-02 | 2014-09-17 | 中铁二院工程集团有限责任公司 | Self load bearing side span closure construction method for corrugated steel web plate continuous rigid frame bridge |
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| CN102154992A (en) * | 2011-04-28 | 2011-08-17 | 中交第二公路工程局有限公司 | Dislocation installation method of corrugated steel web |
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| CN104047234A (en) * | 2014-04-02 | 2014-09-17 | 中铁二院工程集团有限责任公司 | Self load bearing side span closure construction method for corrugated steel web plate continuous rigid frame bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761165A (en) * | 2019-10-24 | 2020-02-07 | 安徽省路港工程有限责任公司 | Steel web box girder installation system and construction method thereof |
| CN110761165B (en) * | 2019-10-24 | 2021-03-30 | 安徽省路港工程有限责任公司 | Steel web box girder installation system and construction method thereof |
| CN113637488A (en) * | 2021-07-12 | 2021-11-12 | 五冶集团上海有限公司 | Integral installation method of sectional type protection plate of coke oven |
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| CN105088962B (en) | 2017-03-29 |
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