CN101845795B - Cable-stayed cradle of adjustment-free cable tension long platform in construction of cable-stayed bridge - Google Patents
Cable-stayed cradle of adjustment-free cable tension long platform in construction of cable-stayed bridge Download PDFInfo
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- CN101845795B CN101845795B CN 201010180204 CN201010180204A CN101845795B CN 101845795 B CN101845795 B CN 101845795B CN 201010180204 CN201010180204 CN 201010180204 CN 201010180204 A CN201010180204 A CN 201010180204A CN 101845795 B CN101845795 B CN 101845795B
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Abstract
The invention discloses a cable-stayed cradle of an adjustment-free cable tension long platform in the construction of a cable-stayed bridge, which comprises a bearing platform, wherein the bearing platform comprises a hook, a primary longitudinal beam, a secondary longitudinal beam, a transverse beam and a back transverse beam; the back end of the primary longitudinal beam is provided with a primary reverse-resisting mechanism; and the back end of the secondary longitudinal beam is provided with a secondary reverse-resisting mechanism. The cable-stayed cradle is easy in linear control, and the pouring process needs no cable tension adjustment.
Description
Technical field
The present invention relates to the construction equipment of cable stayed bridge, especially a kind of CONSTRUCTION OF CABLE-STAYED BRIDGE exempts to transfer the Suo Li long platform tiltedly to draw Hanging Basket.
Background technology
In the cantilever pouring work progress of cable-stayed bridge main-beam, Hanging Basket is arranged on treats the casting beams section, during use; The Hanging Basket rear end is anchored on the casting beams section, and front end and suspension cable are fixed through tensioning equipment, the key stressed member when the Hanging Basket front end is concreting; The Hanging Basket front end bears about 2/3 the load of building, and concrete is in the process of building, along with the continuous increase of working load; The front end of Hanging Basket in order to guarantee the linear of Hanging Basket, must repeatedly be adjusted the Suo Li of suspension cable to downwarp during the process of building; Increase the control difficulty of work progress so greatly, be unfavorable for the linear control of Hanging Basket; In order to improve the Hanging Basket global stiffness and to reduce distortion, need English truss be set at bridge floor usually, strengthened the Hanging Basket manufacturing cost.
Summary of the invention
The object of the present invention is to provide a kind of linear control easy, the process of building need not adjusted the CONSTRUCTION OF CABLE-STAYED BRIDGE of Suo Li and exempt to transfer the Suo Li long platform tiltedly to draw Hanging Basket.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is:
A kind of CONSTRUCTION OF CABLE-STAYED BRIDGE exempts to transfer the Suo Li long platform tiltedly to draw Hanging Basket; Comprise carrying platform; This carrying platform comprises hook, main longitudinal grider, inferior longeron, front beam and rear cross beam, is provided with the anti-top of master mechanism in the rear end of main longitudinal grider, is provided with time anti-mechanism of pushing up in the rear end of inferior longeron.
Said master is counter, and the mechanism of pushing up comprises jack, helical screw, screw mandrel bearing, bearing screwed cap; Helical screw is installed in the screw mandrel bearing and passes the center hole of jack; Top at helical screw also is provided with the screw mandrel head, and bearing screwed cap is enclosed within on the helical screw between screw mandrel head and screw mandrel bearing.
Said time the anti-mechanism of pushing up comprises time anti-top jack, neoprene bearing, inferior anti-top jacking bracket, and inferior anti-top jack is located on time anti-top jacking bracket, and neoprene bearing is fixed on time push rod of anti-top jack.
Described neoprene bearing is made up of rubber pad and rubber pad carriage, and the rubber carriage is fixedly connected with time push rod of anti-top jack, and rubber pad is located at above the rubber carriage.
After the present invention adopts said structure, have the following advantages:
At first, be provided with the anti-top of master mechanism in the rear end of main longitudinal grider, be provided with time anti-mechanism of pushing up in the rear end of inferior longeron; Can regulate Hanging Basket fulcrum absolute altitude through regulating the main anti-mechanism of pushing up,, solve tradition and hung blue fulcrum absolute altitude through the adjusting of adjusting stay cable force simultaneously through the inferior anti-internal force that mechanism can control time longeron and front beam that pushes up; Control the big problem of difficulty; And, hang blue complex structure, the problem that cost is high through English truss is set at bridge floor to reach the blue global stiffness of increase extension;
Secondly; The main anti-mechanism of pushing up comprises jack, helical screw, screw mandrel bearing, bearing screwed cap; Helical screw is installed in the screw mandrel bearing and passes the center hole of jack, also is provided with the screw mandrel head on the top of helical screw, and bearing screwed cap is enclosed within on the screw mandrel between screw mandrel head and screw mandrel bearing; Reach the absolute altitude of regulating Hanging Basket through the absolute altitude of regulating screw mandrel, so regulate very convenient.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain:
Fig. 1 is a structure chart of the present invention;
Fig. 2 is the anti-top of master of the present invention mechanism structure figure;
Fig. 3 is the present invention time anti-top mechanism structure figure.
Among the figure: 1 carrying platform, 11 hooks, 12 main longitudinal griders, 13 longerons, 14 front beams; 15 rear cross beams, 2 main anti-mechanism, 21 jack, 22 helical screws, the 23 screw mandrel bearings of pushing up; 24 bearing screwed caps, 25 screw mandrel heads, 3 anti-mechanism, 31 anti-top jack, 32 neoprene bearings of pushing up; 321 rubber pads, 322 rubber pad carriages, 33 anti-top jacking brackets, 4 tensioning systems, 5 suspension cables.
The specific embodiment
Fig. 1, shown in 2 and 3; CONSTRUCTION OF CABLE-STAYED BRIDGE of the present invention exempts to transfer the Suo Li long platform tiltedly to draw Hanging Basket, comprises carrying platform 1, and this carrying platform 1 comprises hook 11, main longitudinal grider 12, inferior longeron 13, front beam 14 and rear cross beam 15; Be provided with the main anti-mechanism 2 of pushing up in the rear end of main longitudinal grider 12; Be provided with time anti-mechanism 3 of pushing up in the rear end of inferior longeron 13, said master is counter, and the mechanism 2 of pushing up comprises jack 21, helical screw 22, screw mandrel bearing 23, bearing screwed cap 24, and helical screw 22 is installed in the screw mandrel bearing 23 and passes the center hole of jack 21; Top at helical screw 22 also is provided with screw mandrel head 25, and bearing screwed cap 24 is enclosed within on the helical screw 22 between screw mandrel head 25 and the screw mandrel bearing 23.Said time the anti-mechanism 3 of pushing up comprises time anti-top jack 31, neoprene bearing 32, inferior anti-top jacking bracket 33; Inferior anti-top jack 31 is located on time anti-top jacking bracket 33; Neoprene bearing 32 is fixed on time push rod of anti-top jack 31; Described neoprene bearing 32 is made up of rubber pad 321 and rubber pad carriage 322, and rubber carriage 322 is fixedly connected with time push rod of anti-top jack 31, and rubber pad 321 is located at above the rubber carriage 322.Front end at main longitudinal grider 12 is provided with tensioning system 4; This tensioning system 4 is when the Hanging Basket cantilever casting construction, suspension cable 5 and Hanging Basket to be coupled together the formation front fulcrum; Apply certain tensile stress for suspension cable 5, with internal force and the distortion of minimizing front end that reduces main longitudinal grider 12 in the construction; After cantilever is accomplished, suspension cable 5 is separated the conversion of realization system with Hanging Basket.During the system conversion, pretensioning guy rope pull bar loosens pull-rod nut, and jack slowly loosens then, and the drag-line nut is stressed to be compressed, and the anchor head connector is removed in the system conversion at last, and Hanging Basket separates with suspension cable 5.When specifically installing and using, need the rear end of Hanging Basket be anchored on the casting beams section, the front end of Hanging Basket is fixed on the suspension cable 5 through tensioning system 4.
Cradle construction is divided into telephone-moving, first phase and transfers rope, pouring box beam concrete and second phase to transfer four-stages such as rope, and concrete construction process is: 1) concrete curing etc. is strong 5 days, and prestress tensioning equipment is installed, and traction is in place on the sections oblique tensile tower down; 2) stretch-draw prestressing force steel strand and finish rolling deformed bar; 3) Suo Li conversion, stretch-draw is to this sections second phase Suo Li; 4) Hanging Basket is transferred;
Claims (2)
1. a CONSTRUCTION OF CABLE-STAYED BRIDGE exempts to transfer the Suo Li long platform tiltedly to draw Hanging Basket; Comprise carrying platform (1); It is characterized in that: this carrying platform (1) comprises hook (11), main longitudinal grider (12), inferior longeron (13), front beam (14) and rear cross beam (15); Be provided with the anti-top of master mechanism (2) in the rear end of main longitudinal grider (12), be provided with time anti-mechanism (3) of pushing up in the rear end of inferior longeron (13); Said master is counter, and the mechanism (2) of pushing up comprises jack (21), helical screw (22), screw mandrel bearing (23), bearing screwed cap (24); Helical screw (22) is installed in the screw mandrel bearing (23) and passes the center hole of jack (21); Also be provided with screw mandrel head (25) on the top of helical screw (22), bearing screwed cap (24) is enclosed within on the helical screw (22) between screw mandrel head (25) and the screw mandrel bearing (23); Said anti-top mechanism (3) comprises time anti-top jack (31), neoprene bearing (32), inferior anti-top jacking bracket (33); Inferior anti-top jack (31) is located on time anti-top jacking bracket (33), and neoprene bearing (32) is fixed on the push rod of time anti-top jack (31).
2. CONSTRUCTION OF CABLE-STAYED BRIDGE according to claim 1 exempts to transfer the Suo Li long platform tiltedly to draw Hanging Basket; It is characterized in that: described neoprene bearing (32) is made up of rubber pad (321) and rubber pad carriage (322); Rubber carriage (322) is fixedly connected with the push rod of time anti-top jack (31), and rubber pad (321) is located at above the rubber carriage (322).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010180204 CN101845795B (en) | 2010-05-17 | 2010-05-17 | Cable-stayed cradle of adjustment-free cable tension long platform in construction of cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010180204 CN101845795B (en) | 2010-05-17 | 2010-05-17 | Cable-stayed cradle of adjustment-free cable tension long platform in construction of cable-stayed bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101845795A CN101845795A (en) | 2010-09-29 |
| CN101845795B true CN101845795B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010180204 Expired - Fee Related CN101845795B (en) | 2010-05-17 | 2010-05-17 | Cable-stayed cradle of adjustment-free cable tension long platform in construction of cable-stayed bridge |
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| CN (1) | CN101845795B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493334A (en) * | 2011-11-30 | 2012-06-13 | 上海市城市建设设计研究总院 | Bearing platform cable-stayed precast assembled column bearing platform structure and assembling and positioning process thereof |
| CN103806375A (en) * | 2014-03-10 | 2014-05-21 | 广东省长大公路工程有限公司 | Construction method for avoiding regulating cable force during construction and pouring of girder of concrete cable stayed bridge |
| CN103835241B (en) * | 2014-03-11 | 2015-12-30 | 柳州欧维姆机械股份有限公司 | The dragging suspension basket of a kind of pin joint hook, band pin joint hook and fabrication and installation method thereof |
| CN112942133B (en) * | 2021-04-01 | 2022-08-30 | 中交二航局第二工程有限公司 | Tensioning and positioning device and method for front fulcrum hanging basket |
| CN113969547A (en) * | 2021-11-11 | 2022-01-25 | 无锡金诚工程技术服务有限公司 | U-shaped manned hanging basket type maintenance platform for large bridge tower |
| CN114457682A (en) * | 2021-12-28 | 2022-05-10 | 黑龙江省龙建路桥第五工程有限公司 | Cast-in-place construction method of cast-in-place concrete bridge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123861A (en) * | 1995-08-28 | 1996-06-05 | 铁道部大桥工程局 | Construction of prestressed concrete stayed cable bridge |
| CN2597531Y (en) * | 2002-11-21 | 2004-01-07 | 广东省长大公路工程有限公司第一分公司 | Single rope face tracting rope hanging cage |
| JP3946342B2 (en) * | 1998-03-09 | 2007-07-18 | 三井住友建設株式会社 | Bridge erection device |
-
2010
- 2010-05-17 CN CN 201010180204 patent/CN101845795B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123861A (en) * | 1995-08-28 | 1996-06-05 | 铁道部大桥工程局 | Construction of prestressed concrete stayed cable bridge |
| JP3946342B2 (en) * | 1998-03-09 | 2007-07-18 | 三井住友建設株式会社 | Bridge erection device |
| CN2597531Y (en) * | 2002-11-21 | 2004-01-07 | 广东省长大公路工程有限公司第一分公司 | Single rope face tracting rope hanging cage |
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| Publication number | Publication date |
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| CN101845795A (en) | 2010-09-29 |
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Granted publication date: 20120718 Termination date: 20210517 |