CN201250385Y - Rear support long cantilevered traveling carriage system for cable-stayed bridge cantilever casting - Google Patents
Rear support long cantilevered traveling carriage system for cable-stayed bridge cantilever casting Download PDFInfo
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- CN201250385Y CN201250385Y CNU2008200999449U CN200820099944U CN201250385Y CN 201250385 Y CN201250385 Y CN 201250385Y CN U2008200999449 U CNU2008200999449 U CN U2008200999449U CN 200820099944 U CN200820099944 U CN 200820099944U CN 201250385 Y CN201250385 Y CN 201250385Y
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Abstract
The utility model relates to a rear support long cantilevered traveling carriage system for cable-stayed bridge cantilever casting, comprising a main load-bearing system, an anchorage system, a suspended system, a bottom carriage and a form system. The utility model is characterized in that the main load-bearing system comprises two frame plane-surface English trusses which are left-right symmetrically arranged, each frame plane-surface English truss comprises a steel box girder of a main bridge, a vertical compression bar, a front diagonal tie and a rear diagonal tie, a main steel box girder is arranged on a horizontal seat girder which is located on a same cross section with the vertical compression bar to form an entire body through a horizontal diagonal tie and an anchorage system is arranged at the middle rear portion of the main steel box girder of the main load-bearing system. The traveling carriage system has the advantages of simple design, more economy of fabrication cost, good adaptability, avoiding the uncertainty of height mark of the traveling carriage when a front support traveling carriage arm is in construction, good security, guaranteeing each boom of a front suspension center to bear even force through a force cell sensor and ensuring horizontal stability when a single plane cable-stayed bridge main bridge is in construction.
Description
Technical field
The utility model relates to the bridge construction support, is specifically related to be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, and is applicable to large span, single plane cable stayed bridge cantilever pouring.
Background technology
Stayed-cable bridge cantilever is built common employing Hanging Basket as the rack template system, and the rear end of Hanging Basket is anchored on the beam section of having built, and the front end cantilever is in the air.The pulling force that makes progress that front end utilizes suspension cable is called Hanging basket on front support as the Hanging Basket of the strong point; Front end utilizes the pulling force that makes progress that bridge floor balance trussed construction provides to be called the rear fulcrum Hanging Basket as the Hanging Basket of the strong point.The kingpost cantalever of continuous rigid frame bridge is built relatively, for embodying the superiority of this bridge type of cable stayed bridge, will make full use of the huge pulling force that suspension cable can provide, and alleviates the Hanging Basket deadweight, optimizes the Hanging Basket design, reduces engineering cost.During the cable-stayed bridge main-beam cantilever pouring, adopt Hanging basket on front support usually as the rack template system.For single plane cable stayed bridge, as adopting Hanging basket on front support, can since in must guaranteeing to construct system horizontal safe that Hanging Basket is designed is complicated unusually, operate very loaded down with trivial details, thereby economy, the applicability of reduction Hanging Basket; In addition, because the single plane cable stayed bridge girder is box section, the huge counter-force that thrust brake produced of Hanging basket on front support makes the back-plane design thickness of case beam have to increase, and then can increase construction costs.
Summary of the invention
The purpose of this utility model provides a kind of rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built that is used for, poor, the complicated operation problem of the lateral stability of Hanging basket on front support when it can solve the single plane cable stayed bridge cantilever construction, can overcome unfavorable factors such as rear fulcrum Hanging Basket cantilever is short, rigidity is little again, and construction costs is lower, and is economical and practical.
Described in the utility modelly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, form, it is characterized in that by main truss load bearing system, anchor system, suspension system, end basket and template system:
The main truss load bearing system comprises and is symmetrical set two Pin plane trigonometry truss, and every Pin plane trigonometry truss is connected preceding diagonal member, an end that the perpendicular depression bar upper end other end is connected girder steel case beam front end by girder steel case beam, the perpendicular depression bar, the end that are vertically connected on girder steel case beam middle part and is connected the back diagonal member that the perpendicular depression bar upper end other end is connected girder steel case beam rear end and forms; Main steel case beam is arranged on the horizontal seat beam, and horizontal seat beam and perpendicular depression bar are positioned on the same cross section, are linked to be integral body by horizontal diagonal member; Be provided with below in horizontal seat beam and the corresponding main fulcrum of main steel case beam, main fulcrum is located on the walking backbone; Be respectively equipped with secondary supporting leg at the two ends of horizontal seat beam, secondary supporting leg is located on the secondary rail of walking; As same balancing pole, fulcrum is located at the end of the cable-stayed bridge main-beam of having built to the main truss load bearing system along the bridge, and its bracketed part bears the load of Hanging Basket first half, in order to keep balance, the back anchor system is set at its rear portion.
Anchor system is located at the postmedian of the main steel case beam of main truss load bearing system, this system comprises that an end is anchored at the back anchor pole in the concreting, the other end of back anchor pole passes the upper pressure seat that is provided with above the main steel case beam and is connected with the top cross-arm, is provided with jack between upper pressure seat and top cross-arm; This system also comprises the insurance wedge that is located at main steel case beam rearward end, and the lower end of insurance wedge is anchored in the concreting, to strengthen the safety factor of Hanging Basket.
Describedly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, between upper pressure seat and girder steel case beam, be provided with the tetrafluoro slide plate as back anchor slide rail.Its effect is can move freely under the situation of back anchor system constraint for girder steel case beam.
Describedly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, its suspension system is made up of forward and backward two parts;
The forward part of suspension system comprises: be located at girder steel case beam front end and connect two Pin plane trigonometry truss preceding top rail, be located at before on the top rail preceding seat of honour load, be located at pressure sensor on the load of the preceding seat of honour, be located at preceding on the pressure sensor and go up cross-arm, upper end and preceding seat of honour load and precedingly go up the suspension rod that cross-arm is connected, comprise that also be connected the suspension rod lower end preceding put forward load down, be located at the preceding lower transverse beam of carrying under preceding on the load; The effect of pressure sensor is the load of each suspension rod of test, and adjustment suspension rod upper cap nut degree of tightness makes each suspension rod stressed evenly.
The rear section of suspension system comprises: top is anchored at rear suspension bar on the concreting end, be connected the rear suspension bar bottom afterwards put forward load down, be located at the back and carry back lower transverse beam on the load down, thereby with the rear section Load Transfer of Hanging Basket system to the concrete girder of having built;
Describedly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, its end basket and template system are main force transferring structure, concrete blinding and the support system of rear fulcrum long cantilever Hanging Basket system, comprise i iron longeron on the lower transverse beam of lower transverse beam and back before being located at, be located at transverse distribution beam on the i iron longeron, be located at vertical distribution beam on the transverse distribution beam, be located at the template on vertical distribution beam, and select for use 7 i iron longeron spreadings as sliding beam; Every sliding beam is provided with two sliding beam dollies, and the upper end of sliding beam dolly is anchored in the concrete of having built; Also comprise the draw-gear that is located at the Hanging Basket between main fulcrum and the walking backbone.
The characteristics of this Hanging Basket system are:
(1) the main truss load bearing system is two Pin plane trigonometry truss, and the plane trigonometry truss is made up of main steel case beam, perpendicular depression bar, diagonal member, can reach arm length, purpose that rigidity is big;
(2) be provided with horizontal seat beam below the main steel case beam, be linked to be integral body, strengthen the lateral stability of two Pin plane trigonometry truss, be applicable to Dan Suomian, the construction of wide bridge floor stayed-cable bridge cantilever by horizontal diagonal member and perpendicular depression bar;
(3) the front overhang suspension centre is provided with pressure sensor, according to the reading of pressure sensor, regulates the slackness of suspension rod so that each suspension rod is stressed evenly;
(4) forward and backward lower transverse beam adopts the box-type section girder steel, and enough strength and stiffness are provided.
The utility model is compared with prior art and is had the following advantages:
(1) simplicity of design, cost economic.Do not need the Hanging basket on front support complexity slideway, move back rope device, thrust brake, optimize kingpost baseplate thickness;
(2) applicability is good; By the bigger bridge floor truss support Hanging Basket front end load of bridge floor rigidity, need not adjust the Hanging Basket absolute altitude in the concreting process, the uncertainty of Hanging Basket absolute altitude when having avoided the Hanging basket on front support cantilever construction; Main truss adds steel case beam for tiltedly drawing purlin formula structure, has increased cantilever construction length; The walking of two 22t vertically-displacable jack traction Hanging Baskets by track control Hanging Basket direction of travel and mileage, is walked accommodatingly, and the back adjustment amount that puts in place is little;
(3) safety is good; Guarantee the evenly stressed of preceding every suspension rod of suspension centre by load cell, guaranteed the lateral stability in the single plane cable stayed bridge main girder construction.
Description of drawings
Fig. 1 is a cross-sectional drawing of the present utility model.
Fig. 2 is the A-A sectional drawing of Fig. 1.
The specific embodiment
The utility model technology is further described by case history below in conjunction with accompanying drawing.
Referring to Fig. 1 and Fig. 2, describedly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, form by main truss load bearing system, anchor system, suspension system, end basket and template system;
Its main truss load bearing system comprises and is symmetrical set two Pin plane trigonometry truss, and every Pin plane trigonometry truss is connected preceding diagonal member 3, the end that the perpendicular depression bar upper end other end is connected girder steel case beam front end by girder steel case beam 1, the perpendicular depression bar 2, the end that are vertically connected on girder steel case beam middle part and is connected the back diagonal member 3 that the perpendicular depression bar upper end other end is connected girder steel case beam rear end
Form; Main steel case beam is arranged on the horizontal seat beam 4, and horizontal seat beam and perpendicular depression bar are positioned on the same cross section, is linked to be integral body by horizontal diagonal member 5; Be provided with below in horizontal seat beam and the corresponding main fulcrum 6 of main steel case beam, main fulcrum is located on the walking backbone 28; Be respectively equipped with secondary supporting leg 7 at the two ends of horizontal seat beam, secondary supporting leg is located on the secondary rail 29 of walking;
Its anchor system is located at the postmedian of the main steel case beam 1 of main truss load bearing system, this system comprises that an end is anchored at the back anchor pole 22 in the concreting, the other end of back anchor pole passes the upper pressure seat 21 that is provided with above the main steel case beam and is connected with top cross-arm 19, between upper pressure seat 21 and top cross-arm 19, be provided with jack 20, between upper pressure seat and girder steel case beam, be provided with the tetrafluoro slide plate as back anchor slide rail 32; This system also comprises the insurance wedge 23 that is located at main steel case beam 1 rearward end, and the lower end of insurance wedge is anchored in the concreting.
Its suspension system is made up of forward and backward two parts;
The forward part of suspension system comprises: be located at girder steel case beam 1 front end and connect two Pin plane trigonometry truss preceding top rail 11, be located at before on the top rail preceding seat of honour load 10, be located at pressure sensor 9 on the load of the preceding seat of honour, be located at preceding on the pressure sensor and go up cross-arm 8, upper end and preceding seat of honour load 10 and precedingly go up the suspension rod 12 that cross-arm 8 is connected, comprise that also be connected suspension rod 12 lower ends preceding put forward load 15 down, be located at the preceding lower transverse beam of carrying under preceding on the load 14; Suspension rod 12 is by hanger rod connecting piece 13 spreadings;
The rear section of suspension system comprises: top is anchored at rear suspension bar 17 on the concreting end, be connected the rear suspension bar bottom afterwards put forward load 18 down, be located at the back and carry back lower transverse beam 16 on the load down, thereby give the concrete girder of having built with the rear section Load Transfer of Hanging Basket system;
The suspension system front portion is divided into two groups of suspension centres, utilizes rod iron as suspension rod, and every group of suspension centre is 8 rod irons.The suspension system rear portion is divided into 6 groups of suspension centres, and every group of suspension centre is made up of 4 finish rolling deformed bars, with the upper and lower anchoring finish rolling deformed bar of finish rolling deformed bar Special ground tackle.
Its end basket and template system comprise be located at before on lower transverse beam 14 and the back lower transverse beam 16 i iron longeron 24, be located at transverse distribution beam 25 on the i iron longeron, be located at vertical distribution beam 26 on the transverse distribution beam, be located at the template 27 on vertical distribution beam, and select for use 7 i iron longeron spreadings as sliding beam 31; Every sliding beam is provided with two sliding beam dollies 30, and the upper end of sliding beam dolly is anchored in the concrete of having built; Also comprise the draw-gear 33 that is located at the Hanging Basket between main fulcrum and the walking backbone.
The main truss load bearing system is two independently plane trigonometry truss.The front end of the last section box girder that being supported on constructs finishes, rear portion are provided with the moment that the anterior suspention of anchoring system balance load produces.The perpendicular depression bar 2 and the diagonal member 3 that are fixed in main steel case beam 1 top provide enough bearing capacity and rigidity for rear fulcrum long cantilever Hanging Basket system.
The lateral stability of main truss load bearing system is then provided safeguard by horizontal seat beam 4, horizontal diagonal member 5, secondary supporting leg 7, secondary supporting leg 7 provides vertical support power upwards for horizontal seat beam 4 ends, provide enough lateral stability power by 5 pairs of main truss load bearing systems of horizontal diagonal member, make the main truss load bearing system have good lateral stability.
Hanging Basket adopts the sliding type walking, and main fulcrum 6 belows are provided with walking backbone 28, and secondary supporting leg 7 belows are provided with the secondary rail 29 of walking.The secondary rail 29 of walking supports horizontal seat beam when Hanging Basket is worked, to strengthen the direction across bridge plane stability of main truss bearing system, when Hanging Basket is walked, keep the walking balance on the one hand, controls direction of travel on the one hand.The deadweight that sliding beam dolly 30 bears the following latter half Hanging Basket of Hanging Basket bridge floor during the Hanging Basket walking, sliding beam 31 is installed on the sliding beam dolly.The draw-gear of Hanging Basket is provided with the point of application on the walking backbone counter-force point being set on the main fulcrum, utilize 22t vertically-displacable jack tension steel strand to finish.
During Hanging Basket work, case beam load is passed to the i iron longeron 24 of its below by template 27, vertical distribution beam 26, transverse distribution beam 25,24 of i iron longerons are by preceding lower transverse beam 14 and 16 supportings of back lower transverse beam, back lower transverse beam 16 hangs on the last section box girder of finishing of constructing by 6 suspension centres, and 14 of preceding lower transverse beams are hung on the main steel case beam 1 by two suspension centres.Closely half passes to a last section box girder of constructing and finishing by back lower transverse beam 16 to beam sections body concrete load, and second half passes to the main truss load bearing system by preceding lower transverse beam 14.
Claims (4)
1, described in the utility modelly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, form, it is characterized in that by main truss load bearing system, anchor system, suspension system, end basket and template system:
The main truss load bearing system comprises and is symmetrical set two Pin plane trigonometry truss, and every Pin plane trigonometry truss is connected preceding diagonal member (3), an end that the perpendicular depression bar upper end other end is connected girder steel case beam front end by girder steel case beam (1), the perpendicular depression bar (2), the end that are vertically connected on girder steel case beam middle part and is connected the back diagonal member (3`) that the perpendicular depression bar upper end other end is connected girder steel case beam rear end and forms; Main steel case beam is arranged on the horizontal seat beam (4), and horizontal seat beam and perpendicular depression bar are positioned on the same cross section, is linked to be integral body by horizontal diagonal member (5); Be provided with the main fulcrum (6) corresponding with main steel case beam below in horizontal seat beam, main fulcrum is located on the walking backbone (28); Be respectively equipped with secondary supporting leg (7) at the two ends of horizontal seat beam, secondary supporting leg is located on the secondary rail of walking (29);
Anchor system is located at the postmedian of the main steel case beam (1) of main truss load bearing system, this system comprises that an end is anchored at the back anchor pole (22) in the concreting, the other end of back anchor pole passes the upper pressure seat (21) that is provided with above the main steel case beam and is connected with top cross-arm (19), is provided with jack (20) between upper pressure seat (21) and top cross-arm (19); This system also comprises the insurance wedge (23) that is located at main steel case beam (1) rearward end, and the lower end of insurance wedge is anchored in the concreting.
2, according to claim 1ly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, it is characterized in that: between upper pressure seat (21) and girder steel case beam (1), be provided with the tetrafluoro slide plate as back anchor slide rail (32).
3, according to claim 1 and 2ly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, it is characterized in that: described suspension system is made up of forward and backward two parts;
The forward part of suspension system comprises: be located at girder steel case beam (1) front end and connect two Pin plane trigonometry truss preceding top rail (11), be located at before on the top rail preceding seat of honour load (10), be located at pressure sensor (9) on the load of the preceding seat of honour, be located at preceding on the pressure sensor and go up cross-arm (8), upper end and the preceding seat of honour and carry on a shoulder pole (10) and precedingly go up the suspension rod (12) that cross-arm (8) is connected, also comprise being connected under suspension rod (12) lower end preceding and put forward load (15), be located at the preceding lower transverse beam of carrying under preceding on the load (14);
The rear section of suspension system comprises: top is anchored at rear suspension bar (17) on the concreting end, be connected the rear suspension bar bottom afterwards put forward load (18) down, be located at the back and descend to carry back lower transverse beam (16) on the load (18);
4, according to claim 1 and 2ly be used for the rear fulcrum long cantilever Hanging Basket system that stayed-cable bridge cantilever is built, it is characterized in that: basket of the described end and template system comprise the i iron longeron (24) that is located on preceding lower transverse beam (14) and back lower transverse beam (16), be located at transverse distribution beam (25) on the i iron longeron, be located at vertical distribution beam (26) on the transverse distribution beam, be located at the template (27) on vertical distribution beam, and select for use 7 i iron longerons (24) spreading as sliding beam (31); Every sliding beam is provided with two sliding beam dollies (30), and the upper end of sliding beam dolly (30) is anchored in the concrete of having built; Also comprise the draw-gear (33) that is located at the Hanging Basket between main fulcrum and the walking backbone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200999449U CN201250385Y (en) | 2008-09-10 | 2008-09-10 | Rear support long cantilevered traveling carriage system for cable-stayed bridge cantilever casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200999449U CN201250385Y (en) | 2008-09-10 | 2008-09-10 | Rear support long cantilevered traveling carriage system for cable-stayed bridge cantilever casting |
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| CN201250385Y true CN201250385Y (en) | 2009-06-03 |
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| CNU2008200999449U Expired - Fee Related CN201250385Y (en) | 2008-09-10 | 2008-09-10 | Rear support long cantilevered traveling carriage system for cable-stayed bridge cantilever casting |
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| CN101994294A (en) * | 2010-03-05 | 2011-03-30 | 安通建设有限公司 | Casting construction of triangular light hanging basket cantilever for highway engineering |
| CN101881001A (en) * | 2010-06-08 | 2010-11-10 | 重庆城建控股(集团)有限责任公司 | Cradle stress and deformation early warning system |
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| CN109654295A (en) * | 2018-12-26 | 2019-04-19 | 中交第二公路勘察设计研究院有限公司 | The interim thrust block of elbow access point and its construction method and design method |
| CN109654295B (en) * | 2018-12-26 | 2023-10-20 | 中交第二公路勘察设计研究院有限公司 | Temporary thrust block for elbow access point, construction method and design method thereof |
| CN110700096A (en) * | 2019-08-30 | 2020-01-17 | 中铁十四局集团第四工程有限公司 | Quick construction method for suspension irrigation continuous beam |
| CN112942132A (en) * | 2021-04-01 | 2021-06-11 | 中交二航局第二工程有限公司 | Front supporting point composite hanging basket and shifting method thereof |
| CN112942132B (en) * | 2021-04-01 | 2022-11-22 | 中交二航局第二工程有限公司 | Front supporting point composite hanging basket and shifting method thereof |
| CN118422598A (en) * | 2024-07-05 | 2024-08-02 | 贵州交通建设集团有限公司 | Integral cast-in-situ construction method for arched girder combined bridge based on hanging basket with hoisting function |
| CN118422597A (en) * | 2024-07-05 | 2024-08-02 | 贵州交通建设集团有限公司 | Cast-in-situ construction method for arched girder combined bridge segments based on hanging basket with hoisting function |
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