CN109868749B - Wind-resistant locking device for erecting closure openings one by one through steel trussed beams and using method - Google Patents

Wind-resistant locking device for erecting closure openings one by one through steel trussed beams and using method Download PDF

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Publication number
CN109868749B
CN109868749B CN201910198903.8A CN201910198903A CN109868749B CN 109868749 B CN109868749 B CN 109868749B CN 201910198903 A CN201910198903 A CN 201910198903A CN 109868749 B CN109868749 B CN 109868749B
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China
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span
sleeve
steel truss
truss girder
wind
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CN109868749A (en
Inventor
徐平安
毛伟琦
涂满明
卢鹏
黄晓剑
李方峰
刘建华
潘军
余本俊
孙刘洋
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China Railway Major Bridge Engineering Group Co Ltd
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China Railway Major Bridge Engineering Group Co Ltd
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Abstract

The invention discloses a wind-resistant locking device and method for erecting closure openings one by one on steel trusses, which are used for temporarily locking an erected A-span steel truss and a B-span steel truss to be erected, and comprise two telescopic arms, a rear cross beam and two pushing mechanisms; the two telescopic arms are respectively arranged at two sides of the diagonal rod of the A-span steel truss beam along the longitudinal bridge direction, and each telescopic arm comprises an outer sleeve, an inner sleeve and a driving mechanism; the outer sleeve is arranged on a span A lower chord of the span A steel truss girder; the inner sleeve part is positioned in the outer sleeve; the driving mechanism is arranged in the outer sleeve, connected with the inner sleeve and used for driving the inner sleeve to move along the longitudinal bridge direction; the rear cross beam is connected with the two outer sleeves; a containing area for containing a B-span lower chord of the B-span steel truss girder is formed between the inner sleeves of the two telescopic arms; one end of each of the two pushing mechanisms is fixed on the two inner sleeves and located outside the outer sleeve, and the other end of each of the two pushing mechanisms can extend or retract towards the containing area along the transverse bridge. The invention can improve the integral wind resistance of the steel truss girder during the erection period.

Description

Wind-resistant locking device for erecting closure openings one by one through steel trussed beams and using method
Technical Field
The invention relates to the technical field of construction of a steel truss girder hole-by-hole frame facility in an upper structure of bridge engineering, in particular to a wind-resistant locking device for a steel truss girder hole-by-hole frame closing opening and a using method thereof.
Background
In the existing bridge engineering superstructure construction, a common multi-span multi-connected large-span steel truss girder hole-by-hole erection method comprises the following steps: the long-span steel truss girder is transported to a to-be-erected hole site after being longitudinally moved and transversely moved to a wharf below the steel truss girder by a girder transporting trolley, the first span steel truss girder in a first connection is directly erected by a large floating crane, and the rest span steel truss girders except the first span are installed hole by diamond-shaped steel girder hanging frames in an auxiliary mode until the steel truss girder in the first connection is erected.
However, in 3-10 months each year, unpredictable hurricanes or squall winds frequently occur in bridge site areas, the highest wind speed in 10 years in the steel truss erecting stage reaches 39.25m/s, and on one hand, the super squall winds damage the steel truss wharf and the large floating crane; on the other hand, when the steel truss girder to be erected and the erected steel truss girder are subjected to a folding and butt joint process, the folding and butt joint process has weak wind resistance, poor stability and low folding and butt joint safety.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a wind-resistant locking device for erecting a closure opening by a steel truss hole by hole, which can improve the overall wind-resistant capacity of the steel truss during erection and ensure the beam erection safety during hurricane or squall line wind.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a steel longeron erects to close mouthful wind-resistant locking device hole by hole, it is used for carrying out interim locking with the B span steel longeron that waits to erect A span steel longeron that has erect, it includes:
two flexible arms, it is along indulging the bridge to arranging respectively in A strides the down tube both sides of steel longeron, flexible arm includes:
-an outer sleeve placed on the a-span lower chord of the a-span steel truss;
-an inner sleeve partially located within the outer sleeve;
-a drive mechanism disposed within the outer sleeve and connected to the inner sleeve for driving the inner sleeve in a longitudinal bridging direction;
the rear cross beam is connected with the two outer sleeves;
a containing area for containing a B-span lower chord of the B-span steel truss girder is formed between the inner sleeves of the two telescopic arms;
one end of each of the two pushing mechanisms is fixed on the two inner sleeves and located outside the outer sleeve, and the other end of each of the two pushing mechanisms can extend or retract towards the containing area along the transverse bridge.
Furthermore, the two outer sleeves are connected through a connecting system, and the rear cross beam and the connecting system are arranged at intervals.
Furthermore, a reaction seat is arranged in the outer sleeve, and the driving mechanism is connected with the reaction seat.
Furthermore, the jacking mechanism adopts a jack, the jack is connected with the inner sleeve, and the power output end of the jack is used for abutting against the B-span lower chord.
Furthermore, one end of the inner sleeve, which is far away from the outer sleeve, extends from the top surface of the A-span lower chord to the bottom surface to form an extending part, and the pushing mechanism is connected with the extending part and is positioned below the top surface of the A-span lower chord.
Furthermore, the outer sleeve and the inner sleeve are respectively provided with a hole for leading out an oil pipe of the driving mechanism and a hole for leading out an oil pipe of the pushing mechanism.
Furthermore, the wind-resistant locking device also comprises a control system, and the control system is connected with the driving mechanism and the pushing mechanism and is used for controlling the driving mechanism and the pushing mechanism to respectively execute corresponding actions.
The invention also provides a use method of the wind-resistant locking device, which comprises the following steps:
assembling the wind-resistant locking device at the end of the closure opening of the A-span steel truss girder;
hoisting the B-span steel truss girder to align the closure port of the B-span steel truss girder with the closure port of the A-span steel truss girder;
the driving mechanism drives the inner sleeve to enable the two pushing mechanisms to be respectively positioned at two sides of the cross bridge direction of the B-span lower chord;
and starting the two pushing mechanisms to respectively abut against two sides of the cross bridge of the B-span lower chord to finish temporary locking.
Further, after the temporary locking is completed, the method also comprises the following steps:
and after the closure of the B-span steel truss girder and the A-span steel truss girder is finished, the temporary locking is released.
Furthermore, in the step of lifting the B-span steel truss girder to align the closure port of the B-span steel truss girder with the closure port of the A-span steel truss girder, the step of adjusting the position of the closure port of the B-span steel truss girder through the two pushing mechanisms is also included.
Compared with the prior art, the invention has the advantages that:
(1) the wind-resistant locking device can be used for temporarily locking the closure opening of the A-span steel truss girder and the closure opening of the B-span steel truss girder, so that the A-span steel truss girder and the B-span steel truss girder are connected into a whole, the integral wind resistance during girder erection is improved, the structural safety of the B-span steel truss girder, the rhombic steel girder hanger and the like is ensured, and a stable operation surface is provided for welding the closure opening of the A-span steel truss girder lower chord and the B-span steel truss girder lower chord.
(2) The wind-resistant locking device for erecting the closure openings one by one on the steel trussed beam has the function of adjusting the closure alignment of the lower chord of the B-span steel trussed beam, so that a pushing device for adjusting the closure openings of the lower chord is not required to be additionally arranged.
(3) The wind-resistant locking method for erecting the closure openings one by one through the steel trussed beams is safe and efficient, extra parts are not needed, the structure is simple, and the use is convenient and rapid.
Drawings
FIG. 1 is an elevational view of a wind-resistant locking apparatus provided in accordance with an embodiment of the present invention;
fig. 2 is a plan view of the wind-resistant locking device according to the embodiment of the present invention.
In the figure: 1. a, spanning a steel truss girder; 10. a diagonal bar; 11. a spans the lower chord; 2. b, spanning a steel truss girder; 20. b, spanning the lower chord; 3. a telescopic arm; 30. an outer sleeve; 31. an inner sleeve; 310. an extension portion; 32. a drive mechanism; 4. a rear cross member; 5. a housing area; 6. a pushing mechanism; 7. a counter-force seat; 8. a pin shaft; 9. the connection system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 and 2, an embodiment of the invention provides a wind-resistant locking device for erecting a closure gap of a steel truss hole by hole, which is used for temporarily locking an erected a-span steel truss 1 and a to-be-erected B-span steel truss 2, and comprises two telescopic arms 3, a rear cross beam 4 and two pushing mechanisms 6;
referring to fig. 1 and 2, two telescopic booms 3 are respectively arranged on both sides of the diagonal rod 10 of the a-span steel truss 1 along the longitudinal bridge direction, and each telescopic boom 3 comprises an outer sleeve 30, an inner sleeve 31 and a driving mechanism 32.
The outer sleeve 30 in the embodiment is U-shaped, the U-shaped single limb is of a box-shaped structure and is formed by welding steel plates with the thickness of 12-16 mm, and the U-shaped single limbs are connected through a box-shaped structure connection system; the outer sleeve 30 is arranged on the A-span lower chord 11 of the A-span steel truss girder 1, one end of the inner sleeve 31 is positioned in the outer sleeve 30, and the other end of the inner sleeve extends out of the outer sleeve 30; the driving mechanism 32 is arranged in the outer sleeve 30, the power output end of the driving mechanism is connected with the inner sleeve 31, and the driving mechanism 32 can drive the inner sleeve 31 to move along the longitudinal bridge direction, so that the part, outside the outer sleeve 30, of the inner sleeve 31 can move towards the direction close to the B-span lower chord 20 of the B-span steel truss girder 2 and move towards the direction far away from the B-span lower chord 20 of the B-span steel truss girder 2;
as shown in fig. 1 and 2, two ends of the rear cross beam 4 are respectively connected with two outer sleeves 30;
as shown in fig. 2, a receiving area 5 for receiving the B-span lower chord 20 of the B-span steel truss girder 2 is formed between the inner sleeves 31 of the two telescopic arms 3; one end of each of the two pushing mechanisms 6 is fixed on the two inner sleeves 31 and located outside the corresponding outer sleeve 30, and the other end of each of the two pushing mechanisms 6 can extend or retract towards the accommodating area 5 along the transverse bridge direction, so that when the B-span lower chord 20 is located in the accommodating area 5, the two pushing mechanisms 6 extend along the transverse bridge direction and abut against two sides of the B-span lower chord 20 respectively, and the B-span lower chord 20 is locked.
When the installation is carried out, the outer sleeve 30 is closely attached to the outer surface of the inclined rod 10 of the end node of the A-span steel truss girder 1, the rear cross beam 4 is closely attached to the inclined rod 10 of the end node of the A-span steel truss girder 1, and if a gap exists, a thin steel plate cushion can be adopted.
After the B-span steel truss girder is hung by the rhombic steel girder hanging bracket, the A-span steel truss girder closing opening and the B-span steel truss girder closing opening can be temporarily locked by using the wind-resistant locking device, so that the A-span steel truss girder and the B-span steel truss girder are connected into a whole, the integral wind resistance during girder erection is improved, the structural safety of the B-span steel truss girder, the rhombic steel girder hanging bracket and the like is ensured, and a stable operation surface is provided for welding the A-span steel truss girder lower chord and the B-span steel truss girder lower chord closing opening.
In order to use local materials, the pushing mechanism 6 adopts a jack which is connected with the inner sleeve 31, and the power output end of the jack is used for abutting against the B-span lower chord 20; in this embodiment, the pushing mechanism 6 is disposed in the inner sleeve 31. Of course, the driving mechanism 32 may be a jack.
In a state where the inner sleeve 31 is retracted without the temporary locking, one end of the inner sleeve 31 located outside the outer sleeve 30 does not contact the B-span lower chord 20; in the locked state, the length of the B-span lower chord 20 in the receiving area 5 is greater than the diameter of the jack used by the pushing mechanism 6, so as to ensure that the jack can lock the B-span lower chord 20.
The maximum travel of the drive mechanism 32 is greater than the length of the inner sleeve 31 that can extend into the outer sleeve 30 in the retracted state and the locked state.
Referring to fig. 1 and 2, the two outer sleeves 30 are further connected by a connecting system 9, in this embodiment, a connecting system with a box-type structure is adopted, and the rear cross beam 4 and the connecting system 9 are arranged at intervals, so that when the locking device is used, the rear cross beam 4 and the connecting system 9 are respectively arranged on two sides of the diagonal rod 10 along the longitudinal bridge direction and are abutted against the diagonal rod 10. The inclined rod 10 is used as a force bearing mechanism, the inclined rod 10 is supported through the rear cross beam 4 and the connecting system 9, after the B-span lower chord 20 is locked, if a strong wind condition occurs, the force such as torsion force generated by the strong wind of the B-span lower chord 20 can be transmitted to the inclined rod 10 and finally transmitted to the A-span steel truss girder 1, and therefore safety and stability of the wind-resistant locking device are guaranteed.
Referring to fig. 1, the outer sleeve 30 is provided with a reaction force seat 7 therein, and a driving mechanism 32 is connected to the reaction force seat 7. Specifically, the driving mechanism 32 is connected at both ends thereof to the reaction force seat 7 and the inner sleeve 31 by the pin 8, respectively.
Referring to fig. 1, an end of the inner sleeve 31 away from the outer sleeve 30 extends from the top surface to the bottom surface of the a-span lower chord 11 to form an extension 310, and the pushing mechanism 6 is connected to the extension 310 and located below the top surface of the a-span lower chord 11.
The outer sleeve 30 and the inner sleeve 31 are respectively provided with a hole for leading out an oil pipe of the driving mechanism 32 and a hole for leading out an oil pipe of the pushing mechanism 6.
The wind-resistant locking device further comprises a control system, wherein the control system is connected with the driving mechanism 32 and the pushing mechanism 6 and is used for controlling the driving mechanism 32 and the pushing mechanism 6 to respectively execute corresponding actions.
The embodiment of the invention also provides a using method of the wind-resistant locking device, which comprises the following steps:
s1: assembling a wind-resistant locking device at the end of the closure opening of the A-span steel truss girder 1, and retracting the inner sleeve 31 into the outer sleeve 30;
s2: installing a rhombic steel girder hanging bracket at the end of the upper chord of the span A steel truss girder 1, and enabling a large-scale floating crane ship to hoist the span B steel truss girder 2 to enable a closure port of the span B steel truss girder 2 to be aligned with a closure port of the span A steel truss girder 1;
s3: the driving mechanism 32 drives the inner sleeve 31 to the two pushing mechanisms 6 to be respectively positioned at two sides of the cross bridge direction of the B-span lower chord 20;
s4: starting the two pushing mechanisms 6 to respectively abut against two sides of the cross bridge direction of the B-span lower chord 20 to finish temporary locking;
s5: and welding the closure port of the B-span steel truss girder 2 and the closure port of the A-span steel truss girder 1, and removing the temporary locking after the closure of the B-span steel truss girder 2 and the A-span steel truss girder 1 is finished.
In the step of hoisting the B-span steel truss girder 2 to the step of aligning the closure opening of the B-span steel truss girder 2 with the closure opening of the A-span steel truss girder 1, if necessary, the method further comprises the step of adjusting the closure opening position of the B-span steel truss girder 2 through two pushing mechanisms 6. Specifically, the pushing mechanism 6 is started to accurately adjust the closing opening position of the B span lower chord 20, so that the B span lower chord 20 is accurately aligned with the closing opening of the A span lower chord 11. Therefore, the wind-resistant locking device simultaneously has the function of adjusting the closure alignment of the lower chord of the B-span steel truss girder, and a pushing device for adjusting the closure opening of the lower chord is not required to be additionally arranged.
The wind-resistant locking method for erecting the closure openings one by one through the steel trussed beams is safe and efficient, does not need extra parts, and is simple in structure and convenient and fast to use.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims (10)

1. A steel longeron erects to close a mouthful wind-resistant locking device hole by hole, its B that is used for striding steel longeron (2) with the A that has erect strides steel longeron (1) and treating to erect carries out interim locking, its characterized in that, it includes:
two telescopic booms (3), it arranges respectively in A along the longitudinal bridge to striding down tube (10) both sides of steel truss (1), telescopic boom (3) include:
-an outer sleeve (30) placed on the a-span lower chord (11) of the a-span steel truss (1);
-an inner sleeve (31) partially located within the outer sleeve (30);
-a drive mechanism (32) arranged inside the outer sleeve (30) and connected to the inner sleeve (31) for driving the inner sleeve (31) in a longitudinal bridging direction;
a rear cross member (4) connecting the two outer sleeves (30);
a containing area (5) for containing a B-span lower chord (20) of the B-span steel truss girder (2) is formed between the inner sleeves (31) of the two telescopic arms (3);
one ends of the two pushing mechanisms (6) are respectively fixed on the two inner sleeves (31) and positioned outside the outer sleeve (30), and the other ends of the two pushing mechanisms (6) can extend or retract towards the containing area (5) along the transverse bridge direction.
2. The wind resistant locking apparatus of claim 1 wherein: the two outer sleeves (30) are further connected through a connecting system (9), and the rear cross beam (4) and the connecting system (9) are arranged at intervals.
3. The wind resistant locking apparatus of claim 1 wherein: a reaction force seat (7) is arranged in the outer sleeve (30), and the driving mechanism (32) is connected with the reaction force seat (7).
4. The wind resistant locking apparatus of claim 1 wherein: the pushing mechanism (6) adopts a jack, the jack is connected with the inner sleeve (31), and the power output end of the jack is used for abutting against the B-span lower chord (20).
5. The wind resistant locking apparatus of claim 1 wherein: one end, far away from the outer sleeve (30), of the inner sleeve (31) extends from the top surface to the bottom surface of the A-span lower chord (11) to form an extending part (310), and the pushing mechanism (6) is connected with the extending part (310) and is located below the top surface of the A-span lower chord (11).
6. The wind resistant locking apparatus of claim 1 wherein: and the outer sleeve (30) and the inner sleeve (31) are respectively provided with a hole for leading out an oil pipe of the driving mechanism (32) and a hole for leading out an oil pipe of the pushing mechanism (6).
7. The wind resistant locking apparatus of claim 1 wherein: the wind-resistant locking device further comprises a control system, and the control system is connected with the driving mechanism (32) and the pushing mechanism (6) and is used for controlling the driving mechanism (32) and the pushing mechanism (6) to respectively execute corresponding actions.
8. A method of using a wind-resistant locking arrangement as claimed in claim 1, including the steps of:
assembling the wind-resistant locking device at the closure port end of the A-span steel truss girder (1);
hoisting the B-span steel truss girder (2) until the closure port of the B-span steel truss girder (2) is aligned with the closure port of the A-span steel truss girder (1);
the driving mechanism (32) drives the inner sleeve (31) to two pushing mechanisms (6) to be respectively positioned at two sides of the transverse bridge direction of the B-span lower chord (20);
and starting the two pushing mechanisms (6) to respectively abut against two sides of the cross bridge direction of the B-span lower chord (20) to finish temporary locking.
9. Use according to claim 8, characterized in that it comprises, after the temporary locking has been completed, the following further steps:
and after the closure of the B-span steel truss girder (2) and the A-span steel truss girder (1) is finished, the temporary locking is released.
10. Use according to claim 8, characterized in that: in the step of hoisting the B-span steel truss girder (2) to the step of aligning the closure opening of the B-span steel truss girder (2) with the closure opening of the A-span steel truss girder (1), the method further comprises the step of adjusting the closure opening position of the B-span steel truss girder (2) through the two pushing mechanisms (6).
CN201910198903.8A 2019-03-15 2019-03-15 Wind-resistant locking device for erecting closure openings one by one through steel trussed beams and using method Active CN109868749B (en)

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CN111519538A (en) * 2020-04-17 2020-08-11 中铁大桥局集团有限公司 Hole-by-hole erection method for large-span continuous steel truss girder

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
CN101130943A (en) * 2007-08-13 2008-02-27 中铁大桥勘测设计院有限公司 Pin-and-hole auxiliary closure method for steel girder bridge
KR20090109260A (en) * 2008-04-15 2009-10-20 삼성물산 주식회사 Construction method for joint of cantilever using horizontal brace and construction method for girder of bridge using the same
CN101435182B (en) * 2008-12-30 2010-09-15 中铁大桥局股份有限公司 Steel bridge folding temporary locking method
CN102776841A (en) * 2012-08-02 2012-11-14 贵州桥梁建设集团有限责任公司 Long-span steel truss suspension bridge jointing method and device
CN102888814B (en) * 2012-10-16 2014-09-03 上海城建市政工程(集团)有限公司 Construction method of continuous rigid frame bridge pushing closure
CN102966184A (en) * 2012-12-03 2013-03-13 中建一局钢结构工程有限公司 Reserving fold belt device for long-span steel structure truss and construction method of reserving fold belt
CN103290785B (en) * 2013-06-30 2015-07-01 中铁一局集团有限公司 Closure method for height variable continuous steel truss girder
JP6822726B2 (en) * 2016-06-22 2021-01-27 ニッタ株式会社 Mounting aids and telescopic devices
CN106193622B (en) * 2016-07-29 2018-04-10 中国一冶集团有限公司 H profile steel beam docks node locating installation method
CN108457191A (en) * 2018-01-31 2018-08-28 中交第二航务工程局有限公司 Large span T-steel structure beam sections for joining island bridge install closure method
CN109252446B (en) * 2018-08-28 2020-07-10 中交武汉港湾工程设计研究院有限公司 Steel box girder longitudinal pushing closure construction device and construction method thereof
CN109371848A (en) * 2018-12-10 2019-02-22 中交四公局第五工程有限公司 The longitudinal temporary connecting structure and method of suspension bridge concrete stiffening girder installation

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