CN104213501B - A kind of cable-stayed type bent unlatching trestle work structure construction method - Google Patents
A kind of cable-stayed type bent unlatching trestle work structure construction method Download PDFInfo
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Abstract
本发明公开了一种斜拉式可弯折开启栈桥结构施工方法，方法为：在设定的桥面位置每一侧分别设置两组格构柱，在每一个格构柱顶端安装分配底座，再在每一个分配底座上安装卷扬机；在两侧格构柱的内侧插打固定支撑桩；在同侧两组格构柱之间插打排架墩管桩；在每侧的多根排架墩管桩桩顶上吊放一根工字钢横梁；在每侧的工字钢横梁上安装一个单侧桥梁上部结构；与一侧的四台卷扬机中两台相连的前斜拉索的拉力端固定在同侧的前开启段的前端部并且与该侧的另外两台卷扬机相连的后斜拉索的拉力端固定在该侧的后开启段的前端。采用本方法通过斜拉体系弯折结构的设计消除了航道的通航净空限制，在船体宽度允许条件下可保证大型船舶通过。
The invention discloses a construction method of a cable-stayed bendable trestle structure. The method is as follows: two groups of lattice columns are respectively arranged on each side of a set bridge deck position, and a distribution base is installed on the top of each lattice column. Then install hoists on each distribution base; insert and drive fixed support piles inside the lattice columns on both sides; insert and drive bent pier pipe piles between the two sets of lattice columns on the same side; multiple bent frames on each side An I-steel beam is suspended on the top of the pier piles; a single-sided bridge superstructure is installed on each side of the I-steel beam; the tension end of the front stay cable connected to two of the four winches on one side Be fixed on the front end of the front opening section of the same side and be fixed on the front end of the back opening section of this side with the tension end of the rear stay cable that links to each other with the other two winches of this side. The design of the bending structure of the cable-stayed system by this method eliminates the limitation of the navigation clearance of the channel, and can ensure the passage of large ships under the condition of the allowable hull width.
Description
技术领域technical field
本发明涉及桥梁工程施工领域，具体来说涉及一种用于有通航需求的桥梁施工中栈桥的结构及施工方法。The invention relates to the field of bridge engineering construction, in particular to a structure and a construction method of a trestle used in the construction of bridges requiring navigation.
背景技术Background technique
目前公知的在有通航需求的水域进行桥梁施工时主要采用门式结构栈桥方式，该种施工方法仅能允许小型、低矮的船舶通过，且如通航净空过大则会对桥梁两侧施工造成影响，使交通不便，不利于施工机械、材料的周转。此外，公开号CN202369929U和CN202688850U的专利中公开了一种提升装置，该装置仅可提供有限的通航净空，其通航净空的高度极限为其设置的格构柱的高出水面的高度与便桥高度之差。At present, the known bridge construction in waters with navigation needs mainly adopts the portal structure trestle method. This construction method can only allow small and low ships to pass through, and if the navigation clearance is too large, it will cause damage to the construction on both sides of the bridge. The impact makes the transportation inconvenient, which is not conducive to the turnover of construction machinery and materials. In addition, patents with publication numbers CN202369929U and CN202688850U disclose a lifting device that can only provide limited navigation clearance, and the height limit of the navigation clearance is the difference between the height of the lattice column above the water surface and the height of the temporary bridge. Difference.
发明内容Contents of the invention
本发明的目的在于克服已有技术的不足，提供一种通航宽度宽并且能够提供无限的通航净空，同时能够保证栈桥复原后结构表面的平坦的一种斜拉式可弯折开启栈桥结构施工方法。The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a cable-stayed, bendable and open trestle structure construction method that has a wide navigation width and can provide unlimited navigation clearance, and at the same time can ensure the flatness of the structure surface after the restoration of the trestle. .
为达到上述目的，本发明采用下述技术方案：To achieve the above object, the present invention adopts the following technical solutions:
一种斜拉式可弯折开启栈桥结构施工方法，它包括沿纵桥向桥两侧间隔设置的四组用于竖向承重的格构柱，每一组格构柱的4根钢管之间焊接固定相连,在每一组格构柱的顶部固定有分配底座,在两侧格构柱的内侧分别打设有支撑桩，在同侧两组格构柱之间设置有至少一个加强排架临时墩，所述的加强排架临时墩包括插打在同侧两组格构柱之间的多根排架墩管桩，所述的排架墩管桩之间焊接相连，在同侧的多根排架墩管桩桩顶焊接固定一根工字钢横梁,两个相同的单侧桥梁上部结构组成一个可以开启的整体桥梁上部结构，每一个单侧桥梁上部结构均包括多个彼此相连的贝雷片，在所述的贝雷片的上弦杆上固定有多根间隔设置的横向工字钢，在所述的横向工字钢上固定有多根间隔设置的纵向工字钢，在所述的纵向工字钢上固定有桥面系结构，所述的多个彼此相连的贝雷片包括通过贝雷片的加强弦杆焊接固定在相应侧的工字钢横梁上的固定段，所述的固定段前端通过转铰与向桥中央延伸的后开启段后端相连，所述的后开启段前端通过转铰与向桥中央延伸的前开启段后端相连，所述的后开启段后端和前端分别支撑在工字钢横梁上以及支撑桩上，所述的桥两侧的前开启段的前端在栈桥结构放平时采用销栓进行连接，在每一个分配底座上均固定有四台卷扬机，在每一个格构柱的内侧分别设置有上、下限位横梁，与一侧的四台卷扬机中的两台相连的前斜拉索的拉力端固定在同侧的前开启段的前端，并且与该侧的另外两台卷扬机相连的后斜拉索的拉力端固定在该侧的后开启段的前端，所述的前开启段能够在卷扬机的带动下翻转支撑在上限位横梁上，所述的后开启段能够在卷扬机的带动下翻转支撑在下限位横梁上；A construction method for a cable-stayed bendable open trestle bridge structure, which includes four sets of lattice columns for vertical load-bearing arranged at intervals along the longitudinal bridge to both sides of the bridge, and the four steel pipes of each set of lattice columns Welding and fixed connection, a distribution base is fixed on the top of each group of lattice columns, supporting piles are respectively drilled on the inner sides of the lattice columns on both sides, and at least one reinforcing bent frame is arranged between the two groups of lattice columns on the same side Temporary piers, the reinforced bent temporary piers include a plurality of bent pier pipe piles inserted between two groups of lattice columns on the same side, the pipe piles of the bent piers are welded and connected, and the pipe piles of the bent piers on the same side A number of bent piers and pipe piles are welded and fixed on the top of an I-beam beam. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure includes multiple interconnected bridges. The Bailey sheet, on the upper chord of the Bailey sheet, a plurality of horizontal I-beams arranged at intervals are fixed, and a plurality of longitudinal I-beams arranged at intervals are fixed on the described transverse I-beams. The bridge deck structure is fixed on the longitudinal I-beam, and the plurality of Bailey sheets connected to each other include fixed sections fixed to the I-beam beams on the corresponding sides by welding the strengthening chords of the Bailey sheets. The front end of the fixed section is connected to the rear end of the rear opening section extending to the center of the bridge through a hinge, and the front end of the rear opening section is connected to the rear end of the front opening section extending to the center of the bridge through a hinge. The rear end and front end of the section are respectively supported on the I-beam beam and the supporting piles. The front ends of the front opening sections on both sides of the bridge are connected by pins when the trestle structure is laid out, and each distribution base is fixed with There are four winches, and upper and lower limit beams are arranged on the inner side of each lattice column, and the tension ends of the front stay cables connected to two of the four winches on one side are fixed at the front opening section on the same side. The front end, and the tension end of the rear stay cable connected to the other two winches on this side is fixed on the front end of the rear opening section on this side, and the front opening section can be turned over and supported on the upper limit beam under the drive of the winch , the rear opening section can be turned over and supported on the lower limit beam under the drive of the hoist;
上述结构的施工步骤如下:The construction steps of the above structure are as follows:
(1)在设定的桥面位置每一侧分别设置两组格构柱，每一组格构柱由4根钢管组成，每一组格构柱的4根钢管之间焊接固定相连，然后在每一组格构柱顶端安装分配底座，再在每一个分配底座上安装四台卷扬机并在每一组格构柱内侧上下间隔的分别焊接上、下限位横梁；(1) Set two sets of lattice columns on each side of the set bridge deck position, each set of lattice columns is composed of 4 steel pipes, and the 4 steel pipes of each set of lattice columns are welded and fixedly connected, and then Install a distribution base on the top of each group of lattice columns, and then install four hoists on each distribution base, and weld the upper and lower limit beams separately on the inner side of each group of lattice columns;
(2)在两侧格构柱的内侧顺桥向分别插打固定支撑桩至设定标高；(2) Insert and drive fixed support piles on the inner sides of the lattice columns on both sides along the bridge direction to the set elevation;
(3)在同侧两组格构柱之间插打排架墩管桩至设定标高，然后将所述的排架墩管桩之间焊接相连形成至少一个加强排架临时墩；(3) inserting bent-frame pier pipe piles between two groups of lattice columns on the same side to a set elevation, and then welding and connecting said bent-pier pipe piles to form at least one reinforced bent-frame temporary pier;
(4)在每侧的多根排架墩管桩桩顶上吊放一根工字钢横梁，工字钢横梁放置在排架墩管桩桩顶中心位置并调整水平后，将工字钢横梁与排架墩管桩桩顶焊接连接；(4) Place an I-steel crossbeam on the top of multiple bent pier pipe piles on each side. The I-steel crossbeam is placed Welded connection with the top of the pipe pile of the bent pier;
(5)在每侧的工字钢横梁上安装一个单侧桥梁上部结构，两个相同的单侧桥梁上部结构组成一个可以开启的整体桥梁上部结构，每一个单侧桥梁上部结构均包括多个彼此相连的贝雷片，所述的多个彼此相连的贝雷片包括通过贝雷片的加强弦杆设置在相应侧的工字钢横梁上的固定段；所述的固定段前端通过转铰与向桥中央延伸的后开启段后端相连，所述的后开启段后端和前端分别支撑在工字钢横梁上以及支撑桩上，所述的后开启段前端通过转铰与向桥中央延伸的前开启段后端相连，所述的桥两侧的前开启段的前端在栈桥结构放平时采用销栓进行临时连接；(5) Install a unilateral bridge superstructure on each side of the I-beam beam. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure includes multiple Bailey sheets connected to each other, the plurality of Bailey sheets connected to each other include a fixed section arranged on the I-beam beam on the corresponding side through the reinforcing chord of the Bailey sheet; the front end of the fixed section is passed through a hinge It is connected to the rear end of the rear opening section extending toward the center of the bridge. The rear end and front end of the rear opening section are respectively supported on the I-beam beam and the supporting pile. The front end of the rear opening section is connected to the center of the bridge through a hinge. The rear ends of the extended front opening sections are connected, and the front ends of the front opening sections on both sides of the bridge are temporarily connected by pins when the trestle structure is laid;
(6)在每一侧所述的贝雷片的上弦杆上铺设固定多根间隔设置的横向工字钢；(6) on the upper chord of the Bailey sheet described on each side, lay a plurality of transverse I-beams fixed at intervals;
(7)在横向工字钢上铺设多根间隔设置的纵向工字钢，横向工字钢和纵向工字钢相交部位采用满焊焊接固定，然后在所述的纵向工字钢上固定桥面系结构；(7) Lay a plurality of vertical I-beams arranged at intervals on the horizontal I-beams, the intersection of the horizontal I-beams and the longitudinal I-beams is fixed by full welding, and then the bridge deck is fixed on the longitudinal I-beams system structure;
(8)与一侧的四台卷扬机中的两台相连的前斜拉索的拉力端固定在同侧的前开启段的前端，并且与该侧的另外两台卷扬机相连的后斜拉索的拉力端固定在该侧的后开启段的前端，始终保持前斜拉索与同侧的前开启段相连，后斜拉索与同侧的后开启段相连。本发明的有益效果是：(8) The tension ends of the front stay cables connected to two of the four winches on one side are fixed at the front end of the front opening section on the same side, and the tension ends of the rear stay cables connected to the other two winches on this side are The tension end is fixed on the front end of the rear opening section on this side, keeps the front stay cable connected to the front opening section on the same side all the time, and the rear stay cable is connected to the rear opening section on the same side. The beneficial effects of the present invention are:
(1)通过斜拉体系弯折结构的设计消除了航道的通航净空限制，在船体宽度允许条件下可保证大型船舶通过。(1) The design of the bending structure of the cable-stayed system eliminates the limitation of the navigation clearance of the channel, and can ensure the passage of large ships under the condition of the hull width.
(2)采用斜拉弯折栈桥体系能够增大通行水道宽度。(2) The use of cable-stayed curved trestle system can increase the width of the passageway.
(3)能够确保施工栈桥在没有通航要求时的桥面平顺，能够保证大型车辆通过。(3) It can ensure that the bridge deck of the construction trestle bridge is smooth when there is no navigation requirement, and can ensure the passage of large vehicles.
(4)能够满足栈桥两侧施工的机械、材料等转运的需要。(4) It can meet the needs of the transfer of machinery and materials for construction on both sides of the trestle bridge.
(5)结构采用焊接和栓接相结合的形式进行连接，整体性好，能够适应开启体系的结构要求。(5) The structure is connected by a combination of welding and bolting, which has good integrity and can adapt to the structural requirements of the opening system.
(6)结构为装配式，可拆卸和重复利用。(6) The structure is assembled, detachable and reusable.
(7)采用卷扬机进行牵拉，能够准确控制结构开启精度。(7) The hoist is used for pulling, which can accurately control the opening precision of the structure.
附图说明Description of drawings
图1为本发明一种斜拉式可弯折开启栈桥结构施工方中涉及的结构示意图。Fig. 1 is a schematic diagram of the structure involved in the construction of a cable-stayed bendable open trestle structure according to the present invention.
图2为本发明一种斜拉式可弯折开启栈桥结构施工方中涉及的栈桥未开启状态示意图。Fig. 2 is a schematic diagram of the unopened state of the trestle involved in the construction of a cable-stayed bendable open trestle structure according to the present invention.
图3为本发明一种斜拉式可弯折开启栈桥结构施工方中涉及的转铰的示意图。Fig. 3 is a schematic diagram of a hinge involved in the construction of a cable-stayed bendable open trestle structure according to the present invention.
图4为本发明一种斜拉式可弯折开启栈桥结构施工方中涉及的栈桥上部结构示意图。Fig. 4 is a schematic diagram of the upper structure of the trestle involved in the construction of a cable-stayed bendable openable trestle structure according to the present invention.
图5为本发明一种斜拉式可弯折开启栈桥结构施工方中涉及的加强排架临时墩的结构示意图。Fig. 5 is a structural schematic diagram of a reinforced bent temporary pier involved in the construction of a cable-stayed bendable open trestle structure according to the present invention.
具体实施方式detailed description
下面结合附图和具体实施例对本发明的使用作进一步说明。The use of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
如附图所示的本发明的一种斜拉式可弯折开启栈桥结构，它包括沿纵桥向桥两侧间隔设置的四组用于竖向承重的格构柱1。每一组格构柱1的4根钢管之间焊接固定相连，优选的每一组格构柱1的4根钢管之间的上部和下部分别通过斜撑和横撑2结构焊接相连。在每一组格构柱1的顶部固定有分配底座3，在两侧格构柱1的内侧分别打设有支撑桩9，在同侧两组格构柱1之间设置有至少一个加强排架临时墩22，作为本发明的一种实施方式，所述的加强排架临时墩22包括插打在同侧两组格构柱1之间的多根排架墩管桩24，所述的排架墩管桩24之间焊接相连，优选的排架墩管桩24之间采用上下间隔设置的钢管23进行水平向焊接相连，并采用槽钢21在上下钢管23之间将相邻的排架墩管桩24剪刀向焊接相连。在同侧的多根排架墩管桩24桩顶焊接固定一根工字钢横梁13，两个相同的单侧桥梁上部结构组成一个可以开启的整体桥梁上部结构，每一个单侧桥梁上部结构均包括多个彼此相连的贝雷片14，贝雷片14之间通常采用定型支撑片16相连。在所述的贝雷片14的上弦杆上固定有多根间隔设置的横向工字钢17，在所述的横向工字钢17上固定有多根间隔设置的纵向工字钢18，在所述的纵向工字钢18上固定有桥面系结构，所述的桥面系结构通常包括安装在所述的纵向工字钢18上的作为桥面的压花钢板19，在所述的压花钢板19上固定有栏杆20。所述的多个彼此相连的贝雷片14包括通过贝雷片的加强弦杆15焊接固定在相应侧的工字钢横梁13上的固定段，所述的固定段前端通过转铰12与向桥中央延伸的后开启段8后端相连，所述的后开启段8前端通过转铰12与向桥中央延伸的前开启段7后端相连，所述的后开启段8后端和前端分别支撑在工字钢横梁13上以及支撑桩9上，所述的桥两侧的前开启段7的前端在栈桥结构放平时采用销栓进行连接，在每一个分配底座3上均固定有四台卷扬机4，在每一个格构柱的内侧分别设置有上、下限位横梁10，与一侧的四台卷扬机4中的两台相连的前斜拉索5的拉力端固定在同侧的前开启段7的前端,并且与该侧的另外两台卷扬机4相连的后斜拉索6的拉力端固定在该侧的后开启段8的前端，所述的前开启段7能够在卷扬机4的带动下翻转支撑在上限位横梁上，所述的后开启段8能够在卷扬机4的带动下翻转支撑在下限位横梁上。As shown in the accompanying drawings, a cable-stayed foldable open trestle structure of the present invention includes four groups of lattice columns 1 for vertical load-bearing arranged at intervals along the longitudinal bridge to both sides of the bridge. The 4 steel pipes of each group of lattice columns 1 are fixedly connected by welding, preferably the upper and lower parts of the 4 steel pipes of each group of lattice columns 1 are connected by structural welding of diagonal braces and cross braces 2 respectively. A distribution base 3 is fixed on the top of each group of lattice columns 1, and support piles 9 are drilled on the inner sides of the lattice columns 1 on both sides, and at least one reinforcing row is arranged between two groups of lattice columns 1 on the same side. Frame temporary pier 22, as an embodiment of the present invention, said reinforced bent frame temporary pier 22 includes a plurality of bent frame pier pipe piles 24 inserted between two groups of lattice columns 1 on the same side, said The pipe piles 24 of the bent pier are welded and connected, and the steel pipes 23 arranged at intervals up and down are preferably used for horizontal welding and connection between the pipe piles 24 of the bent pier, and channel steel 21 is used to connect the adjacent rows of steel pipes 23 between the upper and lower steel pipes 23. The 24 scissors of the pier pipe pile are connected to each other by welding. An I-beam beam 13 is welded and fixed on the pile tops of multiple bent pier piles 24 on the same side. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure Each includes a plurality of Bailey sheets 14 connected to each other, and the Bailey sheets 14 are usually connected by a shaped support sheet 16 . On the upper chord of the Bailey sheet 14, a plurality of horizontal I-beams 17 arranged at intervals are fixed, and a plurality of longitudinal I-beams 18 arranged at intervals are fixed on the described transverse I-beams 17. A bridge deck system structure is fixed on the longitudinal I-beam 18, and the bridge deck system generally includes an embossed steel plate 19 installed on the longitudinal I-beam 18 as a bridge deck. Railing 20 is fixed on flower plate 19. The plurality of Bailey sheets 14 connected to each other includes a fixed section that is welded and fixed on the I-beam beam 13 on the corresponding side through the reinforcing chord 15 of the Bailey sheet. The rear end of the rear opening section 8 extending from the center of the bridge is connected to each other. The front end of the rear opening section 8 is connected to the rear end of the front opening section 7 extending to the center of the bridge through a hinge 12. The rear end and front end of the rear opening section 8 are respectively Supported on the I-beam beam 13 and the supporting pile 9, the front ends of the front opening sections 7 on both sides of the bridge are connected by pins when the trestle structure is laid flat, and four distribution bases 3 are fixed on each The winches 4 are respectively provided with upper and lower limit beams 10 on the inner side of each lattice column, and the tension ends of the front stay cables 5 connected to two of the four winches 4 on one side are fixed on the front opening of the same side. section 7, and the tension end of the rear stay cable 6 connected to the other two winches 4 on this side is fixed on the front end of the rear opening section 8 on this side, and the front opening section 7 can be driven by the hoisting machine 4 The downturn is supported on the upper limit beam, and the rear opening section 8 can be turned over and supported on the lower limit beam under the drive of the hoist 4 .
一种斜拉式可弯折开启栈桥结构施工方法，它包括以下步骤：A cable-stayed bendable open trestle structure construction method, it comprises the following steps:
(1)在设定的桥面位置每一侧分别设置两组格构柱，每一组格构柱由4根钢管组成，每一组格构柱1的4根钢管之间焊接固定相连，优选的每一组格构柱1的4根钢管之间通过斜撑和横撑2固定焊接相连形成剪刀撑形式，然后在每一个格构柱顶端安装分配底座3，再在每一个分配底座3上安装四台卷扬机4并在每一个格构柱内侧上下间隔的分别焊接上、下限位横梁10；(1) Set two sets of lattice columns on each side of the set bridge deck position, each set of lattice columns is composed of 4 steel pipes, and the 4 steel pipes of each set of lattice columns 1 are welded and fixedly connected. Preferably, the 4 steel pipes of each group of lattice columns 1 are fixedly welded and connected by diagonal braces and cross braces 2 to form a scissors brace, and then a distribution base 3 is installed on the top of each lattice column, and then each distribution base 3 Four winches 4 are installed on the top and the upper and lower limit beams 10 are respectively welded up and down on the inner side of each lattice column;
(2)在两侧格构柱1的内侧顺桥向分别插打固定支撑桩9至设定标高；(2) Insert and drive fixed support piles 9 to the set elevation respectively along the bridge direction on the inner sides of the lattice columns 1 on both sides;
(3)在同侧两组格构柱1之间插打排架墩管桩24至设定标高，然后将所述的排架墩管桩24之间焊接相连形成至少一个加强排架临时墩22，优选的排架墩管桩24之间采用上下间隔设置的钢管23进行水平向焊接相连，并采用槽钢21在上下钢管23之间将相邻的排架墩管桩24剪刀向焊接相连，使得排架墩管桩24之间形成剪刀撑形式；(3) Insert bent pier pipe piles 24 between the two groups of lattice columns 1 on the same side to the set elevation, and then weld and connect the bent pier pipe piles 24 to form at least one reinforced bent frame temporary pier 22. Preferably, the pipe piles 24 of the bent pier are connected by horizontal welding with steel pipes 23 arranged at intervals up and down, and channel steel 21 is used to connect the adjacent pipe piles 24 of the bent pier between the upper and lower steel pipes 23 by scissors welding. , so that the form of scissors bracing is formed between the pipe piles 24 of the bent piers;
(4)在每侧的多根排架墩管桩桩顶吊放一根工字钢横梁13，工字钢横梁13放置在排架墩管桩桩顶中心位置并调整水平后，将工字钢横梁与排架墩管桩桩顶焊接连接。(4) Place an I-shaped steel crossbeam 13 on the top of a plurality of bent pier pipe piles on each side. The steel beam is welded to the top of the pipe pile of the bent pier.
(5)在每侧的工字钢横梁上安装一个单侧桥梁上部结构，两个相同的单侧桥梁上部结构组成一个可以开启的整体桥梁上部结构，每一个单侧桥梁上部结构均包括多个彼此相连的贝雷片14，所述的多个彼此相连的贝雷片14包括通过贝雷片的加强弦杆15固定在相应侧的工字钢横梁13上的固定段，优选的工字钢横梁13与固定段相交部位采用U型件固定，并将工字钢横梁13与固定段焊接固定；所述的固定段前端通过转铰12与向桥中央延伸的后开启段8后端相连，所述的后开启段8后端和前端分别支撑在工字钢横梁13上以及支撑桩9上，所述的后开启段8前端通过转铰12与向桥中央延伸的前开启段7后端相连，所述的桥两侧的前开启段7的前端在栈桥结构放平时采用销栓进行临时连接；(5) Install a unilateral bridge superstructure on each side of the I-beam beam. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure includes multiple Bailey sheets 14 connected to each other, the plurality of Bailey sheets 14 connected to each other include a fixed section fixed on the I-beam beam 13 on the corresponding side through the reinforcing chord 15 of the Bailey sheet, preferably I-beam The intersecting part of the beam 13 and the fixed section is fixed with a U-shaped piece, and the I-beam beam 13 and the fixed section are welded and fixed; the front end of the fixed section is connected to the rear end of the rear opening section 8 extending to the center of the bridge through a hinge 12, The rear end and front end of the rear opening section 8 are respectively supported on the I-beam beam 13 and the support pile 9, and the front end of the rear opening section 8 is connected to the rear end of the front opening section 7 extending to the center of the bridge through the hinge 12. Connected, the front ends of the front opening section 7 on both sides of the bridge are temporarily connected by pins when the trestle structure is laid;
(6)在每一侧所述的贝雷片的上弦杆上均铺设固定多根间隔设置的横向工字钢，优选的横向工字钢17与贝雷片间用U型件联结以防滑动，并用满焊焊接进行固定；(6) On the upper chord of the Bailey sheet described on each side, a plurality of horizontal I-beams arranged at intervals are laid and fixed, and the preferred horizontal I-beam 17 is connected with the Bailey sheet to prevent sliding , and fixed by full welding;
(7)在横向工字钢上铺设多根间隔设置的纵向工字钢，横向工字钢17和纵向工字钢18相交部位采用满焊焊接固定，然后在所述的纵向工字钢上固定桥面系结构。桥面系结构通常包括安装在所述的纵向工字钢18上的作为桥面的压花钢板19，在所述的压花钢板19上固定有栏杆20，横向工字钢17和纵向工字钢18作为分配梁。压花钢板19的固定可以采用以下方式：在压花钢板19上钻孔，用螺栓与贝雷片14联结，并将压花钢板19与纵向工字钢18焊接固定。(7) Lay a plurality of vertical I-beams arranged at intervals on the horizontal I-beam, and the intersection of the horizontal I-beam 17 and the longitudinal I-beam 18 is fixed by full welding, and then fixed on the longitudinal I-beam Bridge deck structure. The bridge deck structure usually includes an embossed steel plate 19 installed on the longitudinal I-beam 18 as a bridge deck, on which the embossed steel plate 19 is fixed with railings 20, the horizontal I-beam 17 and the longitudinal I-beam Steel 18 as distribution beam. The fixing of embossed steel plate 19 can adopt following mode: drill hole on embossed steel plate 19, connect with Bai Lei sheet 14 with bolt, and embossed steel plate 19 and longitudinal I-beam 18 welding fixation.
(8)与一侧的四台卷扬机中的两台相连的前斜拉索的拉力端固定在同侧的前开启段的前端,并且与该侧的另外两台卷扬机相连的后斜拉索的拉力端固定在该侧的后开启段的前端，始终保持前斜拉索5和后斜拉索6和前、后开启段相连接。(8) The tension ends of the front stay cables connected to two of the four winches on one side are fixed at the front end of the front opening section on the same side, and the tension ends of the rear stay cables connected to the other two winches on this side are The tension end is fixed on the front end of the rear opening section of this side, and the front stay cable 5 and the rear stay cable 6 are connected with the front and rear opening sections all the time.
当有通航净空要求时，同时启动卷扬机4，将斜拉式可弯折开启栈桥开启。开启至一定角度后，前开启段7将接触到上限位横梁，此时，停止前斜拉索5的牵拉。继续牵拉后斜拉索6，直到后开启段8接触到下限位横梁，此时，停止后斜拉索6的牵拉。由于前开启段7和后开启段8都最大限度靠近格构柱1，此时可为桥跨部分一定宽度内提供无限的通航净空和通航宽度，允许船只11通过。When there is a navigation clearance requirement, start the winch 4 simultaneously, and the cable-stayed bendable opening trestle is opened. After opening to a certain angle, the front opening section 7 will touch the upper limit beam, and at this moment, stop the pulling of the front stay cable 5. Continue to pull the rear stay cable 6 until the rear opening section 8 touches the lower limit beam, at this time, stop the pulling of the rear stay cable 6. Since the front opening section 7 and the rear opening section 8 are as close as possible to the lattice column 1, unlimited navigation clearance and navigation width can be provided within a certain width of the bridge span at this time, allowing ships 11 to pass through.
当通航净空要求取消时，先释放前斜拉索5，使前开启段7降落至与后开启段8相平的时候再同时释放后斜拉索6，直至斜拉式可弯折开启栈桥平面重新落在支撑桩9上。When the navigation clearance requirement is canceled, release the front stay cable 5 first, and then release the rear stay cable 6 at the same time when the front opening section 7 is lowered to be level with the rear opening section 8, until the cable-stayed bendable open trestle plane Fall on support pile 9 again.
实施例1Example 1
(1)在设定的桥面位置每一侧分别设置两组格构柱，每一组格构柱由4根钢管组成，每一组格构柱1的4根钢管之间焊接固定相连，优选的每一组格构柱1的4根钢管之间通过斜撑和横撑2固定焊接相连形成剪刀撑形式，然后在每一个格构柱顶端安装分配底座3，再在每一个分配底座3上安装四台卷扬机4并在每一个格构柱内侧上下间隔的分别焊接上、下限位横梁10；(1) Set two sets of lattice columns on each side of the set bridge deck position, each set of lattice columns is composed of 4 steel pipes, and the 4 steel pipes of each set of lattice columns 1 are welded and fixedly connected. Preferably, the 4 steel pipes of each group of lattice columns 1 are fixedly welded and connected by diagonal braces and cross braces 2 to form a scissors brace, and then a distribution base 3 is installed on the top of each lattice column, and then each distribution base 3 Four winches 4 are installed on the top and the upper and lower limit beams 10 are respectively welded up and down on the inner side of each lattice column;
(2)在两侧格构柱1的内侧顺桥向分别插打固定支撑桩9至设定标高；(2) Insert and drive fixed support piles 9 to the set elevation respectively along the bridge direction on the inner sides of the lattice columns 1 on both sides;
(3)在同侧两组格构柱1之间插打排架墩管桩24至设定标高，然后将所述的排架墩管桩24之间焊接相连形成至少一个加强排架临时墩22，排架墩管桩24之间采用上下间隔设置的钢管23进行水平向焊接相连，并采用槽钢21在上下钢管23之间将相邻的排架墩管桩24剪刀向焊接相连，使得排架墩管桩24之间形成剪刀撑形式；(3) Insert bent pier pipe piles 24 between the two groups of lattice columns 1 on the same side to the set elevation, and then weld and connect the bent pier pipe piles 24 to form at least one reinforced bent frame temporary pier 22. The pipe piles 24 of the bent piers are connected by horizontal welding with the steel pipes 23 arranged at intervals up and down, and the adjacent pipe piles 24 of the bent piers are connected by scissors welding between the upper and lower steel pipes 23, so that A form of scissors bracing is formed between the pipe piles 24 of the bent pier;
(4)在每侧的多根排架墩管桩桩顶吊放一根工字钢横梁13，工字钢横梁13放置在排架墩管桩桩顶中心位置并调整水平后，将工字钢横梁与排架墩管桩桩顶焊接连接。(4) Place an I-shaped steel crossbeam 13 on the top of a plurality of bent pier pipe piles on each side. The steel beam is welded to the top of the pipe pile of the bent pier.
(5)在每侧的工字钢横梁上安装一个单侧桥梁上部结构，两个相同的单侧桥梁上部结构组成一个可以开启的整体桥梁上部结构，每一个单侧桥梁上部结构均包括多个彼此相连的贝雷片14，所述的多个彼此相连的贝雷片14包括通过贝雷片的加强弦杆15固定在相应侧的工字钢横梁13上的固定段，优选的工字钢横梁13与固定段相交部位采用U型件固定，并将工字钢横梁13与固定段焊接固定；所述的固定段前端通过转铰12与向桥中央延伸的后开启段8后端相连，所述的后开启段8后端和前端分别支撑在工字钢横梁13上以及支撑桩9上，所述的后开启段8前端通过转铰12与向桥中央延伸的前开启段7后端相连，所述的桥两侧的前开启段7的前端在栈桥结构放平时采用销栓进行临时连接；(5) Install a unilateral bridge superstructure on each side of the I-beam beam. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure includes multiple Bailey sheets 14 connected to each other, the plurality of Bailey sheets 14 connected to each other include a fixed section fixed on the I-beam beam 13 on the corresponding side through the reinforcing chord 15 of the Bailey sheet, preferably I-beam The intersecting part of the beam 13 and the fixed section is fixed with a U-shaped piece, and the I-beam beam 13 and the fixed section are welded and fixed; the front end of the fixed section is connected to the rear end of the rear opening section 8 extending to the center of the bridge through a hinge 12, The rear end and front end of the rear opening section 8 are respectively supported on the I-beam beam 13 and the support pile 9, and the front end of the rear opening section 8 is connected to the rear end of the front opening section 7 extending to the center of the bridge through the hinge 12. Connected, the front ends of the front opening section 7 on both sides of the bridge are temporarily connected by pins when the trestle structure is laid;
(6)在每一侧所述的贝雷片的上弦杆上均铺设固定多根间隔设置的横向工字钢，优选的横向工字钢17与贝雷片间用U型件联结以防滑动，并用满焊焊接进行固定；(6) On the upper chord of the Bailey sheet described on each side, a plurality of horizontal I-beams arranged at intervals are laid and fixed, and the preferred horizontal I-beam 17 is connected with the Bailey sheet to prevent sliding , and fixed by full welding;
(7)在横向工字钢上铺设多根间隔设置的纵向工字钢，横向工字钢17和纵向工字钢18相交部位采用满焊焊接固定，然后在所述的纵向工字钢上固定桥面系结构。桥面系结构包括安装在所述的纵向工字钢18上的作为桥面的压花钢板19，在所述的压花钢板19上固定有栏杆20，横向工字钢17和纵向工字钢18作为分配梁。压花钢板19的固定采用以下方式：在压花钢板19上钻孔，用螺栓与贝雷片14联结，并将压花钢板19与纵向工字钢18焊接固定。(7) Lay a plurality of vertical I-beams arranged at intervals on the horizontal I-beam, and the intersection of the horizontal I-beam 17 and the longitudinal I-beam 18 is fixed by full welding, and then fixed on the longitudinal I-beam Bridge deck structure. The bridge deck structure includes an embossed steel plate 19 installed on the longitudinal I-beam 18 as a bridge deck, on which the embossed steel plate 19 is fixed with railings 20, the horizontal I-beam 17 and the longitudinal I-beam 18 as a distribution beam. The fixing of embossed steel plate 19 adopts the following mode: drill holes on embossed steel plate 19, connect with Bailey sheet 14 with bolts, and embossed steel plate 19 and vertical I-beam 18 are welded and fixed.
(8)与一侧的四台卷扬机中的两台相连的前斜拉索的拉力端固定在同侧的前开启段的前端,并且与该侧的另外两台卷扬机相连的后斜拉索的拉力端固定在该侧的后开启段的前端，始终保持前斜拉索5和后斜拉索6和前、后开启段相连接。(8) The tension ends of the front stay cables connected to two of the four winches on one side are fixed at the front end of the front opening section on the same side, and the tension ends of the rear stay cables connected to the other two winches on this side are The tension end is fixed on the front end of the rear opening section of this side, and the front stay cable 5 and the rear stay cable 6 are connected with the front and rear opening sections all the time.
经检验采用本方法：通过斜拉体系弯折结构的设计消除了航道的通航净空限制，在船体宽度允许条件下可保证大型船舶通过，采用斜拉弯折栈桥体系能够增大通行水道宽度，结构安全稳定。This method is adopted after inspection: the design of the cable-stayed bending structure eliminates the limitation of the navigation clearance of the channel, and can ensure the passage of large ships under the condition of the hull width. safe and stable.
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| CN106368113B (en) * | 2016-11-14 | 2018-08-07 | 长安大学 | A kind of vertical-lift open-type arch bridge and its unlatching and method of closing |
| CN106968256B (en) * | 2017-03-22 | 2019-02-22 | 深圳市福田建安建设集团有限公司 | Construction method of foundation pit prefabricated steel trestle bridge |
| CN106930179A (en) * | 2017-04-28 | 2017-07-07 | 茌平信发华宇氧化铝有限公司 | A kind of top car device of high-efficiency environment friendly purifying vehicle |
| CN109235234B (en) * | 2018-11-19 | 2023-10-10 | 江苏苏建路桥机械有限公司 | A kind of balance beam that effectively adjusts the Bailey plate steel bridge |
| CN110820528A (en) * | 2019-12-12 | 2020-02-21 | 广州揽睿路桥设计有限公司 | Tie rod arch bridge with liftable bridge floor |
| CN111676799B (en) * | 2020-06-19 | 2022-01-28 | 杭州江润科技有限公司 | Height-adjustable simple cable-stayed diversion trench temporary bridge and construction method thereof |
| CN111979932A (en) * | 2020-09-03 | 2020-11-24 | 上海市城市建设设计研究总院（集团）有限公司 | Steel structure construction of temporary span joints for quick connection of bridge decks |
| CN113215989B (en) * | 2021-04-14 | 2022-11-01 | 上海通涵建筑工程有限公司 | Steel trestle and construction method thereof |
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| US6832459B2 (en) * | 2002-01-18 | 2004-12-21 | Matthew Russell | Methods and apparatus for forming and placing generally horizontal structures |
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