CN104631333A - Moving hanger frame and method for small cross beam, small longitudinal beam and bridge deck slab cast-in-situ construction of arch bridge - Google Patents
Moving hanger frame and method for small cross beam, small longitudinal beam and bridge deck slab cast-in-situ construction of arch bridge Download PDFInfo
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- 238000009415 formwork Methods 0.000 claims abstract description 33
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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Abstract
本发明公开了一种拱桥小横梁、小纵梁及桥面板现浇施工移动吊架及方法，包括装在两侧已浇的边主梁上的滑道和横跨两侧已浇的边主梁且两端装在滑道上的简支吊架，简支吊架的顶部分布若干上分配梁，各上分配梁上均连接吊杆，各吊杆底部在简支吊架的下方均连接下分配梁，下分配梁顶部铺设横梁，横梁上设置浇筑小横梁、小纵梁及桥面板的模板系统。本结构消耗辅助材料较少；施工时，简支吊架可沿滑道向前滑动，完成一跨后可移动至下一跨，使用方便；无落地支架，所有施工过程均在可移动的施工平台上完成，安全风险较低，且安装完成后不需大型吊装设备配合施工，还不受地理环境限制。
The invention discloses a mobile hanger and a method for cast-in-situ construction of small beams, small longitudinal girders and bridge decks of arch bridges, including slideways installed on side main beams that have been poured on both sides and side main beams that have been cast across both sides. The beam is a simply supported hanger with both ends installed on the slideway. Several upper distribution beams are distributed on the top of the simply supported hanger. Each upper distribution beam is connected to a boom, and the bottom of each boom is connected to the lower distribution beam under the simply supported hanger. , the top of the lower distribution beam is laid with beams, and the formwork system for pouring small beams, small longitudinal beams and bridge decks is set on the beams. This structure consumes less auxiliary materials; during construction, the simply supported hanger can slide forward along the slideway, and can be moved to the next span after completing one span, which is convenient to use; there is no floor support, and all construction processes are carried out in a movable construction Completed on the platform, the safety risk is low, and after the installation is completed, no large-scale hoisting equipment is required to cooperate with the construction, and it is not restricted by the geographical environment.
Description
技术领域 technical field
本发明用于桥梁施工技术领域，特别是涉及一种拱桥小横梁、小纵梁及桥面板现浇施工移动吊架及方法。 The invention is used in the technical field of bridge construction, and in particular relates to a mobile hanger and method for cast-in-place construction of small beams, small longitudinal beams and bridge decks of arch bridges.
背景技术 Background technique
随着我国经济实力的发展、生活水平的提高，拱桥作为一种美观的桥型越来越多地应用于市政道路中。对于中承式钢箱系杆拱桥，主墩上方往往有一“Y型”三角刚架结构与上部钢箱拱连成一整体。这种结构施工顺序一般是：首先施工主墩承台上2个“Y型”三角刚架混凝土，然后施工上方的2条边主梁，使“Y型”结构成为三角形结构，再施工两个三角形结构之间的大型横梁（分前、中、后），最后施工2条边主梁与3条大型横梁包围轮廓中间的小横梁、小纵梁及桥面板，形成完整的桥跨承重结构。位于边主梁及三条大型的前、中、后横梁间的现浇钢筋混凝土结构称为小横梁、小纵梁及桥面板。对于中承式钢箱系杆拱桥三角刚架结构中小横梁、小纵梁及桥面板现浇施工，可根据结构特点及现场实际情况，选用经济合理的施工方法。 With the development of my country's economic strength and the improvement of living standards, arch bridges, as a beautiful bridge type, are more and more used in municipal roads. For the steel box tie-bar arch bridge, there is often a "Y-shaped" triangular rigid frame structure above the main pier and the upper steel box arch to form a whole. The construction sequence of this structure is generally as follows: first construct the two "Y-shaped" triangular rigid frame concrete on the main pier cap, and then construct the two side main beams above to make the "Y-shaped" structure a triangular structure, and then construct two The large beams between the triangular structures (divided into front, middle and rear), and finally 2 side main beams and 3 large beams surround the small beams, small longitudinal beams and bridge decks in the middle of the outline to form a complete bridge span load-bearing structure. The cast-in-place reinforced concrete structures located between the side girders and the three large front, middle and rear beams are called small beams, small longitudinal beams and bridge decks. For the cast-in-situ construction of the small beams, small longitudinal beams and bridge decks of the triangular rigid frame structure of the steel box tied arch bridge, an economical and reasonable construction method can be selected according to the structural characteristics and the actual situation on site.
通常情况下，小横梁、小纵梁及桥面板现浇施工常规方法为：梁-柱支架法现浇、满堂支架法现浇。 Usually, the conventional methods of cast-in-place construction for small beams, small longitudinal girders and bridge decks are: cast-in-place beam-column support method, cast-in-situ cast-in-place method for full hall support.
1.梁-柱支架法：在现浇混凝土结构下方插打钢管桩或预制管桩基础，施工小承台，安装钢管立柱及联接系，桩帽及柱顶分配梁，布置贝雷梁及支撑架作为跨越梁式支撑结构形成浇筑支架，贝雷梁顶面布置小分配梁及钢管脚手架，其顶面根据需要调整成各种浇筑结构形状，最后立模，绑扎钢筋浇筑混凝土，即为梁-柱支架法现浇。 1. Beam-column support method: Insert steel pipe piles or prefabricated pipe pile foundations under the cast-in-place concrete structure, construct small caps, install steel pipe columns and connection systems, pile caps and column top distribution beams, arrange Bailey beams and The support frame is used as a spanning beam support structure to form a pouring support. Small distribution beams and steel pipe scaffolding are arranged on the top of the Bailey beam. The top surface is adjusted to various pouring structure shapes according to needs. Finally, the mold is erected, and the reinforced concrete is poured, which is the beam. - Cast-in-place column support method.
2.满堂支架法：将现浇混凝土结构下方的地基进行换填、硬化处理，搭设碗扣式或扣件式钢管脚手架，其顶面根据需要调整成各种浇筑结构形状，安装顶托和托内分配梁，然后立模，绑扎钢筋浇筑混凝土，即为满堂支架法现浇。 2. Full hall support method: replace and harden the foundation under the cast-in-place concrete structure, set up a bowl-shaped or fastener-type steel pipe scaffold, adjust the top surface to various pouring structure shapes according to needs, and install jacking and supporting Inner distribution beams, then formwork, binding steel bars and pouring concrete, that is, cast-in-situ by the full support method.
现有技术的缺点： Disadvantages of existing technology:
1.对于梁-柱支架法现浇，可在陆地或水上使用，需要在每一跨混凝土结构下方插打钢管桩或预制管桩基础，制作小承台，需要消耗一定数量的钢管桩或预制管桩、钢筋及混凝土，该部分材料回收困难或利用价值低，特别是水上基础回收难度很大。需要较多的大型机械设备：陆上打桩需要打桩机，水上打桩需要打桩船，梁-柱支架法中的钢管立柱及支架等制安需要吊机，水上需要吊船。钢管支架较笨重，拆装倒用不易。 1. For the cast-in-place beam-column support method, which can be used on land or on water, it is necessary to insert steel pipe piles or prefabricated pipe pile foundations under each span of concrete structure to make small caps, which requires a certain amount of steel pipe piles Or prefabricated pipe piles, steel bars and concrete, which are difficult to recycle or have low utilization value, especially the recovery of water foundations is very difficult. More large-scale machinery and equipment are required: piling machines are required for piling on land, piling boats are required for piling on water, cranes are required for steel pipe columns and brackets in the beam-column support method, and gondolas are required for water. The steel pipe bracket is heavy and difficult to disassemble and use.
2.对于满堂支架法现浇，只可在陆地使用，拆卸倒用比钢管支架法方便，大型设备使用较少，但要求地基承载力较高。往往需要对地基进行换填、浇筑场地硬化混凝土，如果在软弱基础处或是水上使用满堂支架法，地基处理成本很高。 2. For the cast-in-situ cast-in-place method of the full house support method, it can only be used on land. It is more convenient to dismantle and use than the steel pipe support method. Large-scale equipment is less used, but it requires a higher bearing capacity of the foundation. It is often necessary to replace the foundation and pour hardened concrete on the ground. If the full house support method is used on the weak foundation or on the water, the cost of foundation treatment will be very high.
3.梁-柱支架法及满堂支架法均需要反复倒用，钢管及支架等装拆需要使用吊机、吊船等起重设备，而满堂支架装拆需要较多的人工拆卸，也需要吊机配合使用，两种方法施工便利性有限。 3. Both the beam-column support method and the full hall support method need to be used repeatedly. The assembly and disassembly of steel pipes and supports requires the use of lifting equipment such as cranes and gondolas, while the assembly and disassembly of full hall supports requires more manual disassembly and cranes. Machines are used together, and the construction convenience of the two methods is limited.
4.梁-柱支架和满堂支架均需要逐孔安装，逐孔进行荷载预压，工作量大，人工费大，不安全、不经济。 4. Both the beam-column support and the full hall support need to be installed hole by hole, and the load preload is carried out hole by hole. The workload is large, the labor cost is large, and it is unsafe and uneconomical.
5.梁-柱支架和满堂支架的装拆均属高空作业，安全风险大，因支架需要反复安拆，安全风险长，一直从支架安装施工开始到支架拆除施工结束。 5. The assembly and disassembly of the beam-column support and the full hall support are high-altitude operations, and the safety risk is high. Because the support needs to be installed and disassembled repeatedly, the safety risk is long, from the beginning of the support installation to the end of the support removal.
发明内容 Contents of the invention
为解决上述问题，本发明提供一种拱桥小横梁、小纵梁及桥面板现浇施工移动吊架及方法，省去梁-柱支架或满堂支架的逐孔装拆和预压，减少辅助钢材使用量和提高钢材利用率，降低施工措施费用，做到一次性投入，多次收益，方便施工，降低施工安全风险。 In order to solve the above problems, the present invention provides a mobile hanger and method for cast-in-place construction of small beams, small longitudinal beams and bridge decks of arch bridges, which saves the hole-by-hole assembly and disassembly and preloading of beam-column brackets or full hall brackets, and reduces auxiliary steel materials. Increase the utilization rate of steel, reduce the cost of construction measures, achieve one-time investment, multiple benefits, facilitate construction, and reduce construction safety risks.
本发明解决其技术问题所采用的技术方案是：一种拱桥小横梁、小纵梁及桥面板现浇施工移动吊架，包括装在两侧已浇的边主梁上的滑道和横跨两侧已浇的边主梁且两端装在所述滑道顶面上的简支吊架，所述简支吊架的顶部分布若干上分配梁，各所述上分配梁上均连接吊杆，各所述吊杆底部在简支吊架的下方均连接下分配梁，所述下分配梁顶部铺设横梁，所述横梁上设置浇筑小横梁、小纵梁及桥面板的模板系统。 The technical scheme adopted by the present invention to solve the technical problem is: a mobile hanger for small beams, small longitudinal beams and bridge deck construction of an arch bridge, including slideways and spanning rails installed on the side girders that have been poured on both sides. The side main girders on both sides have been poured and simply supported hangers installed on the top surface of the slideway at both ends. Several upper distribution beams are distributed on the top of the simply supported hanger, and each upper distribution beam is connected with a suspender. The bottom of each boom is connected to the lower distribution beam under the simply supported hanger, and the top of the lower distribution beam is laid with a crossbeam, and the formwork system for pouring small beams, small longitudinal beams and bridge decks is set on the crossbeams.
进一步作为本发明技术方案的改进，所述简支吊架由若干贝雷片拼装而成，所述简支吊架的两端与所述滑道之间设有可滑动配合连接的支座。 As a further improvement of the technical solution of the present invention, the simply supported hanger is assembled from several Bailey pieces, and a support that can be slidably fitted and connected is provided between the two ends of the simply supported hanger and the slideway.
进一步作为本发明技术方案的改进，所述吊杆包括分别装在所述模板系统前后 两侧的前吊杆和后吊杆，所述前吊杆和后吊杆上在所述上分配梁的上方设有升降块，所述升降块与上分配梁间装有升降千斤顶。 As a further improvement of the technical solution of the present invention, the boom includes a front boom and a rear boom respectively mounted on the front and rear sides of the formwork system, and the front boom and the rear boom are mounted on the top of the distribution beam. A lifting block is arranged above, and a lifting jack is installed between the lifting block and the upper distribution beam.
进一步作为本发明技术方案的改进，还包括装在后侧已浇筑的节段混凝土上的行走吊带，所述行走吊带的下端连接吊挂滚轮，所述下分配梁的后端设置套入所述吊挂滚轮中的接长段。 As a further improvement of the technical solution of the present invention, it also includes a walking sling installed on the poured segmental concrete on the rear side, the lower end of the walking sling is connected to the hanging roller, and the rear end of the lower distribution beam is set to be inserted into the Extensions in hanging rollers.
进一步作为本发明技术方案的改进，所述简支吊架顶部和底部分别与上分配梁和下分配梁螺栓连接。 As a further improvement of the technical solution of the present invention, the top and bottom of the simply supported hanger are respectively connected to the upper distribution beam and the lower distribution beam by bolts.
一种拱桥小横梁、小纵梁及桥面板现浇施工方法，包括以下步骤： A kind of arch bridge small crossbeam, small longitudinal girder and bridge deck cast-in-place construction method, comprises the following steps:
S10.预制上分配梁、下分配梁、横梁和模板系统，在两侧已浇的边主梁上安装滑道，在所述滑道顶面上拼装横跨两侧已浇的边主梁的简支吊架，沿所述简支吊架的顶部设置若干上分配梁，各所述上分配梁上均连接吊杆，各所述吊杆底部在简支吊架的下方均连接下分配梁，所述下分配梁顶部铺设横梁，所述横梁上设置浇筑小横梁、小纵梁及桥面板的模板系统； S10. Prefabricate the upper distribution beam, lower distribution beam, cross beam and formwork system, install slideways on the side main beams that have been poured on both sides, and assemble on the top surface of the slideway across the side main beams that have been poured on both sides Simply supported hanger, a number of upper distribution beams are arranged along the top of the simply supported hanger, each of the upper distribution beams is connected with a suspender, and the bottom of each of the suspenders is connected with the lower distribution beam under the simply supported hanger, so The crossbeam is laid on the top of the lower distribution beam, and the formwork system for pouring small crossbeams, small longitudinal beams and bridge decks is arranged on the crossbeams;
S20.通过各所述吊杆提升下分配梁，所述模板系统随下分配梁一起上升至浇筑位； S20. Lifting the lower distribution beam through each of the suspenders, and the formwork system rises to the pouring position together with the lower distribution beam;
S30.绑扎钢筋，安装预应力管道和穿入钢绞线，调整模板系统标高，浇筑混凝土，待混凝土强度及龄期达到设计要求后，张拉本浇筑节段内的预应力钢绞线和真空压浆； S30. Bind steel bars, install prestressed pipes and penetrate steel strands, adjust the elevation of the formwork system, pour concrete, and stretch the prestressed steel strands and vacuum in the pouring section after the strength and age of the concrete meet the design requirements grouting;
S40.通过各所述吊杆下放下分配梁，所述模板系统随下分配梁一起下降至完全离开已浇筑完成的小横梁、小纵梁及桥面板混凝土； S40. Lowering the distribution beam through each of the suspenders, the formwork system descends together with the lower distribution beam to completely leave the poured small beams, small longitudinal beams and bridge deck concrete;
S50.在后侧已浇筑的节段混凝土上安装行走吊带，所述行走吊带的下端连接吊挂滚轮，所述下分配梁的后端接长套入吊挂滚轮中，使之能自由滚动移动，牵引简支吊架沿所述滑道顶面向前移动至下一浇筑节段； S50. Install a walking sling on the poured segmental concrete on the rear side, the lower end of the walking sling is connected to the hanging roller, and the rear end of the lower distribution beam is inserted into the hanging roller so that it can roll and move freely , pulling the simply supported hanger to move forward along the top surface of the slideway to the next pouring section;
S60.重复步骤S20～S50，完成全部节段的浇筑施工。 S60. Steps S20-S50 are repeated to complete the pouring construction of all segments.
进一步作为本发明技术方案的改进，步骤S10与S20间还包括步骤S11，步骤S11包括在所述横梁上设置载荷以进行荷载预压检验简支吊架、上分配梁、吊杆、下分配梁以及横梁组成的吊架系统的强度、刚度和稳定性。 As a further improvement of the technical solution of the present invention, step S11 is also included between steps S10 and S20, and step S11 includes setting a load on the crossbeam for load preload inspection simply supported hanger, upper distribution beam, boom, and lower distribution beam And the strength, rigidity and stability of the hanger system composed of beams.
进一步作为本发明技术方案的改进，所述横梁上设置载荷采用砂袋围堤及在砂袋围堤之中的低槽内铺设防水油布后向油布内注水的方式进行。 As a further improvement of the technical solution of the present invention, the load on the beam is set by means of sand bag embankment and laying tarpaulin in the low groove in the sand bag embankment, and then pouring water into the tarpaulin.
进一步作为本发明技术方案的改进，所述吊杆包括分别装在所述模板系统前后两侧的前吊杆和后吊杆，所述前吊杆和后吊杆上在所述上分配梁的上方设有升降块，所述升降块与上分配梁间装有升降千斤顶，通过升降千斤顶顶推升降块实现吊杆的提升和下放。 As a further improvement of the technical solution of the present invention, the boom includes a front boom and a rear boom installed on the front and rear sides of the formwork system respectively, and the front boom and the rear boom are mounted on the upper distribution beam. A lifting block is arranged on the top, and a lifting jack is installed between the lifting block and the upper distribution beam, and the lifting block is pushed by the lifting jack to realize the lifting and lowering of the boom.
进一步作为本发明技术方案的改进，所述简支吊架采用塔吊拼装贝雷片而成，所述简支吊架的两端与所述滑道之间设有可滑动配合连接的支座，步骤S50中，在简支吊架下方的支座前端安装牵引卷扬机、滑车组及钢丝绳，加强固定滑道，在滑道顶面上涂抹锂基脂，用卷扬机牵引支座，完成简支吊架向前移动。 As a further improvement of the technical solution of the present invention, the simply supported hanger is formed by assembling Bailey sheets from a tower crane, and a support that can be slidably fitted and connected is provided between the two ends of the simply supported hanger and the slideway, In step S50, a traction winch, block block and steel wire rope are installed at the front end of the support below the simply supported hanger, the slideway is reinforced and fixed, lithium-based grease is applied on the top surface of the slideway, and the support is pulled by the winch to complete the simply supported hanger Move forward.
本发明的有益效果：本拱桥小横梁、小纵梁及桥面板现浇施工移动吊架利用两侧边已浇的边主梁为支点，在侧边已浇的边主梁间设置简支吊架，在已浇的边主梁顶面上设置滑道，滑道既能够承受施工荷载，又能作为滑移用的滑移基座。在简支吊架上方设置若干上分配梁，各上分配梁设置承重吊杆。吊杆下端连接下分配梁，下分配梁上铺设横梁，上分配梁与下分配梁一一对应，穿入吊杆锚固，横梁上安装有模板系统。施工时，通过吊杆起升模板系统到位，浇筑小横梁、小纵梁及桥面板，待混凝土强度及龄期达到设计要求后，张拉本浇筑节段内预应力钢绞线和真空压浆，通过各吊杆下放模板系统，然后通过牵引系统牵引使之移动至下一浇筑节段。不断往复循环，直到完成全部小横梁、小纵梁及桥面板的施工。 Beneficial effects of the present invention: the mobile hanger for the cast-in-place construction of small beams, small longitudinal girders and bridge decks of the arch bridge uses the cast-in-place main girders on both sides as fulcrums, and simply supported cranes are arranged between the cast-in-place side girders Set the slideway on the top surface of the poured side girder, which can not only bear the construction load, but also serve as a sliding base for sliding. A number of upper distribution beams are arranged above the simply supported hanger, and each upper distribution beam is provided with a load-bearing suspender. The lower end of the boom is connected to the lower distribution beam, and the beam is laid on the lower distribution beam, and the upper distribution beam corresponds to the lower distribution beam one by one, and the boom is penetrated for anchoring, and the formwork system is installed on the beam. During construction, lift the formwork system into place by the boom, pour small beams, small longitudinal beams and bridge decks, and after the strength and age of the concrete meet the design requirements, tension the prestressed steel strands and vacuum grouting in the pouring section , lower the formwork system through each boom, and then move it to the next pouring section by traction system traction. Continuous reciprocating cycle until the construction of all small beams, small longitudinal beams and bridge decks is completed.
该吊架系统一次拼装，长期使用，直到最后一跨完成都不需装拆，也不需要再次预压，施工期间不需要大型机械吊装，省材料省人工，可加快工期。本结构消耗辅助材料较少；施工完成一跨后可移动至下一跨，使用方便；无落地支架，所有施工过程均在可移动的施工平台上完成，减少高空作业时间，安全风险较低，且安装完成后不需大型吊装设备配合施工，无落地式支撑系统，不受软弱基础、河流等不利地形影响，可在复杂环境下的实施，不受地理环境限制。 The hanger system is assembled once and used for a long time. It does not need to be assembled and disassembled until the last span is completed, and it does not need to be preloaded again. During the construction period, no large-scale mechanical hoisting is required, which saves materials and labor, and can speed up the construction period. This structure consumes less auxiliary materials; after the construction is completed, one span can be moved to the next span, which is convenient to use; there is no floor support, and all construction processes are completed on a movable construction platform, which reduces the time for high-altitude operations and lowers safety risks. And after the installation is completed, there is no need for large-scale hoisting equipment to cooperate with the construction, there is no floor support system, and it is not affected by unfavorable terrain such as weak foundations and rivers. It can be implemented in complex environments and is not restricted by geographical environments.
附图说明 Description of drawings
下面结合附图对本发明作进一步说明： The present invention will be further described below in conjunction with accompanying drawing:
图1是本结构示意图拱桥横截面结构示意图； Fig. 1 is the cross-sectional structure schematic diagram of arch bridge of this structural schematic diagram;
图2是本发明实施例拱桥小横梁、小纵梁及桥面板现浇施工移动吊架结构主视图； Fig. 2 is the front view of the mobile hanger structure of the small beam, small longitudinal beam and bridge deck construction of the arch bridge according to the embodiment of the present invention;
图3是本发明实施例拱桥小横梁、小纵梁及桥面板现浇施工移动吊架结构侧视图； Fig. 3 is a side view of the mobile hanger structure of the small beam, the small longitudinal beam and the bridge deck cast-in-place construction of the arch bridge according to the embodiment of the present invention;
图4是本发明实施例拱桥小横梁、小纵梁及桥面板现浇施工移动吊架向前移动结构侧视图。 Fig. 4 is a side view of the forward moving structure of the small beam, small longitudinal beam and bridge deck construction mobile hanger of the arch bridge according to the embodiment of the present invention.
具体实施方式 Detailed ways
参照图1～图4，本发明提供了一种拱桥小横梁、小纵梁及桥面板现浇施工移动吊架，包括装在两侧已浇的边主梁1上的滑道2和横跨两侧已浇的边主梁1且两端装在所述滑道2顶面上的简支吊架3，所述简支吊架3由若干贝雷片拼装而成，所述简支吊架3的两端与所述滑道2之间设有可滑动配合连接的支座31。所述简支吊架3的顶部分布若干上分配梁4，各所述上分配梁4上均连接吊杆5，各所述吊杆5底部在简支吊架3的下方均连接下分配梁6，所述下分配梁6顶部铺设横梁61，所述横梁61上设置浇筑小横梁、小纵梁及桥面板的模板系统62。所述简支吊架3顶部和底部分别与上分配梁4和下分配梁6螺栓连接。 Referring to Fig. 1-Fig. 4, the present invention provides a kind of arch bridge small crossbeam, small longitudinal girder and bridge deck cast-in-place construction mobile hanger, including slideway 2 and span The side girder 1 that has been poured on both sides and the simply supported hanger 3 installed on the top surface of the slideway 2 at both ends, the simply supported hanger 3 is assembled from several Bailey pieces, the simply supported hanger Between the two ends of the frame 3 and the slideway 2 there is a support 31 which can be slidably connected. A number of upper distribution beams 4 are distributed on the top of the simply supported hanger 3, each of the upper distribution beams 4 is connected to a suspender 5, and the bottom of each of the suspenders 5 is connected to the lower distribution beam under the simply supported hanger 3 6. A crossbeam 61 is laid on the top of the lower distribution beam 6, and the formwork system 62 for pouring small crossbeams, small longitudinal beams and bridge decks is arranged on the crossbeams 61. The top and bottom of the simply supported hanger 3 are bolted to the upper distribution beam 4 and the lower distribution beam 6 respectively.
所述吊杆5为精轧螺纹钢筋，所述吊杆5包括分别装在所述模板系统前后两侧的前吊杆51和后吊杆52，所述前吊杆51和后吊杆52上在所述上分配梁4的上方设有升降块53，所述升降块53与上分配梁4间装有升降千斤顶54。 The suspender 5 is a finish-rolled threaded steel bar, and the suspender 5 includes a front suspender 51 and a rear suspender 52 respectively mounted on the front and rear sides of the formwork system, and the front suspender 51 and the rear suspender 52 are A lifting block 53 is arranged above the upper distribution beam 4 , and a lifting jack 54 is installed between the lifting block 53 and the upper distribution beam 4 .
还包括装在后侧已浇筑的节段混凝土上的行走吊带7，所述行走吊带7的下端连接吊挂滚轮71，所述下分配梁6的后端设置套入所述吊挂滚轮71中的接长段63。 It also includes a walking sling 7 mounted on the poured segmental concrete on the rear side, the lower end of the walking sling 7 is connected to a hanging roller 71, and the rear end of the lower distribution beam 6 is set to be inserted into the hanging roller 71 The extended section 63.
一种拱桥小横梁、小纵梁及桥面板现浇施工方法，包括以下步骤： A kind of arch bridge small crossbeam, small longitudinal girder and bridge deck cast-in-place construction method, comprises the following steps:
S10.预制上分配梁4、下分配梁6、横梁61和模板系统62，在两侧已浇的边主梁1上安装滑道2，在所述滑道2顶面上拼装横跨两侧已浇的边主梁1的简支吊架3，所述简支吊架3采用塔吊拼装贝雷片而成，所述简支吊架3的两端设有与所述滑道2之间可滑动配合连接的支座31，沿所述简支吊架3的顶部设置7条上分配梁4，各所述上分配梁4上均连接吊杆5，各所述吊杆5底部在简支吊架3的下方均连接下分配梁6，所述下分配梁6顶部铺设横梁61，所述横梁61上设置浇筑小横梁、小纵梁及桥面板的模板系统62，所述吊杆5包括分别装在所述模板系统62前后两侧的前吊杆51和后吊杆52，所述前吊杆51和后吊杆52上在所述上分配梁4的上方设有升降块53，所述升降块53与上分配梁4间装有28t螺旋升降千斤顶54； S10. Prefabricate the upper distribution beam 4, the lower distribution beam 6, the beam 61 and the formwork system 62, install the slideway 2 on the side main beam 1 that has been poured on both sides, and assemble on the top surface of the slideway 2 to span both sides The simply supported hanger 3 of the side girder 1 that has been poured. The simply supported hanger 3 is formed by assembling Bailey sheets from a tower crane. The two ends of the simply supported hanger 3 are provided with The support 31 that can be slidably connected is provided with 7 upper distribution beams 4 along the top of the simply supported hanger 3, and each of the upper distribution beams 4 is connected with a suspender 5, and the bottom of each of the suspenders 5 is in a simple The bottom of the support and hanger 3 is connected with the lower distribution beam 6, and the top of the lower distribution beam 6 is laid with a crossbeam 61, and the formwork system 62 for pouring small beams, small longitudinal beams and bridge decks is arranged on the crossbeam 61, and the boom 5 It includes a front boom 51 and a rear boom 52 respectively installed on the front and rear sides of the formwork system 62, and the front boom 51 and the rear boom 52 are provided with lifting blocks 53 above the upper distribution beam 4, A 28t spiral lifting jack 54 is installed between the lifting block 53 and the upper distribution beam 4;
S11.在所述横梁61上设置载荷以进行荷载预压检验简支吊架3、上分配梁4、吊杆5、下分配梁6以及横梁61组成的吊架系统的强度、刚度和稳定性，所述横梁61上设置载荷采用砂袋围堤及在砂袋围堤之中的低槽内铺设防水油布后向油布内注水的方式进行； S11. Set the load on the crossbeam 61 to carry out the load preloading test to check the strength, rigidity and stability of the hanger system composed of the simply supported hanger 3, the upper distribution beam 4, the boom 5, the lower distribution beam 6 and the crossbeam 61 , setting the load on the crossbeam 61 is carried out by sand bag embankment and laying waterproof tarpaulin in the low groove in the sand bag embankment and then injecting water into the tarpaulin;
S20. 通过28t螺旋升降千斤顶54顶推升降块53提升吊杆5，通过各所述吊杆5提升下分配梁6，所述模板系统62随下分配梁6一起上升至浇筑位； S20. Push the lifting block 53 to lift the suspender 5 through the 28t spiral lifting jack 54, lift the lower distribution beam 6 through each of the suspenders 5, and the formwork system 62 rises to the pouring position together with the lower distribution beam 6;
S30.绑扎钢筋，安装预应力管道和穿入钢绞线，调整模板系统62标高，浇筑混凝土，待混凝土强度及龄期达到设计要求后，张拉本浇筑节段内的预应力钢绞线和真空压浆； S30. Bind steel bars, install prestressed pipes and penetrate steel strands, adjust the elevation of formwork system 62, pour concrete, and stretch the prestressed steel strands and steel strands in the pouring section after the concrete strength and age meet the design requirements vacuum grouting;
S40. 通过28t螺旋升降千斤顶54顶推升降块53后下放吊杆5，通过各所述吊杆5下放下分配梁6，所述模板系统62随下分配梁6一起下降至完全离开已浇筑完成的小横梁、小纵梁及桥面板混凝土； S40. Push the lifting block 53 through the 28t screw lifting jack 54 and then lower the suspenders 5, lower the distribution beam 6 through each of the suspenders 5, and drop the formwork system 62 together with the lower distribution beam 6 to completely leave the pouring completed Concrete for small beams, small longitudinal girders and bridge decks;
S50.在后侧已浇筑的节段混凝土上安装行走吊带7，所述行走吊带7的下端连接吊挂滚轮71，将7条所述下分配梁6中的5条下分配梁6后端接长后套入吊挂滚轮71中，使之能自由滚动移动，在简支吊架3两端部下方的支座31前端安装牵引卷扬机、滑车组及钢丝绳，加强固定滑道2，在滑道2顶面上涂抹锂基脂，用卷扬机牵引支座31，牵引简支吊架3沿所述滑道2顶面向前移动至下一浇筑节段； S50. Install the walking sling 7 on the segmental concrete that has been poured on the rear side, the lower end of the walking sling 7 is connected to the hanging roller 71, and the rear ends of 5 of the 7 lower distribution beams 6 are connected Put it in the hanging roller 71 after a long time, so that it can freely roll and move, install a traction winch, a pulley block and a wire rope at the front end of the bearing 31 below the two ends of the simply supported hanger 3, strengthen the fixed slideway 2, 2 Apply lithium-based grease on the top surface, use a hoist to pull the support 31, and pull the simply supported hanger 3 to move forward along the top surface of the slideway 2 to the next pouring section;
S60.重复步骤S20～S50，完成全部节段的浇筑施工。 S60. Steps S20-S50 are repeated to complete the pouring construction of all segments.
S70.最后一跨小横梁、小纵梁及桥面板浇筑完成后，将下分配梁6、横梁61及底模系统62通过28t螺旋升降千斤顶54顶升下放接长吊杆5使其放至地面拆除，梁面的简支吊架3及滑道2系统等采用塔吊或梁面汽车吊机拆除。 S70. After the pouring of the last small crossbeam, small longitudinal girder and bridge deck is completed, the lower distribution beam 6, crossbeam 61 and bottom formwork system 62 are lifted and lowered by the 28t screw lifting jack 54 to connect the long suspender 5 to the ground For dismantling, the simply supported hanger 3 and the slideway 2 system on the beam surface shall be dismantled by a tower crane or a truck crane on the beam surface.
本拱桥小横梁、小纵梁及桥面板现浇施工移动吊架利用两侧边已浇的边主梁1为支点，在两侧已浇的边主梁1间设置简支吊架3，已浇的边主梁1上设置滑道2，滑道2既能够承受施工荷载，又能作为滑移用的滑移基座。在简支吊架3上方设置若干上分配梁4，各上分配梁4设置承重吊杆5。吊杆5下端连接下分配梁6，下分配梁6上铺设横梁61，上分配梁4与下分配梁6一一对应，穿入吊杆5锚固，横梁61上安装有模板系统62。施工时，通过吊杆5起升模板系统62到位，浇筑小横梁、小纵梁及桥面板，待混凝土强度及龄期达到设计要求后，张拉本浇筑节段内小横梁中的预应力钢绞线和真压浆后，通过各吊杆5下放模板系统62，然后通过牵引系统牵引使其移动至下一浇筑节段。不断往复循环，直到完成全部小横梁、小纵梁及桥面板的施工。 The cast-in-place construction mobile hangers of the small beams, small longitudinal beams and bridge decks of the arch bridge use the side girders 1 that have been poured on both sides as the fulcrum, and the simply supported hangers 3 are set between the side girders 1 that have been poured on both sides. A slideway 2 is arranged on the poured side girder 1, and the slideway 2 can not only bear the construction load, but also be used as a sliding base for sliding. A number of upper distribution beams 4 are arranged above the simply supported hanger 3 , and each upper distribution beam 4 is provided with a load-bearing suspender 5 . The lower end of the boom 5 is connected to the lower distribution beam 6, and a beam 61 is laid on the lower distribution beam 6. The upper distribution beam 4 corresponds to the lower distribution beam 6 one by one, penetrates the boom 5 for anchoring, and a formwork system 62 is installed on the beam 61. During construction, the formwork system 62 is lifted into place by the boom 5, and the small beams, small longitudinal beams and bridge decks are poured. After the strength and age of the concrete meet the design requirements, the prestressed steel in the small beams in the pouring section is stretched. After stranding and true grouting, the formwork system 62 is lowered through each suspender 5, and then moved to the next pouring segment by being pulled by the traction system. Continuous reciprocating cycle until the construction of all small beams, small longitudinal beams and bridge decks is completed.
该吊架系统一次拼装，长期使用，直到最后一跨完成都不需装拆，也不需要再次预压，施工期间不需要大型机械吊装，省材料省人工，可加快工期。本结构消耗辅助材料较少；施工完成一跨后可移动至下一跨，使用方便；无落地支架，所有施工过程均在可移动的施工平台上完成，减少高空作业时间，安全风险较低，且安装完成后不需大型吊装设备配合施工，无落地式支撑系统，不受软弱基础、河流等不利地形影响，可在复杂环境下的实施，不受地理环境限制。 The hanger system is assembled once and used for a long time. It does not need to be assembled and disassembled until the last span is completed, and it does not need to be preloaded again. During the construction period, no large-scale mechanical hoisting is required, which saves materials and labor, and can speed up the construction period. This structure consumes less auxiliary materials; after the construction is completed, one span can be moved to the next span, which is convenient to use; there is no floor support, and all construction processes are completed on a movable construction platform, which reduces the time for high-altitude operations and lowers safety risks. And after the installation is completed, there is no need for large-scale hoisting equipment to cooperate with the construction, there is no floor support system, and it is not affected by unfavorable terrain such as weak foundations and rivers. It can be implemented in complex environments and is not restricted by geographical environments.
当然，本发明创造并不局限于上述实施方式，熟悉本领域的技术人员在不违背本发明精神的前提下还可作出等同变形或替换，这些等同的变型或替换均包含在本申请权利要求所限定的范围内。 Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art can also make equivalent modifications or replacements without violating the spirit of the present invention. These equivalent modifications or replacements are all included in the claims of this application. within a limited range.
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| CN115059026A (en) * | 2022-07-26 | 2022-09-16 | 中交(福州)建设有限公司 | Construction method for reversely hoisting cast-in-place bridge deck slab by supporting steel beam on top of sluice pier |
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| CN110792038A (en) * | 2019-11-11 | 2020-02-14 | 山东交通学院 | A self-propelled hanging formwork tool and method for high-altitude cast-in-place beams of tied arch bridges |
| CN110792038B (en) * | 2019-11-11 | 2021-06-25 | 山东交通学院 | A self-propelled hanging formwork tool and method for high-altitude cast-in-place beams of tied arch bridges |
| CN111691298A (en) * | 2020-04-21 | 2020-09-22 | 中铁广州工程局集团有限公司 | Construction method for wide section of half-through arch bridge |
| GB2599295A (en) * | 2020-04-21 | 2022-03-30 | China Railway Guangzhou Eng Group Co Ltd | Construction system for widened section of half-through arch bridge |
| WO2021212921A1 (en) * | 2020-04-21 | 2021-10-28 | 中铁广州工程局集团有限公司 | Construction system for widened section of half-through arch bridge |
| GB2599295B (en) * | 2020-04-21 | 2024-09-18 | China Railway Guangzhou Eng Group Co Ltd | Construction system for widened section of half-through arch bridge |
| CN112211098A (en) * | 2020-10-12 | 2021-01-12 | 安徽建筑大学 | Bolt connection device between prefabricated bridge floor boards of assembled bridge |
| CN112709140A (en) * | 2020-12-23 | 2021-04-27 | 中铁广州工程局集团有限公司 | Construction method for concrete box girder of three-hole hanging bracket and half-through basket steel tube concrete arch bridge |
| CN112627048A (en) * | 2021-01-07 | 2021-04-09 | 中铁十六局集团第三工程有限公司 | Comprehensive prepressing method and device for tied arch bridge beam suspension construction beam lattice system |
| CN112878204A (en) * | 2021-02-04 | 2021-06-01 | 湖南省第六工程有限公司 | Construction process of cast-in-place anchor beam hanger system |
| CN113863660A (en) * | 2021-10-26 | 2021-12-31 | 中国铁路设计集团有限公司 | Suspended template system of underpass railway bridge pile plate structure and construction method |
| CN114438889A (en) * | 2022-01-25 | 2022-05-06 | 中国十九冶集团有限公司 | Construction method for pouring cast-in-situ bridge deck between reinforced concrete composite beams |
| CN114438889B (en) * | 2022-01-25 | 2023-07-11 | 中国十九冶集团有限公司 | Construction method for pouring steel-concrete composite Liang Liangjian cast-in-situ bridge deck |
| CN114718010A (en) * | 2022-05-19 | 2022-07-08 | 中交第二航务工程局有限公司 | A retractable multifunctional assembled suspension platform |
| CN115059026A (en) * | 2022-07-26 | 2022-09-16 | 中交(福州)建设有限公司 | Construction method for reversely hoisting cast-in-place bridge deck slab by supporting steel beam on top of sluice pier |
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