CN204343174U - A Construction Support for No. 0 Block of Prestressed Concrete Cantilevered Continuous Beam - Google Patents

A Construction Support for No. 0 Block of Prestressed Concrete Cantilevered Continuous Beam Download PDF

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CN204343174U
CN204343174U CN201420838768.1U CN201420838768U CN204343174U CN 204343174 U CN204343174 U CN 204343174U CN 201420838768 U CN201420838768 U CN 201420838768U CN 204343174 U CN204343174 U CN 204343174U
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construction
support
prestressed
triangular steel
construction support
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张小勇
郭佳
方国土
沈峤昕
徐美贞
陈静
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Zhejiang Chengbang Landscape Co ltd
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Zhejiang Chengbang Landscape Co ltd
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Abstract

The utility model discloses a prestressed concrete hangs and waters continuous beam zero number piece construction support, this construction support is equipped with the preformed hole including fixing the three angle steel trusses in the pier stud both sides on the pier stud, wears to be equipped with the prestressing tendons in the preformed hole, and the three angle steel trusses pass through the prestressing tendons and install on the pier stud. The construction bracket of the utility model is directly built on the basis of the pier stud, and the raw materials are saved on the premise of ensuring the stability of the built foundation; the triangular steel truss is arranged on the pier stud through the prestressed tendons and the matched components, so that the final stress points of the construction support are concentrated on the stretched prestressed tendons and the support seat, and the structural stability of the construction support is guaranteed by utilizing the high bearing capacity of the prestressed tendons and the support seat; in addition, a supporting foundation does not need to be additionally erected in the construction process, field high-altitude welding and cutting operations are not needed, all materials can be directly disassembled and recycled after construction is finished, manpower and materials are saved, the construction period is effectively shortened, the influence on the construction environment is reduced, and the method is green and environment-friendly.

Description

一种预应力砼悬浇连续梁零号块施工支架A Construction Support for No. 0 Block of Prestressed Concrete Cantilevered Continuous Beam

技术领域technical field

本实用新型属于道路桥梁建筑施工领域,具体涉及一种预应力砼悬浇连续梁零号块施工支架。The utility model belongs to the field of road and bridge building construction, in particular to a zero-block construction support for prestressed concrete cantilevered continuous girders.

背景技术Background technique

随着技术进步及新材料的应用,大跨度的钢筋混凝土连续梁被广泛运用于跨越公路、铁路、河流的桥梁工程中。在连续梁悬臂浇筑的施工过程中,零号块作为墩顶上面的梁体结构,是挂篮拼装的作业平台。With the advancement of technology and the application of new materials, long-span reinforced concrete continuous beams are widely used in bridge projects spanning roads, railways, and rivers. During the construction process of continuous beam cantilever pouring, the zero block is used as the beam structure on the top of the pier, and is the working platform for the assembly of hanging baskets.

目前深水墩顶和陆地超高墩顶预应力砼零号块浇筑多采用支架施工,常用的施工支架及搭建方法主要有三种,包括:①从陆地直接搭设钢管支架,②水中埋设钢管桩形成支架体系,③先在墩柱内预埋钢筋或钢板,拆模后在该钢筋或钢板上焊接上三角钢桁架,然后在三角钢桁架上设横向分配梁+纵向定型调坡钢架。其中,第三种施工支架是目前较为理想的。At present, the prestressed concrete zero-block pouring of deep water pier tops and super high land pier tops mostly adopts support construction. There are three commonly used construction supports and construction methods, including: ① directly erecting steel pipe supports from land, ② burying steel pipe piles in water to form Supporting system, ③ pre-embed steel bars or steel plates in the pier columns, and weld triangular steel trusses on the steel bars or steel plates after removing the formwork, and then set horizontal distribution beams + vertical slope adjustment steel frames on the triangular steel trusses. Among them, the third construction support is currently more ideal.

如公告号为CN 203977301 U的中国专利文献公开了一种桥体悬臂砼零号块施工斜撑托架,该斜撑托架,包括承台及工字钢纵梁,承台与纵梁间设置立柱,立柱与纵梁两端部设置斜撑结构,斜撑结构底部由承台支撑,使承台与纵梁间形成三角桁架支撑,所述立柱与纵梁连接处,向斜撑结构中部固连有斜拉结构,所示斜撑结构采用钢管,斜拉结构采用工字钢。For example, the Chinese patent document with the announcement number CN 203977301 U discloses a kind of cantilever concrete zero block construction diagonal brace bracket for the bridge body. Set up columns, set up diagonal brace structures at both ends of the columns and longitudinal beams, the bottom of the diagonal brace structures is supported by caps, so that a triangular truss support is formed between the caps and the longitudinal beams, and the connection between the columns and the longitudinal beams is towards the middle of the diagonal brace structure. The fixed connection has a cable-stayed structure, and the shown diagonal-bracing structure adopts steel pipes, and the cable-stayed structure adopts I-beam.

如公告号为CN 202347446 U的中国专利文献公开了一种钢筋混凝土连续梁零号块施工支撑结构,该支撑结构以设有预埋钢板的承台为基础,位于承台上方的纵梁以及位于承台与纵梁之间的支撑结构在墩身的两侧对称分布,所述支撑结构包括直立在承台与墩身之间的各根直立柱,以及在顶部沿纵向向墩身外侧倾斜的斜撑,形成承台与纵梁之间的三角桁架支撑;所述直立柱和斜撑采用钢管柱。For example, the Chinese patent document with the notification number CN 202347446 U discloses a construction support structure for the zero-block construction of reinforced concrete continuous beams. The support structure between the cap and the longitudinal beam is symmetrically distributed on both sides of the pier body, the support structure includes each upright column standing between the cap and the pier body, and the vertical column at the top that is inclined longitudinally to the outside of the pier body Diagonal braces form a triangular truss support between the cap and the longitudinal beams; the upright columns and diagonal braces are made of steel pipe columns.

这三种施工支架及搭建方法的不足之处在于,①陆地超高墩直接从地面搭设支架最简便,但安全性差、搭拆时间长、材料用量大;②水中埋设钢管桩搭设支架,施工复杂,水中难以切割,费用较大,施工周期长;③预埋钢筋或钢板再焊接三角钢桁架的方法工序比较烦琐,现场高空立焊安装难度大、质量不容易保证,安全隐患较大;并且装卸过程也比较费时费工(安装时需进行大量焊接,拆卸时需高空切割),梁底定型钢架焊接制作复杂,不能很好适应不同梁底坡度的改变(很多情况下只能使用一次),通用性差;预埋件不能重复利用,一次性消耗完毕(如钢筋、钢板等)。The disadvantages of these three construction supports and construction methods are: ① It is the easiest to build supports directly from the ground for super-high piers on land, but the safety is poor, it takes a long time to build and disassemble, and the amount of materials is large; Complex, difficult to cut in water, high cost, and long construction period; ③The method of pre-embedding steel bars or steel plates and then welding triangular steel trusses is relatively cumbersome, and the installation of high-altitude vertical welding on site is difficult, the quality is not easy to guarantee, and the safety hazard is relatively large; and The loading and unloading process is also time-consuming and labor-intensive (a large amount of welding is required for installation, and high-altitude cutting is required for disassembly), and the welding of the shaped steel frame at the bottom of the beam is complicated, and it cannot adapt well to changes in the slope of different beam bottoms (in many cases, it can only be used once) , poor versatility; embedded parts cannot be reused, and are consumed at one time (such as steel bars, steel plates, etc.).

实用新型内容Utility model content

本实用新型提供了一种预应力砼悬浇连续梁零号块施工支架,该施工支架重复利用率高,降低了施工成本,装配过程简单易操作,缩短了工期。The utility model provides a prestressed concrete cantilever cast continuous beam zero-block construction support, which has a high reutilization rate, reduces construction cost, is simple and easy to operate in the assembly process, and shortens the construction period.

一种预应力砼悬浇连续梁零号块施工支架,包括固定在墩柱两侧的三角钢桁架,所述墩柱上设有预留孔,预留孔内穿设有预应力筋,所述三角钢桁架通过预应力筋安装在墩柱上。A prestressed concrete cantilevered continuous beam zero-block construction support, including triangular steel trusses fixed on both sides of the pier column, the pier column is provided with a reserved hole, and prestressed tendons are pierced in the reserved hole. The triangular steel trusses are installed on the pier columns through prestressed tendons.

本实用新型的施工支架不必另外搭建支承基础,直接以墩柱为基础搭建,在保证搭建基础稳固的前提下节约了原材料;将三角钢桁架通过预应力筋安装在墩柱上,一方面,施工支架的最终受力由被拉伸的预应力筋承担,预应力筋具有较为理想的承载力,保证了施工支架的结构稳定性;另一方面,施工完成后预应力筋、三角钢桁架等材料均可直接拆卸,再次利用,降低了施工成本。The construction support of the utility model does not need to build additional support foundations, and is directly built on the pier column, which saves raw materials on the premise of ensuring the stability of the foundation; the triangular steel truss is installed on the pier column through prestressed tendons. On the one hand, the construction The final force of the bracket is borne by the stretched prestressed tendons. The prestressed tendons have a relatively ideal bearing capacity, which ensures the structural stability of the construction bracket; All can be directly disassembled and reused, which reduces the construction cost.

本实用新型中,所述三角钢桁架的安装方式为:In the utility model, the installation method of the triangular steel truss is:

所述墩柱的侧壁通过第一预应力筋固定有支撑座,通过第二预应力筋固定有连接件;所述三角钢桁架的底部抵靠在支撑座上,三角钢桁架的顶部通过连接件的束缚贴靠在墩柱的侧壁上。The side wall of the pier column is fixed with a support base through the first prestressed tendon, and a connecting piece is fixed through the second prestressed tendon; the bottom of the triangular steel truss is against the support base, and the top of the triangular steel truss is connected by The restraint of the piece rests against the side wall of the pier.

通过拉伸锚固第一预应力筋固定支撑座,支撑座作为三角钢桁架的支点,将三角钢桁架受力转移至第一预应力筋与支撑座上;通过拉伸锚固第二预应力筋固定连接件,连接件利用第二预应力筋的拉伸锚固力将三角钢桁架束缚在墩柱的侧壁上。Fix the supporting seat by stretching and anchoring the first prestressed tendon, and the supporting seat acts as the fulcrum of the triangular steel truss, transferring the force of the triangular steel truss to the first prestressed tendon and the supporting seat; fix by stretching and anchoring the second prestressed tendon A connecting piece, the connecting piece binds the triangular steel truss to the side wall of the pier column by using the tensile anchoring force of the second prestressed tendon.

作为优选,所述墩柱上处于柱面的预留孔开口处设有用于安装支撑座的预留槽,所述支撑座设有供第一预应力筋穿过的第一通孔。预留槽给支撑座提供了支点,使得支撑座能够承受更多来自三角钢桁架的压力,使三角钢桁架始终固定在预定位置上,保证施工支架的结构稳定性。Preferably, a reserved groove for installing a support base is provided at the opening of the reserved hole on the column surface on the pier column, and the support base is provided with a first through hole through which the first prestressing tendons pass. The reserved groove provides a fulcrum for the support seat, so that the support seat can withstand more pressure from the triangular steel truss, so that the triangular steel truss is always fixed at the predetermined position, ensuring the structural stability of the construction support.

所述连接件上也设有供预应力筋穿过的第二通孔。The connecting piece is also provided with a second through hole through which the prestressing tendons pass.

作为优选,所述三角钢桁架成对地布置在墩柱两侧,同属一对的三角钢桁架共用第一预应力筋和第二预应力筋。Preferably, the triangular steel trusses are arranged in pairs on both sides of the piers, and the triangular steel trusses belonging to the same pair share the first prestressing tendons and the second prestressing tendons.

作为进一步优选,在墩柱的同一侧面上,所述三角钢桁架至少有两个。如此可将上层浇筑模具架设在至少两个三角钢桁架,施工支架的载重由多根预应力筋分担,减少了每根预应力筋的承重,既提高施工支架的结构稳定性和安全性,又提高预应力筋的使用寿命。As a further preference, there are at least two triangular steel trusses on the same side of the pier column. In this way, the upper pouring mold can be erected on at least two triangular steel trusses, and the load of the construction support is shared by multiple prestressed tendons, which reduces the load bearing of each prestressed tendon, which not only improves the structural stability and safety of the construction support, but also Improve the service life of prestressed tendons.

作为优选,在墩柱的相邻侧面上,所述三角钢桁架错位布置。Preferably, the triangular steel trusses are staggered on adjacent side surfaces of the piers.

作为优选,所述三角钢桁架的转角处设有加强板。加强板用于提高三角钢桁架的承重能力。Preferably, a reinforcing plate is provided at the corner of the triangular steel truss. Stiffeners are used to increase the load-bearing capacity of triangular steel trusses.

作为进一步优选,所述三角钢桁架采用双拼工字钢焊接而成。As a further preference, the triangular steel truss is welded by double I-beams.

所述预应力砼悬浇连续梁零号块施工支架的搭建方法,包括:The construction method of the zero-block construction support of the prestressed concrete cantilevered continuous beam includes:

(1)浇筑墩柱时在所需位置预埋PVC管和木盒,分别形成预留孔和预留槽;(1) When pouring pier columns, pre-embed PVC pipes and wooden boxes at the required positions to form reserved holes and reserved grooves;

(2)待墩柱砼达到所需强度后,在相应的预留孔内分别穿入第一预应力筋和第二预应力筋;(2) After the concrete of the pier column reaches the required strength, penetrate the first prestressed tendons and the second prestressed tendons in the corresponding reserved holes;

(3)在预留槽内安装支撑座,第一预应力筋的两端伸出支撑座的第一通孔并固定锚具;(3) Install the support seat in the reserved groove, and the two ends of the first prestressed tendon protrude from the first through hole of the support seat and fix the anchor;

(4)将三角钢桁架的底部抵靠在支撑座上,将三角钢桁架的顶部置于墩柱与连接件之间,第二预应力筋的端部伸出连接件的第二通孔并固定锚具,将三角钢桁架锁紧并使之贴靠在墩柱的侧壁上;(4) Put the bottom of the triangular steel truss against the support seat, place the top of the triangular steel truss between the pier column and the connecting piece, the end of the second prestressed tendon extends out of the second through hole of the connecting piece and Fix the anchor, lock the triangular steel truss and make it lean against the side wall of the pier column;

(5)在三角钢桁架的顶面按照常规工序架设H型钢纵梁,在H型钢纵梁上方搭设重型门式钢管支架,在门式钢管支架的顶托上安装木档,铺设竹胶板,竹胶板即为浇筑模具,至此完成施工支架的搭建。(5) On the top surface of the triangular steel truss, erect the H-shaped steel longitudinal beam according to the conventional procedure, set up the heavy-duty portal-type steel pipe support above the H-shaped steel longitudinal beam, install wooden shelves on the top support of the portal-type steel pipe support, and lay bamboo plywood, The bamboo plywood is the pouring mold, and the construction of the construction support is completed so far.

施工支架搭建完成后,即可焊接绑扎钢筋,横、纵向对称浇筑砼,待砼达到设计强度后,依次拆除施工支架,在预留孔和预留槽内灌浆,然后进入下一轮的施工。After the construction support is completed, the steel bars can be welded and bound, and the concrete is poured horizontally and vertically symmetrically. After the concrete reaches the design strength, the construction support is removed in turn, and the reserved holes and grooves are grouted, and then enter the next round of construction.

需要注意的是,三角钢桁架安装前应施加相应预应力,以抵消预应力筋的伸长量,以确保施工支架安全性。It should be noted that the corresponding prestress should be applied before the installation of the triangular steel truss to offset the elongation of the prestressed tendons to ensure the safety of the construction support.

与现有技术相比,本实用新型的有益效果为:Compared with the prior art, the beneficial effects of the utility model are:

本实用新型的施工支架直接以墩柱为基础搭建,在保证搭建基础稳固的前提下节约了原材料;将三角钢桁架通过预应力筋安装在墩柱上,一方面,施工支架的最终受力由被拉伸的预应力筋和支撑座共同承担,预应力筋与支撑座均有较为理想的承载力,保证了施工支架的结构稳定性;另一方面,施工过程中不必另外搭建支承基础,无须进行现场高空焊接、切割操作,施工完成后所有的材料均可直接拆卸并重复利用,较大程度节约人工和材料,有效的缩短工期,减少对施工环境的影响,绿色环保。The construction support of the utility model is directly built on the basis of pier columns, which saves raw materials under the premise of ensuring that the foundation is stable; the triangular steel truss is installed on the pier columns through prestressed tendons. On the one hand, the final force of the construction support is determined by The stretched prestressed tendons and the supporting seat are shared, and both the prestressed tendons and the supporting seat have a relatively ideal bearing capacity, which ensures the structural stability of the construction support; on the other hand, there is no need to build additional supporting foundations during the construction process, and no need On-site high-altitude welding and cutting operations are carried out. After the construction is completed, all materials can be directly disassembled and reused, which saves labor and materials to a large extent, effectively shortens the construction period, reduces the impact on the construction environment, and is green and environmentally friendly.

附图说明Description of drawings

图1为本实用新型一种预应力砼悬浇连续梁零号块施工支架的结构示意图;Fig. 1 is the structural representation of a kind of prestressed concrete cantilevered continuous girder zero block construction support of the utility model;

图2为本实用新型一种预应力砼悬浇连续梁零号块施工支架在另一视角下的结构示意图;Fig. 2 is a structural schematic view of the zero block construction support of a prestressed concrete cantilevered continuous beam of the utility model under another viewing angle;

其中,1:墩柱,11:预留孔,12:预留槽;21:第一预应力筋,22:第二预应力筋;31:支撑座,32:连接件;4:锚具;5:三角钢桁架,51:加强板,52:水平段,53:竖直段,54:斜撑段;6:H型钢纵梁;7:重型门式钢管支架;8:木档;9:竹胶板;10:箱梁。Among them, 1: pier column, 11: reserved hole, 12: reserved groove; 21: first prestressed tendon, 22: second prestressed tendon; 31: support seat, 32: connector; 4: anchorage; 5: Triangular steel truss, 51: Strengthening plate, 52: Horizontal section, 53: Vertical section, 54: Diagonal bracing section; 6: H-shaped steel longitudinal beam; 7: Heavy-duty portal steel pipe support; 8: Wooden rail; 9: Bamboo plywood; 10: box girder.

具体实施方式Detailed ways

如图1、图2所示,本实施例一种预应力砼悬浇连续梁零号块施工支架,该施工支架包括设置在墩柱1上的预留孔11,预留孔11贯穿墩柱1,同一预留孔11的两端开口分别处在墩柱1的两相对侧面上。本实施例中,在墩柱1的两相对侧面上,预留孔11分为平行布置的上下两排,每排预留孔11又分为左右两对,在一个墩柱1侧面上,处在左侧的上下两对预留孔11共同用于安装一个三角钢桁架5,处于右侧的上下两对预留孔11共同用于安装一个三角钢桁架5。而在墩柱1的相邻侧面上,预留孔11是错位布置的(上下两排,每排四对)。As shown in Fig. 1 and Fig. 2, this embodiment is a prestressed concrete cantilevered continuous beam zero block construction support, the construction support includes a reserved hole 11 arranged on the pier column 1, and the reserved hole 11 runs through the pier column 1. Openings at both ends of the same reserved hole 11 are respectively located on two opposite sides of the pier column 1 . In this embodiment, on the two opposite sides of the pier column 1, the reserved holes 11 are divided into upper and lower rows arranged in parallel, and each row of reserved holes 11 is divided into two pairs of left and right. The upper and lower pairs of reserved holes 11 on the left side are jointly used for installing a triangular steel truss 5 , and the upper and lower pairs of reserved holes 11 on the right side are jointly used for installing a triangular steel truss 5 . On the adjacent side of the pier column 1, the reserved holes 11 are misplaced (two rows up and down, four pairs in each row).

由图1可见,在下排预留孔11内穿设有第一预应力筋21,在上排预留孔11内穿设有第二预应力筋22。其中,穿设有第一预应力筋21的预留孔11的柱面开口处还设有预留槽12,预留槽12内安装有支撑座31,支撑座31内设有供第一预应力筋21穿过的第一通孔,第一预应力筋21的两端伸出支撑座31的第一通孔并固定锚具4。It can be seen from FIG. 1 that the first prestressed tendons 21 are pierced in the reserved holes 11 in the lower row, and the second prestressed tendons 22 are pierced in the reserved holes 11 in the upper row. Wherein, there is also a reserved groove 12 at the opening of the cylinder of the reserved hole 11 that is pierced with the first prestressed tendon 21, and a support seat 31 is installed in the reserved groove 12, and a support seat 31 is provided in the support seat 31 for the first prestressed rib. The first through hole through which the stress tendon 21 passes, and the two ends of the first prestress tendon 21 protrude from the first through hole of the support base 31 and fix the anchor 4 .

第二预应力筋22的两端各安装有连接件32,连接件32内设有供第二预应力筋22穿过的第二通孔,第二预应力筋22的两端伸出第二通孔并固定锚具4。The two ends of the second prestressed tendons 22 are respectively equipped with connectors 32, and the second through holes for the second prestressed tendons 22 to pass are provided in the connectors 32, and the two ends of the second prestressed tendons 22 stretch out the second Through the hole and fix the anchor 4.

本实施例中,支撑座31为倒L型,倒L型的支撑座31一部分嵌入预留槽12内,一部分与墩柱1的侧壁相贴合;连接件32为一块双拼工字钢。并且,在同一个支撑座31穿设有两根第一预应力筋21,在同一个连接件32上穿设有两根第二预应力筋22。In this embodiment, the support seat 31 is inverted L-shaped, and a part of the inverted L-shaped support seat 31 is embedded in the reserved groove 12, and a part is attached to the side wall of the pier column 1; the connecting piece 32 is a double-piece I-beam . Moreover, two first prestressed tendons 21 are pierced on the same support base 31 , and two second prestressed tendons 22 are pierced on the same connecting piece 32 .

由图1可见,墩柱1相对两侧柱面固定有三角钢桁架5,三角钢桁架5成对地布置在墩柱1两侧柱面,同属一对的三角钢桁架5共用第一预应力筋21和第二预应力筋22。It can be seen from Fig. 1 that triangular steel trusses 5 are fixed on the opposite sides of the pier column 1, and the triangular steel trusses 5 are arranged in pairs on both sides of the pier column 1, and the triangular steel trusses 5 belonging to the same pair share the first prestress Rib 21 and the second prestressed tendon 22.

本实施例中,三角钢桁架5包括依次首尾焊接的水平段52、竖直段53和斜撑段54,水平段52、竖直段53和斜撑段54均采用双拼工字钢,三角钢桁架5的三个转角处均设有加强板51。In this embodiment, the triangular steel truss 5 includes a horizontal section 52, a vertical section 53 and a brace section 54 which are welded end to end in sequence. Three corners of the steel truss 5 are provided with reinforcing plates 51 .

由图1、图2可见,三角钢桁架5竖直段53的下端抵靠在支撑座31上,三角钢桁架5竖直段53的上端被连接件32锁紧而贴靠在墩柱1的侧壁上。It can be seen from Fig. 1 and Fig. 2 that the lower end of the vertical section 53 of the triangular steel truss 5 leans against the support base 31, and the upper end of the vertical section 53 of the triangular steel truss 5 is locked by the connecting piece 32 and abuts against the bottom of the pier 1. on the side wall.

三角钢桁架5的水平段52上按照设计间距架设有一排H型钢纵梁6,H型钢纵梁6上方搭设有重型门式钢管支架7,门式钢管支架7的顶托上安装有木档8且铺设有竹胶板9。A row of H-shaped steel longitudinal beams 6 are erected on the horizontal section 52 of the triangular steel truss 5 according to the designed spacing, and a heavy-duty portal-type steel pipe support 7 is erected above the H-shaped steel longitudinal beams 6, and wooden shelves 8 are installed on the top support of the portal-type steel pipe support 7 And lay bamboo plywood 9.

本实施例中,该施工支架的搭建方法为:In the present embodiment, the building method of this construction support is:

(1)浇筑墩柱1时在所需位置预埋PVC管,形成预留孔11,在PVC管的两端预埋木盒,形成预留槽12;(1) When pouring the pier column 1, pre-embed the PVC pipe at the required position to form a reserved hole 11, and pre-embed wooden boxes at both ends of the PVC pipe to form a reserved groove 12;

(2)待墩柱1砼达到所需强度后,在相应的预留孔11内分别穿入第一预应力筋21和第二预应力筋22;(2) After the concrete of the pier column 1 reaches the required strength, penetrate the first prestressed tendons 21 and the second prestressed tendons 22 in the corresponding reserved holes 11;

(3)在预留槽12内安装支撑座31,第一预应力筋21的两端伸出支撑座31的第一通孔并固定锚具4;(3) Install the support seat 31 in the reserved groove 12, and the two ends of the first prestressed rib 21 stretch out the first through hole of the support seat 31 and fix the anchor 4;

(4)将三角钢桁架5的底部抵靠在支撑座31上,将三角钢桁架5的顶部置于墩柱1与的连接件32之间,第二预应力筋22的端部伸出连接件32的第二通孔并固定锚具4,将三角钢桁架5锁紧并使之贴靠在墩柱1的侧壁上;(4) The bottom of the triangular steel truss 5 is leaned against the supporting seat 31, the top of the triangular steel truss 5 is placed between the pier column 1 and the connector 32, and the end of the second prestressed tendon 22 stretches out to connect The second through hole of the member 32 and fix the anchor 4, lock the triangular steel truss 5 and make it lean against the side wall of the pier 1;

(5)在三角钢桁架5的顶面按照常规工序在架设H型钢纵梁6,在H型钢纵梁6上方搭设门式钢管支架7,在门式钢管支架7的顶托上安装木档8,铺设竹胶板9,竹胶板9即作为浇筑模具,至此完成施工支架的搭建。(5) On the top surface of the triangular steel truss 5, the H-shaped steel longitudinal beam 6 is erected according to the conventional procedure, and the portal-type steel pipe support 7 is set up above the H-shaped steel longitudinal beam 6, and the wooden frame 8 is installed on the jacking of the portal-type steel pipe support 7 , the bamboo plywood 9 is laid, and the bamboo plywood 9 is used as a pouring mold, so far the construction of the construction support is completed.

施工支架搭建完成后,即可焊接绑扎钢筋,横、纵向对称浇筑砼,待砼达到预定强度后,依次拆除施工支架,在预留孔11和预留槽12内灌浆,然后进入下一轮的施工。After the construction support is built, the steel bars can be welded and bound, and the concrete is poured horizontally and vertically symmetrically. After the concrete reaches the predetermined strength, the construction support is removed in turn, and grouting is performed in the reserved hole 11 and the reserved groove 12, and then enters the next round of construction. construction.

需要注意的是,三角钢桁架5安装前应施加相应预应力,以抵消预应力筋的伸长量,以确保施工支架安全性。It should be noted that the corresponding prestress should be applied before the installation of the triangular steel truss 5 to offset the elongation of the prestressed tendons to ensure the safety of the construction support.

Claims (8)

1.一种预应力砼悬浇连续梁零号块施工支架,包括固定在墩柱两侧的三角钢桁架,其特征在于,所述墩柱上设有预留孔,预留孔内穿设有预应力筋,所述三角钢桁架通过预应力筋安装在墩柱上。1. A prestressed concrete cantilevered continuous beam zero-block construction support, including triangular steel trusses fixed on both sides of the pier column, is characterized in that the pier column is provided with a reserved hole, and the reserved hole is pierced There are prestressed tendons, and the triangular steel truss is installed on the pier column through the prestressed tendons. 2.如权利要求1所述的预应力砼悬浇连续梁零号块施工支架,其特征在于,所述三角钢桁架的安装方式为:2. The prestressed concrete cantilevered continuous beam zero block construction support as claimed in claim 1, wherein the installation method of the triangular steel truss is: 所述墩柱的侧壁通过第一预应力筋固定有支撑座,通过第二预应力筋固定有连接件;所述三角钢桁架的底部抵靠在支撑座上,三角钢桁架的顶部通过连接件的束缚贴靠在墩柱的侧壁上。The side wall of the pier column is fixed with a support base through the first prestressed tendon, and a connecting piece is fixed through the second prestressed tendon; the bottom of the triangular steel truss is against the support base, and the top of the triangular steel truss is connected by The restraint of the piece rests against the side wall of the pier. 3.如权利要求2所述的预应力砼悬浇连续梁零号块施工支架,其特征在于,所述墩柱上处于柱面的预留孔开口处设有用于安装支撑座的预留槽,所述支撑座设有供第一预应力筋穿过的第一通孔。3. The prestressed concrete cantilevered continuous beam zero block construction support as claimed in claim 2, characterized in that, the opening of the reserved hole on the column surface on the pier column is provided with a reserved groove for installing the support seat , the support seat is provided with a first through hole through which the first prestressing tendon passes. 4.如权利要求2所述的预应力砼悬浇连续梁零号块施工支架,其特征在于,所述三角钢桁架成对地布置在墩柱两侧,同属一对的三角钢桁架共用第一预应力筋和第二预应力筋。4. The zero-block construction support for prestressed concrete cantilevered continuous beams as claimed in claim 2, wherein the triangular steel trusses are arranged in pairs on both sides of the pier columns, and the triangular steel trusses belonging to the same pair share the first A prestressing tendon and a second prestressing tendon. 5.如权利要求4所述的预应力砼悬浇连续梁零号块施工支架,其特征在于,在墩柱的同一侧面上,所述三角钢桁架至少有两个。5. The prestressed concrete cantilevered continuous beam zero block construction support according to claim 4, characterized in that there are at least two triangular steel trusses on the same side of the pier column. 6.如权利要求4所述的预应力砼悬浇连续梁零号块施工支架,其特征在于,在墩柱的相邻侧面上,所述三角钢桁架错位布置。6. The zero-block construction support for prestressed concrete cantilevered continuous beams according to claim 4, characterized in that, on the adjacent side surfaces of the pier columns, the triangular steel trusses are arranged in dislocations. 7.如权利要求1~6任一所述的预应力砼悬浇连续梁零号块施工支架,其特征在于,所述三角钢桁架的转角处设有加强板。7. The prestressed concrete cantilevered continuous girder zero block construction support according to any one of claims 1 to 6, characterized in that a reinforcing plate is provided at the corner of the triangular steel truss. 8.如权利要求7所述的预应力砼悬浇连续梁零号块施工支架,其特征在于,所述三角钢桁架采用双拼工字钢焊接而成。8. The prestressed concrete cantilevered continuous girder zero block construction support according to claim 7, characterized in that the triangular steel truss is welded by double I-beams.
CN201420838768.1U 2014-12-25 2014-12-25 A Construction Support for No. 0 Block of Prestressed Concrete Cantilevered Continuous Beam Expired - Fee Related CN204343174U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532758A (en) * 2014-12-25 2015-04-22 浙江诚邦园林股份有限公司 A Construction Support for No. 0 Block of Prestressed Concrete Cantilevered Continuous Beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532758A (en) * 2014-12-25 2015-04-22 浙江诚邦园林股份有限公司 A Construction Support for No. 0 Block of Prestressed Concrete Cantilevered Continuous Beam

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