CN110565501A - Side span consolidation-tower beam semi-floating mixed system concrete beam cable-stayed bridge - Google Patents
Side span consolidation-tower beam semi-floating mixed system concrete beam cable-stayed bridge Download PDFInfo
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed 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
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Abstract
本发明属于混凝土梁桥建设技术领域,具体涉及一种边跨固结‑塔梁半漂浮混合体系混凝土梁斜拉桥,包括桥塔、斜拉索、加劲梁以及位于所述加劲梁两端的两组边跨桥墩;每组边跨桥墩包括至少一个边跨桥墩;桥塔上设有支座,加劲梁的中部支承于所述支座上;加劲梁的两端分别支承于两组边跨桥墩上,每组边跨桥墩中至少有一个边跨桥墩与所述加劲梁固结;所述桥塔与加劲梁之间设有斜拉索,且所述斜拉索的两端分别与桥塔和加劲梁连接。本发明采用边跨桥墩与加劲梁固结、桥塔上设置支座支承加劲梁组合形成边跨固结‑塔梁半漂浮混合体系,通过边跨桥墩对加劲梁的柔性约束作用改善加劲梁的受力性能及竖向残余徐变变形,满足铁路行车要求。
The invention belongs to the technical field of concrete girder bridge construction, and in particular relates to a concrete girder cable-stayed bridge with a side-span consolidation-tower girder semi-floating hybrid system, including bridge towers, cable-stayed cables, stiffening beams and two bridges located at both ends of the stiffening beams. A set of side-span piers; each set of side-span piers includes at least one side-span pier; a support is provided on the bridge tower, and the middle part of the stiffening beam is supported on the support; the two ends of the stiffening beam are respectively supported on two sets of side-span piers In each group of side-span piers, at least one side-span pier is consolidated with the stiffening girder; there is a stay cable between the bridge tower and the stiffening girder, and the two ends of the stay cable are respectively connected to the bridge tower connected to stiffening beams. The invention adopts side-span piers and stiffening beams to be consolidated, and bridge towers are equipped with supports to support stiffening beams to form a side-span consolidation-tower girder semi-floating hybrid system, and improves the stability of the stiffening beams through the flexible restraint of side-span bridge piers on the stiffening beams. The mechanical performance and vertical residual creep deformation meet the requirements of railway operation.
Description
技术领域technical field
本发明属于混凝土梁桥建设技术领域,具体涉及一种边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥。The invention belongs to the technical field of concrete girder bridge construction, in particular to a concrete girder cable-stayed bridge with a side-span consolidation-tower girder semi-floating hybrid system.
背景技术Background technique
混凝土梁斜拉桥由于其施工方便、防腐养护费用低、工程造价省等优点在桥梁建设中应用较为广泛,现有的结构体系主要有四种形式:1、塔柱处塔墩固结、塔梁分离,加劲梁除了在边墩(及辅助墩)有支座支撑外,其余全部用斜拉索悬吊的漂浮体系;2、在漂浮体系的基础上,桥塔下横梁上设置纵桥向活动的竖向支座支撑加劲梁的半漂浮体系;3、加劲梁在边墩(及辅助墩)有支座支撑,塔柱处塔梁固结并设置固定支座支撑与加劲梁上的固结体系;4、塔柱处塔梁墩相互固结,加劲梁在边墩(及辅助墩)有支座支撑的刚构体系。但混凝土梁斜拉桥一直存在加劲梁竖向残余徐变变形较大的问题。Concrete girder cable-stayed bridges are widely used in bridge construction due to their advantages of convenient construction, low cost of anti-corrosion and maintenance, and low engineering cost. The beams are separated, except that the stiffened beams are supported by supports on the side piers (and auxiliary piers), the rest are all suspended by cable-stayed floating systems; 3. The stiffened beam is supported by supports on the side piers (and auxiliary piers), and the tower beam is consolidated at the tower column, and fixed supports are set to support the reinforcement on the stiffened beam. System; 4. A rigid frame system in which the tower beams and piers at the tower columns are mutually consolidated, and the stiffening beams are supported by supports at the side piers (and auxiliary piers). However, the concrete girder cable-stayed bridge has always had the problem of large vertical residual creep deformation of the stiffened girder.
由于公路运营对混凝土梁斜拉桥加劲梁的竖向残余徐变变形没有相关要求,因此,国内、外公路混凝土梁斜拉桥应用较广,如武汉长江二桥等。而国内大跨度铁路混凝土梁斜拉桥尚处于发展阶段,在建的乐清港支线铁路瓯江特大桥主桥为国内首座大跨度混凝土梁斜拉桥,其为主跨300m单线铁路混凝土梁斜拉桥,设计时速120km/h,主要是由于加劲梁竖向残余徐变变形较大,会影响到后期列车运营舒适度及安全,因此,铁路桥梁对加劲梁竖向残余徐变变形要求较高,一般不超过20mm,现有结构体系的混凝土梁斜拉桥难以满足这一要求。Since the road operation has no relevant requirements for the vertical residual creep deformation of the stiffening girder of concrete girder cable-stayed bridges, domestic and foreign highway concrete girder cable-stayed bridges are widely used, such as the Second Yangtze River Bridge in Wuhan. However, the domestic long-span railway concrete girder cable-stayed bridge is still in the development stage. The main bridge of the Oujiang Super Bridge of the Yueqing Port Branch Railway under construction is the first long-span concrete girder cable-stayed bridge in China. The design speed of the bridge is 120km/h, mainly because the vertical residual creep deformation of the stiffened beam is relatively large, which will affect the comfort and safety of train operation in the later stage. Therefore, railway bridges have higher requirements for the vertical residual creep deformation of the stiffened beam. Generally no more than 20mm, the concrete girder cable-stayed bridge with the existing structural system is difficult to meet this requirement.
发明内容Contents of the invention
为了克服上述现有技术存在的不足,本发明的目的是提供一种边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥,能够解决混凝土梁斜拉桥加劲梁竖向残余徐变变形较高的问题,推动混凝土梁斜拉桥在铁路桥梁建设领域的推广和应用。In order to overcome the deficiencies in the prior art mentioned above, the object of the present invention is to provide a concrete girder cable-stayed bridge with side-span consolidation-tower girder semi-floating hybrid system, which can solve the vertical residual creep deformation of the stiffening girder of the concrete girder cable-stayed bridge Higher problems promote the promotion and application of concrete girder cable-stayed bridges in the field of railway bridge construction.
为实现上述目的,本发明的技术方案为一种边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥,包括桥塔、斜拉索、加劲梁以及位于所述加劲梁两端的两组边跨桥墩;每组边跨桥墩包括至少一个边跨桥墩;所述桥塔上设有支座,所述加劲梁的中部支承于所述支座上;所述加劲梁的两端分别支承于两组边跨桥墩上,每组边跨桥墩中至少有一个边跨桥墩与所述加劲梁固结;所述桥塔与所述加劲梁之间设有斜拉索,且所述斜拉索的两端分别与所述桥塔和所述加劲梁连接。In order to achieve the above object, the technical solution of the present invention is a concrete girder cable-stayed bridge with a side-span consolidation-tower girder semi-floating hybrid system, including bridge towers, cable-stayed cables, stiffening beams, and two sets of bridges located at both ends of the stiffening beams. Side-span bridge piers; each group of side-span bridge piers includes at least one side-span bridge piers; a support is provided on the bridge tower, and the middle part of the stiffening beam is supported on the support; the two ends of the stiffening beam are respectively supported on On two sets of side-span piers, at least one side-span pier in each set of side-span piers is consolidated with the stiffening beam; stay cables are arranged between the bridge tower and the stiffening beam, and the stay cables The two ends of the bridge are respectively connected with the bridge tower and the stiffening beam.
进一步地,所述桥塔包括塔墩和塔柱,所述加劲梁的两侧均设置有塔柱,各所述塔柱的底部均与所述塔墩固结;所述支座固定于所述塔墩上,所述斜拉索的顶部与所述塔柱的顶部连接。Further, the bridge tower includes tower piers and tower columns, tower columns are arranged on both sides of the stiffened beam, and the bottom of each tower column is consolidated with the tower piers; the support is fixed on the On the tower pier, the top of the stay cable is connected to the top of the tower column.
更进一步地,所述加劲梁两侧的塔柱上均设有用于限制所述加劲梁沿横桥向移动的限位块。Furthermore, the pylons on both sides of the stiffened beam are provided with limiting blocks for limiting the movement of the stiffened beam along the transverse bridge.
进一步地,所述桥塔至少有一个,每个桥塔横桥向的两侧均通过多对斜拉索与所述加劲梁连接,且每对斜拉索分别与所述加劲梁顺桥向的两侧连接。Further, there is at least one pylon, and the two sides of each pylon in the transverse bridge direction are connected to the stiffening beam through multiple pairs of stay cables, and each pair of stay cables is respectively connected to the two sides of the stiffening beam along the bridge direction. side connection.
更进一步地,位于所述桥塔横桥向两侧的斜拉索相对于所述桥塔呈对称布置。Furthermore, the stay cables on both sides of the cross bridge of the bridge tower are arranged symmetrically with respect to the bridge tower.
更进一步地,位于所述加劲梁横桥向同一侧且位于的所述加劲梁顺桥向同一侧的斜拉索与所述加劲梁的连接点沿顺桥向方向等距间隔布置。Furthermore, the connection points between the stay cables and the stiffening beams located on the same side of the stiffening beam transverse bridge and on the same side of the stiffening beam along the bridge are arranged at equal intervals along the bridge direction.
更进一步地,位于所述加劲梁横桥向同一侧且位于的所述加劲梁顺桥向同一侧的斜拉索与所述桥塔的连接点沿所述桥塔的高度方向等距间隔布置。Furthermore, the connection points between the stay cables on the same side of the stiffening girder transverse bridge and the stiffening girder along the same side of the bridge and the bridge tower are arranged equidistantly along the height direction of the bridge tower.
进一步地,每组边跨桥墩均包括至少两个边跨桥墩,且所述边跨桥墩中,靠近所述桥塔的一个边跨桥墩与所述加劲梁固结,背离所述桥塔的一个边跨桥墩上设有支座,所述加劲梁支承于所述边跨桥墩的支座上。Further, each group of side-span piers includes at least two side-span piers, and among the side-span piers, one side-span pier close to the bridge tower is consolidated with the stiffening beam, and one of the side-span piers away from the bridge tower A support is provided on the side-span pier, and the stiffening beam is supported on the support of the side-span pier.
进一步地,所述桥塔设置于塔墩基础上,所述边跨桥墩设置于边墩基础上。Further, the bridge tower is set on the tower pier foundation, and the side-span bridge pier is set on the side pier foundation.
与现有技术相比,本发明的有益效果:Compared with prior art, the beneficial effect of the present invention:
(1)本发明采用边跨桥墩与加劲梁固结、桥塔上设置支座支承加劲梁组合形成边跨固结-塔梁半漂浮混合体系,通过边跨桥墩对加劲梁的柔性约束作用,改善加劲梁的受力性能及竖向残余徐变变形,满足铁路行车要求;(1) The present invention adopts side-span bridge piers and stiffening beams to be consolidated, and bridge towers are equipped with supports to support the stiffening beams to form a side-span consolidation-tower girder semi-floating hybrid system. Through the flexible restraint of side-span bridge piers on stiffening beams, Improve the mechanical performance and vertical residual creep deformation of the stiffened beam to meet the requirements of railway traffic;
(2)本发明的边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥的每组边跨桥墩中至少有一个边跨桥墩与加劲梁固结,可节省桥梁支座数量,降低工程造价,减少后期防腐养护费用;(2) At least one side-span pier in each set of side-span piers of the concrete girder cable-stayed bridge of the side-span consolidation-tower girder semi-floating hybrid system is consolidated with the stiffening beam, which can save the number of bridge supports and reduce engineering costs. Cost, reduce post-corrosion maintenance costs;
(3)本发明的边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥具有结构刚度大、施工方便、防腐养护费用低、工程造价省等优点;(3) The concrete girder cable-stayed bridge with side-span consolidation-tower girder semi-floating hybrid system of the present invention has the advantages of high structural rigidity, convenient construction, low cost of anti-corrosion and maintenance, and low engineering cost;
(4)本发明的边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥进一步扩宽了混凝土梁斜拉桥的适用范围,能有效推动混凝土梁斜拉桥在铁路桥梁建设领域的推广和应用。(4) The concrete girder cable-stayed bridge with side-span consolidation-tower girder semi-floating hybrid system further broadens the scope of application of concrete girder cable-stayed bridges, and can effectively promote the promotion of concrete girder cable-stayed bridges in the field of railway bridge construction and apply.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其它的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本发明实施例提供的边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥的结构示意图;Fig. 1 is the structural representation of the concrete girder cable-stayed bridge with side-span consolidation-tower beam semi-floating hybrid system provided by the embodiment of the present invention;
图2为本发明实施例提供的边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥的桥塔的横断面示意图;Fig. 2 is the cross-sectional schematic diagram of the pylon of the concrete girder cable-stayed bridge of side-span consolidation-tower beam semi-floating hybrid system provided by the embodiment of the present invention;
图中:1、边跨桥墩,11、边墩基础,2、加劲梁,3、桥塔,31、塔柱,32、塔墩,33、限位块,34、塔墩基础,4、斜拉索,5、支座。In the figure: 1. side-span bridge pier, 11. side pier foundation, 2. stiffening beam, 3. bridge tower, 31. tower column, 32. tower pier, 33. limit block, 34. tower pier foundation, 4. oblique Cable, 5, bearing.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在本发明的描述中,需要理解的是,术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention.
术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征;在本发明的描述中,除非另有说明,“多个”的含义是两个或两个以上。The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features; in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.
如图1-图2所示,本发明实施例提供一种边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥,包括桥塔3、斜拉索4、加劲梁2以及位于所述加劲梁2两端的两组边跨桥墩;每组边跨桥墩包括至少一个边跨桥墩1;桥塔3上设有支座5,加劲梁2的中部支承于支座5上;加劲梁2的两端分别支承于两组边跨桥墩上,每组边跨桥墩中至少有一个边跨桥墩1与加劲梁2固结;桥塔3与加劲梁2之间设有斜拉索4,且斜拉索4的两端分别与桥塔3和加劲梁2连接。本发明采用边跨桥墩1与加劲梁2固结、桥塔3上设置支座5支承加劲梁2组合形成边跨固结-塔梁半漂浮混合体系,工作时,边跨桥墩1可承受加劲梁2轴向、竖向作用力及引起的弯矩,并通过边跨桥墩1对加劲梁2柔性约束作用,有效地改善加劲梁2的受力性能及竖向残余徐变变形,满足铁路行车要求,进一步扩宽了混凝土梁斜拉桥的适用范围;且加劲梁2两端的每组边跨桥墩中至少有一个边跨桥墩1与加劲梁2固结,可节省桥梁支座5数量,降低工程造价,减少后期防腐养护费用。As shown in Figures 1-2, the embodiment of the present invention provides a concrete girder cable-stayed bridge with a side-span consolidation-tower beam semi-floating hybrid system, including a bridge tower 3, a stay cable 4, a stiffening beam 2 and a Two groups of side-span bridge piers at both ends of the stiffening beam 2; each group of side-span bridge piers includes at least one side-span bridge pier 1; a support 5 is provided on the bridge tower 3, and the middle part of the stiffening beam 2 is supported on the support 5; The two ends are respectively supported on two sets of side-span piers, and at least one side-span pier 1 in each set of side-span piers is consolidated with the stiffening beam 2; stay cables 4 are arranged between the bridge tower 3 and the stiffening beam 2, and the oblique Both ends of the stay cable 4 are respectively connected with the bridge tower 3 and the stiffening beam 2 . In the present invention, the side-span pier 1 is consolidated with the stiffening beam 2, and the bridge tower 3 is equipped with a support 5 to support the stiffening beam 2 to form a side-span consolidation-tower girder semi-floating hybrid system. During operation, the side-span pier 1 can bear the stiffening The axial and vertical forces of the beam 2 and the resulting bending moment, and through the flexible restraint of the side-span bridge pier 1 on the stiffened beam 2, effectively improve the mechanical performance and vertical residual creep deformation of the stiffened beam 2 to meet the requirements of railway traffic. Requirements further broaden the scope of application of concrete girder cable-stayed bridges; and at least one side-span pier 1 in each group of side-span piers at both ends of the stiffened beam 2 is consolidated with the stiffened beam 2, which can save the number of bridge supports 5 and reduce Lower project cost and reduce post-corrosion maintenance costs.
具体地,本实施例中的桥塔3包括塔墩32和塔柱31,加劲梁2的两侧均设置有塔柱31,各塔柱31的底部均与塔墩32固结;支座5固定于塔墩32上,加劲梁2支承于支座5上;斜拉索4的顶部与塔柱31的顶部连接,底部与加劲梁2连接;各塔柱31的顶部固结,塔柱31可以是两个,也可以是四个。本实施例中桥塔3与加劲梁2通过支座5连接形成半漂浮体系,桥塔3的个数不限,可根据具体情况设置,并且可以采用多种类型支座5,如纵向活动支座或者固定支座等。优化地,加劲梁2两侧的塔柱31上均设有用于限制加劲梁2沿横桥向移动的限位块33,如图2所示,通过两侧塔柱31上的限位块33限制加劲梁2在横桥向方向上的移动,保证铁路行车的稳定性。Specifically, the bridge tower 3 in this embodiment includes a tower pier 32 and a tower column 31, and both sides of the stiffening beam 2 are provided with a tower column 31, and the bottom of each tower column 31 is consolidated with the tower pier 32; the support 5 Fixed on the tower pier 32, the stiffening beam 2 is supported on the support 5; the top of the stay cable 4 is connected to the top of the tower column 31, and the bottom is connected to the stiffening beam 2; the top of each tower column 31 is consolidated, and the tower column 31 It could be two, it could be four. In this embodiment, bridge towers 3 and stiffening beams 2 are connected through supports 5 to form a semi-floating system. The number of bridge towers 3 is not limited, and can be set according to specific conditions, and various types of supports 5 can be used, such as longitudinal movable supports seat or fixed support etc. Optimally, the pylons 31 on both sides of the stiffening beam 2 are provided with limiting blocks 33 for limiting the movement of the stiffening beam 2 along the transverse direction, as shown in FIG. The movement of the stiffening beam 2 in the direction of the cross bridge is restricted to ensure the stability of the railway running.
具体地,本实施例中桥塔3至少有一个,每个桥塔3横桥向的两侧均通过多对斜拉索4与加劲梁2连接,且每对斜拉索4分别与加劲梁2顺桥向的两侧连接,保证加劲梁2横桥向的两侧受力均匀。进一步地,位于桥塔3横桥向两侧的斜拉索4相对于桥塔3呈对称布置,保证桥塔3横桥向两侧的加劲梁受力均匀;进一步地,如图1所示,位于加劲梁2横桥向同一侧且位于的加劲梁2顺桥向同一侧的斜拉索4与加劲梁2的连接点沿顺桥向方向等距间隔布置;如图2所示,位于加劲梁2横桥向同一侧且位于的加劲梁2顺桥向同一侧的斜拉索4与桥塔3的连接点沿桥塔3的高度方向等距间隔布置。Specifically, in this embodiment, there is at least one bridge tower 3, and each bridge tower 3 is connected to the stiffening beam 2 through multiple pairs of stay cables 4 on both sides of the bridge direction, and each pair of stay cables 4 is connected to the stiffening beam respectively. 2 The two sides along the bridge direction are connected to ensure that the stress on both sides of the stiffening beam 2 across the bridge direction is even. Further, the stay cables 4 located on both sides of the bridge tower 3 are arranged symmetrically with respect to the bridge tower 3 to ensure that the stiffening beams on both sides of the bridge tower 3 are evenly stressed; further, as shown in Figure 1, the The connection points of the stiffening beam 2 on the same side of the transverse bridge and the stiffening beam 2 along the same side of the bridge and the stiffening beam 2 are arranged at equal intervals along the direction of the bridge; as shown in Figure 2, the stiffening beam 2 Stiffening beams located on the same side of the cross bridge 2 along the same side of the bridge The connection points of the stay cables 4 and the bridge tower 3 are arranged equidistantly along the height direction of the bridge tower 3 .
本实施例中,斜拉桥的边跨桥墩组与加劲梁2固结,边跨内桥墩个数不限,并可采用单个桥墩或多个桥墩与加劲梁2固结。优化地,每组边跨桥墩均包括至少两个边跨桥墩1,且边跨桥墩1中,靠近桥塔3的一个边跨桥墩1与加劲梁2固结,背离桥塔3的一个边跨桥墩1上设有支座5,加劲梁2固结支承于边跨桥墩1的支座5上;如图1所示,两组边跨桥墩均包括两个边跨桥墩1,其中靠近桥塔3的一个边跨桥墩1与加劲梁2固结,远离桥塔3的一个边跨桥墩1通过支座支承加劲梁2。进一步地,桥塔3设置于塔墩基础34上,边跨桥墩1设置于边墩基础11上,塔墩基础34和边墩基础11可以是桩基础或者扩大基础等。In this embodiment, the side-span pier groups of the cable-stayed bridge are consolidated with the stiffening girder 2 , and the number of pier inside the side-span is not limited, and a single pier or multiple piers may be consolidated with the stiffening girder 2 . Optimally, each group of side-span piers includes at least two side-span piers 1, and among the side-span piers 1, one side-span pier 1 close to the bridge tower 3 is consolidated with the stiffening beam 2, and one side-span bridge pier away from the bridge tower 3 There is a support 5 on the pier 1, and the stiffening girder 2 is consolidated and supported on the support 5 of the side-span pier 1; as shown in Fig. A side-span pier 1 of 3 is consolidated with the stiffening beam 2, and a side-span pier 1 away from the bridge tower 3 supports the stiffening beam 2 through a support. Further, the bridge tower 3 is arranged on the tower pier foundation 34, and the side-span bridge pier 1 is arranged on the side pier foundation 11, and the tower pier foundation 34 and the side pier foundation 11 can be pile foundations or enlarged foundations.
本实施例的边跨固结-塔梁半漂浮混合体系混凝土梁斜拉桥的构造简洁、新颖美观、方便施工、经济适用,且具有结构刚度大、施工方便、养护费用低等优点,其是能有效改善斜拉桥加劲梁2受力性能和竖向残余徐变变形,满足铁路行车要求,能有效推动混凝土梁斜拉桥在铁路桥梁建设领域的推广和应用。The concrete girder cable-stayed bridge with side-span consolidation-tower girder semi-floating hybrid system in this embodiment is simple in structure, novel and beautiful, convenient for construction, economical and applicable, and has the advantages of high structural rigidity, convenient construction, and low maintenance cost. It can effectively improve the mechanical performance and vertical residual creep deformation of the stiffening girder 2 of the cable-stayed bridge, meet the requirements of railway traffic, and effectively promote the popularization and application of the concrete girder cable-stayed bridge in the field of railway bridge construction.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.
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