CN209114299U - A single box multi-chamber box girder bridge - Google Patents
A single box multi-chamber box girder bridge Download PDFInfo
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Abstract
本实用新型提供了一种单箱多室箱梁桥,包括下部结构、单箱多室箱梁、桥面现浇层、横向预应力钢束、第一纵向预应力钢束和第二纵向预应力钢束,单箱多室箱梁包括两个预制边梁和位于两个预制边梁之间的多个互相连接的预制中梁,工字梁结构的预制边梁和预制中梁能降低吊装施工中对起吊设备的要求和降低了单箱多室箱梁桥的施工成本;第一纵向预应力钢束和第二纵向预应力钢束分别改善预制边梁和预制中梁的中部和下部的受力状态;预制边梁和预制中梁为预制件,具有混凝土质量高、外观美观和重量较轻的特点;第一横向预应力钢束和第二横向预应力钢束能有效加强预制边梁与预制中梁之间的横向联系和相邻的预制中梁之间的横向联系。
The utility model provides a single-box multi-chamber box girder bridge, comprising a substructure, a single-box multi-chamber box girder, a bridge deck cast-in-place layer, a transverse prestressed steel bundle, a first longitudinal prestressed steel bundle and a second longitudinal prestressed steel bundle Stress steel beam, single box multi-chamber box girder includes two prefabricated side beams and a plurality of interconnected prefabricated middle beams located between the two prefabricated side beams, the prefabricated side beams and prefabricated middle beams of the I-beam structure can reduce lifting The requirement for lifting equipment during construction reduces the construction cost of the single-box multi-chamber box girder bridge; the first longitudinal prestressed steel bundle and the second longitudinal prestressed steel bundle improve the middle and lower parts of the prefabricated side beam and the prefabricated middle beam respectively. Stressed state; prefabricated side beams and prefabricated middle beams are prefabricated parts, which have the characteristics of high concrete quality, beautiful appearance and light weight; the first transverse prestressed steel bundle and the second transverse prestressed steel bundle can effectively strengthen the prefabricated side beams The lateral connection with the prefabricated center beam and the lateral connection between the adjacent prefabricated center beams.
Description
技术领域technical field
本实用新型涉及建筑施工工程领域,尤其涉及一种单箱多室箱梁桥。The utility model relates to the field of construction engineering, in particular to a single-box multi-chamber box girder bridge.
背景技术Background technique
箱梁结构因其视觉简洁,梁高比其他型式桥梁较矮,在桥梁建设中具有一定的优势,因此,箱梁桥在公路桥、市政桥和铁路桥梁建设中应用较为广泛,现有技术中箱梁主要分预制箱梁和现浇箱梁,预制箱梁在独立场地预制并结合架桥机或吊装设备在下部工程完成后进行架设,预制箱梁多为单箱单室的小箱梁结构;现浇箱梁为工程现场立模绑扎钢筋并浇筑混凝土,可采用单箱单室箱梁,亦可采用单箱多室箱梁型式。但是现有结构技术中,预制箱梁结构和现浇箱梁结构均存在不同方面的缺点、局限性或不足之处,其具体表现如下:The box girder structure has certain advantages in bridge construction because of its simple vision and shorter beam height than other types of bridges. Therefore, box girder bridges are widely used in the construction of highway bridges, municipal bridges and railway bridges. The box girders are mainly divided into prefabricated box girders and cast-in-place box girders. The prefabricated box girders are prefabricated on an independent site and erected in combination with bridge erecting machines or hoisting equipment after the completion of the lower part of the project. The prefabricated box girders are mostly small box girders with a single box and a single room. ; The cast-in-place box girder is a vertical formwork binding steel bar and pouring concrete on the project site, which can be a single-box single-chamber box girder or a single-box multi-chamber box girder type. However, in the existing structural technology, both the prefabricated box girder structure and the cast-in-place box girder structure have shortcomings, limitations or deficiencies in different aspects, and their specific manifestations are as follows:
A、预制箱梁:A. Prefabricated box girder:
(1)因预制箱梁的施工工艺要求较高且为闭口断面结构,其腹板和下翼缘板的混凝土浇筑质量难以保障,当管理与施工控制不到位时,易出现沿钢束的纵向裂缝或蜂窝麻面。(1) Due to the high construction technology requirements and closed-section structure of prefabricated box girder, the concrete pouring quality of its web and lower flange plate is difficult to guarantee. Cracks or honeycomb pits.
(2)预制小箱梁内空间较狭小,混凝土一次浇注以及内模拆除相对麻烦,箱内混凝土质量不便于检验。(2) The inner space of the prefabricated small box girder is relatively small, the one-time concrete pouring and the removal of the inner mold are relatively troublesome, and the quality of the concrete in the box is not easy to inspect.
(3)相对同等跨径的空心板、T梁而言,预制小箱梁吊装重量较大,如40m 跨径的预制小箱梁吊装重量约达170吨。(3) Compared with the hollow slabs and T beams of the same span, the hoisting weight of the prefabricated small box girder is relatively large. For example, the hoisting weight of the prefabricated small box girder with a span of 40m is about 170 tons.
B、现浇箱梁结构:B. Cast-in-place box girder structure:
(1)由于受钢束张拉空间和单端允许张拉长度的影响,对现浇预应力钢筋混凝土连续箱梁桥而言,其钢束张拉和分段施工问题较难解决,且一直困扰着桥梁工作者。(1) Due to the influence of the tension space of the steel bundle and the allowable tension length of the single end, for the cast-in-place prestressed reinforced concrete continuous box girder bridge, the problem of the tension of the steel bundle and the construction in sections is difficult to solve, and it has always been Troubled bridge workers.
(2)现浇箱梁施工时需搭设满堂支架,当桥梁跨越河涌时支架对河道行洪有不利影响;当桥梁跨越道路时对现状交通有一定限制,特别是在市政工程中,满堂支架施工对交通的影响更大。(2) The cast-in-place box girder needs to be erected with full-chamber supports. When the bridge crosses the river, the support has an adverse effect on the flooding of the river; when the bridge crosses the road, there are certain restrictions on the current traffic, especially in municipal engineering. Construction has a greater impact on traffic.
(3)现浇箱梁施工,需在支架预压完成后,现场立模绑扎钢筋并浇筑混凝土,并需要一定的养护期方能进行预应力张拉,其工期比预制梁较长,在工期紧张的工程中,其施工方案限制了工程进度。(3) In the construction of cast-in-place box girder, it is necessary to bind steel bars and pour concrete on site after the pre-pressing of the support is completed, and a certain maintenance period is required before the pre-stress tensioning can be carried out. The construction period is longer than that of prefabricated beams. In the tense project, its construction plan limited the progress of the project.
实用新型内容Utility model content
基于此,本实用新型的目的在于提供一种单箱多室箱梁桥,以提供一种质量好、强度高、便于组装和施工方便的单箱多室箱梁桥。Based on this, the purpose of the present utility model is to provide a single-box multi-chamber box girder bridge, so as to provide a single-box multi-chamber box girder bridge with good quality, high strength, and easy assembly and construction.
本实用新型的技术方案为:一种单箱多室箱梁桥,其包括下部结构、单箱多室箱梁和桥面现浇层,所述单箱多室箱梁通过永久支座与所述下部结构的顶端连接;The technical scheme of the utility model is as follows: a single-box multi-chamber box girder bridge, which comprises a substructure, a single-box multi-chamber box girder and a bridge deck cast-in-place layer, the single-box multi-chamber box girder is connected to all the bridges through a permanent support. the top connection of the substructure;
所述单箱多室箱梁包括两个预制边梁和多个位于两个所述预制边梁之间的互相连接的预制中梁,相邻的所述预制中梁之间通过横向连接结构连接,每个所述预制边梁的一端分别与其靠近的所述预制中梁的一端通过所述横向连接结构连接;The single box multi-chamber box girder includes two prefabricated side beams and a plurality of interconnected prefabricated middle beams located between the two prefabricated side beams, and the adjacent prefabricated middle beams are connected by a transverse connection structure. , one end of each of the prefabricated side beams is respectively connected with one end of the adjacent prefabricated middle beam through the transverse connection structure;
所述预制边梁和所述预制中梁为工字梁结构,所述预制边梁的中部和底部沿纵向方向的两端分别连接有第一纵向预应力钢束,所述预制中梁的中部和底部沿纵向方向的两端分别连接有第二纵向预应力钢束,所述单箱多室箱梁的顶部和底部沿横向方向的两端分别连接有第一横向预应力钢束和第二横向预应力钢束。The prefabricated side beams and the prefabricated middle beams are I-beam structures, and the two ends of the middle and bottom of the prefabricated side beams along the longitudinal direction are respectively connected with first longitudinal prestressed steel bundles. The two ends along the longitudinal direction of the bottom and the bottom are respectively connected with a second longitudinal prestressed steel bundle, and the two ends of the top and bottom of the single-box multi-chamber box girder along the lateral direction are respectively connected with a first transverse prestressed steel bundle and a second longitudinal prestressed steel bundle. Transverse prestressed tendons.
可选的,所述预制边梁由第一上翼缘板、第一下翼缘板和第一腹板组成工字梁结构,所述第一腹板的顶端和底端分别与所述第一上翼缘板和所述第一下翼缘板连接,所述第一下翼缘板和所述第一腹板沿纵向方向的两端设有第一纵向预应力钢束;Optionally, the prefabricated side beam is composed of a first upper flange plate, a first lower flange plate and a first web to form an I-beam structure, and the top and bottom ends of the first web are respectively connected with the first web. An upper flange plate is connected to the first lower flange plate, and both ends of the first lower flange plate and the first web plate along the longitudinal direction are provided with first longitudinal prestressed steel bundles;
所述预制中梁由第二上翼缘板、第二下翼缘板和第二腹板组成工字梁结构,所述第二腹板的顶端和底端分别与所述第二上翼缘板和所述第二下翼缘板连接,所述第二下翼缘板和所述第二腹板沿纵向方向的两端设有第二纵向预应力钢束;The prefabricated middle beam is composed of a second upper flange plate, a second lower flange plate and a second web to form an I-beam structure, and the top and bottom ends of the second web are respectively connected to the second upper flange. The plate is connected with the second lower flange plate, and the two ends of the second lower flange plate and the second web plate along the longitudinal direction are provided with second longitudinal prestressed steel bundles;
所述第一上翼缘板和所述第二上翼缘板沿横向方向的两端设有第一横向预应力钢束,所述第一下翼缘板和所述第二下翼缘板沿横向方向的两端设有第二横向预应力钢束。Both ends of the first upper flange plate and the second upper flange plate along the lateral direction are provided with first transverse prestressed steel bundles, and the first lower flange plate and the second lower flange plate are provided with first transverse prestressed steel bundles. Both ends along the transverse direction are provided with second transverse prestressed steel bundles.
可选的,当桥梁为直线等宽桥梁时,所述第一上翼缘板沿纵向方向上的宽度设为等宽,所述第一下翼缘板沿纵向方向上的宽度设为等宽;Optionally, when the bridge is a straight-line equal-width bridge, the width of the first upper flange plate along the longitudinal direction is set to the same width, and the width of the first lower flange plate along the longitudinal direction is set to the same width. ;
所述第二上翼缘板沿纵向方向上的宽度设为等宽,所述第二下翼缘板沿纵向方向上的宽度设为等宽。The width of the second upper flange plate along the longitudinal direction is set to be equal width, and the width of the second lower flange plate along the longitudinal direction is set to equal width.
可选的,当桥梁为变宽桥梁时,所述第二上翼缘板沿纵向方向上的宽度设为变宽,所述第二下翼缘板沿纵向方向上的宽度设为变宽。Optionally, when the bridge is a widened bridge, the width of the second upper flange plate in the longitudinal direction is set to be widened, and the width of the second lower flange plate in the longitudinal direction is set to be widened.
可选的,当所述桥梁为具有一定曲率半径的曲线桥梁时,所述第一上翼缘板的外侧翼缘为弧线形。Optionally, when the bridge is a curved bridge with a certain radius of curvature, the outer flange of the first upper flange plate is arc-shaped.
可选的,所述第一下翼缘板包括第一端和与所述第一端相对设置的第二端,所述第一端呈马蹄形。Optionally, the first lower flange plate includes a first end and a second end opposite to the first end, and the first end is in a horseshoe shape.
可选的,所述第一端向外延伸20~50cm。Optionally, the first end extends outward by 20-50 cm.
可选的,所述横向连接结构为湿接缝,所述第一上翼缘板和与所述第一上翼缘板相邻的所述第二上翼缘板通过所述湿接缝连接,所述第一下翼缘板和与所述第一下翼缘板相邻的所述第二下翼缘板通过所述湿接缝连接,相邻的所述第二上翼缘板之间通过所述湿接缝连接,相邻的所述第二下翼缘板之间通过所述湿接缝连接。Optionally, the transverse connection structure is a wet seam, and the first upper flange plate and the second upper flange plate adjacent to the first upper flange plate are connected by the wet seam , the first lower flange plate and the second lower flange plate adjacent to the first lower flange plate are connected by the wet seam, and the adjacent second upper flange plates are connected are connected by the wet seam, and the adjacent second lower flange plates are connected by the wet seam.
为了达到相同的目的,本实用新型还提供一种单箱多室箱梁桥的施工方法,In order to achieve the same purpose, the utility model also provides a construction method of a single-box multi-chamber box girder bridge,
当桥梁设计为多跨简支梁桥时,包括以下步骤:When the bridge is designed as a multi-span simply supported girder bridge, the following steps are involved:
S1、在工程场地进行桩基、承台、桥墩和盖梁的施工,同时在预制场中进行所述预制边梁和预制中梁的制作;S1. Carry out the construction of pile foundations, caps, bridge piers and cover beams in the engineering site, and simultaneously carry out the production of the prefabricated side beams and the prefabricated middle beams in the prefabrication yard;
S2、在盖梁上安装多个与所述预制边梁和所述预制中梁相对应的临时支座,并且在所述临时支座的两侧安装临时支撑;S2. Install a plurality of temporary supports corresponding to the prefabricated side beams and the prefabricated middle beams on the cover beam, and install temporary supports on both sides of the temporary supports;
S3、将所述预制边梁和所述预制中梁吊装至所述临时支座和所述临时支撑上;S3, hoisting the prefabricated side beam and the prefabricated middle beam to the temporary support and the temporary support;
S4、施工所述横向连接结构,并且同时安装所述永久支座;S4, constructing the lateral connection structure, and simultaneously installing the permanent support;
S5、所述第一横向预应力钢束穿入所述第一上翼缘板和所述第二下翼缘板,所述第二横向预应力钢束穿入所述第一下翼缘板和所述第二下翼缘板,并且对所述第一横向预应力钢束和所述第二横向预应力钢束进行张拉,接着拆除所述临时支撑;S5. The first transverse prestressed steel bundle penetrates into the first upper flange plate and the second lower flange plate, and the second transverse prestressed steel bundle penetrates into the first lower flange plate and the second lower flange plate, and the first transverse prestressed steel bundle and the second transverse prestressed steel bundle are tensioned, and then the temporary support is removed;
S6、浇注桥面现浇层混凝土,从而在所述预制边梁和所述预制中梁顶端形成所述桥面现浇层;S6, pouring the bridge deck cast-in-situ layer concrete, thereby forming the bridge deck cast-in-place layer at the top of the prefabricated side beam and the prefabricated middle beam;
S7、拆除所述临时支座;S7, remove the temporary support;
S8、施工桥面铺装及附属设施;S8. Construction of bridge deck pavement and ancillary facilities;
S9、运营通车;S9. Operation and opening to traffic;
当桥梁设计为连续梁结构时,包括以下步骤:When a bridge is designed as a continuous beam structure, the following steps are involved:
S1、在工程场地进行桩基、承台、桥墩和盖梁的施工,同时在预制场中进行所述预制边梁和预制中梁的制作,其中,在所述第一上翼缘板和所述第二上翼缘板安装负弯矩波纹管;S1. Carry out the construction of pile foundations, caps, bridge piers and cover beams in the engineering site, and simultaneously carry out the production of the prefabricated side beams and the prefabricated middle beams in the prefabrication yard, wherein, in the first upper flange plate and all the The second upper flange plate is installed with a negative bending moment bellows;
S2、在盖梁上安装多个与所述预制边梁和所述预制中梁相对应的临时支座,并且在临时支座的两侧安装临时支撑;S2. Install a plurality of temporary supports corresponding to the prefabricated side beams and the prefabricated middle beams on the cover beam, and install temporary supports on both sides of the temporary supports;
S3、将所述预制边梁和所述预制中梁吊装至所述临时支座和所述临时支撑上;S3, hoisting the prefabricated side beam and the prefabricated middle beam to the temporary support and the temporary support;
S4、施工所述横向连接结构,并且同时安装所述永久支座;S4, constructing the lateral connection structure, and simultaneously installing the permanent support;
S5、所述第一横向预应力钢束穿入所述第一上翼缘板和所述第二下翼缘板,所述第二横向预应力钢束穿入所述第一下翼缘板和所述第二下翼缘板,并且对所述第一横向预应力钢束和所述第二横向预应力钢束进行张拉,接着拆除所述临时支撑;S5. The first transverse prestressed steel bundle penetrates into the first upper flange plate and the second lower flange plate, and the second transverse prestressed steel bundle penetrates into the first lower flange plate and the second lower flange plate, and the first transverse prestressed steel bundle and the second transverse prestressed steel bundle are tensioned, and then the temporary support is removed;
S6、浇注相邻两跨之间的墩顶现浇连续段混凝土,从而完成体系转换;S6. Pouring the continuous section concrete on the top of the pier between two adjacent spans to complete the system conversion;
S7、将负弯矩钢束穿入所述负弯矩波纹管中,并且对所述负弯矩钢束进行张拉;S7, penetrating the negative bending moment steel bundle into the negative bending moment bellows, and tensioning the negative bending moment steel bundle;
S8、浇注桥面现浇层混凝土,从而在所述预制边梁和所述预制中梁顶端形成所述桥面现浇层;S8, pouring the bridge deck cast-in-situ layer concrete, thereby forming the bridge deck cast-in-place layer at the top of the prefabricated side beams and the prefabricated middle beam;
S9、拆除所述临时支座;S9, remove the temporary support;
S10、施工桥面铺装及附属设施;S10. Construction of bridge deck pavement and ancillary facilities;
S101、运营通车。S101. Operation and opening to traffic.
可选的,当桥梁设计为多跨简支梁桥时,所述步骤S1中,包括以下步骤:Optionally, when the bridge is designed as a multi-span simply supported girder bridge, the step S1 includes the following steps:
S11、根据桥梁跨径、荷载等级和桥梁宽度等设计参数进行桥梁结构计算分析,确定每个所述单箱多室箱梁的结构尺寸,进而确定预制中梁和预制边梁的结构尺寸,以及确定所述预应力钢束的布置;S11. Calculate and analyze the bridge structure according to design parameters such as bridge span, load level, and bridge width, determine the structural dimensions of each of the single-box multi-chamber box girder, and then determine the structural dimensions of the prefabricated middle beam and the prefabricated side beam, and determining the arrangement of the prestressed tendons;
S12、建设预制场和台座;S12. Construction of prefabricated fields and pedestals;
S13、在所述台座上进行所述预制边梁底模和所述预制中梁底模的安装和铺设;S13, performing the installation and laying of the prefabricated side beam bottom form and the prefabricated middle beam bottom form on the pedestal;
S14、在所述预制边梁底模和所述预制中梁底模上分别绑扎组成所述预制边梁的钢筋骨架和所述预制中梁的钢筋骨架,并且在组成所述预制边梁的钢筋骨架和所述预制中梁的钢筋骨架中预埋横向连接结构;S14. Bind the steel skeleton of the prefabricated side beam and the steel skeleton of the prefabricated middle beam respectively on the prefabricated side beam bottom form and the prefabricated middle beam bottom form, and bind the steel bars composing the prefabricated side beam on the precast side beam bottom form. The skeleton and the prefabricated transverse connection structure in the steel skeleton of the prefabricated middle beam;
S15、在组成所述预制边梁的钢筋骨架和所述预制中梁的钢筋骨架中安装纵向波纹管和横向波纹管,其中,在所述预制边梁的钢筋骨架中安装第一横向波纹管,在所述预制中梁的钢筋骨架中安装第二横向波纹管;S15, install longitudinal corrugated pipes and transverse corrugated pipes in the reinforced skeleton of the prefabricated side beams and the reinforced skeleton of the prefabricated middle beams, wherein a first transverse corrugated pipe is installed in the reinforced skeleton of the prefabricated side beams, installing a second transverse corrugated pipe in the steel skeleton of the prefabricated middle beam;
S16、在所述台座上进行预制边梁侧模、预制边梁端模、预制中梁侧模和预制中梁端模的安装;S16, performing the installation of the prefabricated side beam side formwork, the prefabricated side beam end formwork, the prefabricated middle beam side formwork and the prefabricated middle beam end formwork on the pedestal;
S17、向所述预制边梁侧模、所述预制边梁端模和所述预制边梁底模形成的第一浇注槽内的钢筋骨架中浇注混凝土;向所述预制中梁侧模、所述预制中梁端模和所述预制中梁底模形成的第二浇注槽内的钢筋骨架中浇注混凝土;最后检查各个所述横向连接结构的位置;S17, pour concrete into the steel skeleton in the first pouring groove formed by the prefabricated side beam side form, the prefabricated side beam end form and the prefabricated side beam bottom form; Concrete is poured into the steel skeleton in the second pouring groove formed by the middle beam end form and the prefabricated middle beam bottom form; finally, the position of each of the transverse connection structures is checked;
S18、浇注完成后的所述预制边梁和所述预制中梁进行养护,养护时间大于7天后,且组成所述预制边梁的混凝土和所述预制中梁的混凝土的强度和弹性模型达到设计值的85%后,拆除所述预制边梁侧模、所述预制边梁端模、所述预制中梁侧模和所述预制中梁端模;S18, the prefabricated side beams and the prefabricated middle beams after the pouring are completed, and the curing time is greater than 7 days, and the strength and elasticity models of the concrete constituting the prefabricated side beams and the concrete of the prefabricated middle beams reach the design After 85% of the value, remove the prefabricated side beam side form, the prefabricated side beam end form, the prefabricated middle beam side form and the prefabricated middle beam end form;
S19、将所述第一纵向预应力钢束穿入设于所述预制边梁的纵向波纹管,将所述第二纵向预应力钢束穿入所述预制中梁的纵向波纹管,待所述第一纵向预应力钢束和所述第二纵向预应力钢束穿束完成后,对所述第一纵向预应力钢束和所述第二纵向预应力钢束进行张拉;S19. Insert the first longitudinal prestressed steel bundle into the longitudinal bellows provided in the prefabricated side beam, insert the second longitudinal prestressed steel bundle into the longitudinal bellows of the prefabricated middle beam, and wait until the After the first longitudinal prestressed steel bundle and the second longitudinal prestressed steel bundle are passed through, the first longitudinal prestressed steel bundle and the second longitudinal prestressed steel bundle are stretched;
S110、进行孔道压浆和封锚养护;S110. Carry out grouting and anchor sealing maintenance;
当桥梁设计为连续梁桥时,所述步骤S1中,包括以下步骤:When the bridge is designed as a continuous girder bridge, the step S1 includes the following steps:
S11、根据桥梁跨径、荷载等级和桥梁宽度等设计参数进行桥梁结构计算分析,确定每个所述单箱多室箱梁的结构尺寸,进而确定预制中梁和预制边梁的结构尺寸,以及确定所述预应力钢束的布置;S11. Calculate and analyze the bridge structure according to design parameters such as bridge span, load level, and bridge width, determine the structural dimensions of each of the single-box multi-chamber box girder, and then determine the structural dimensions of the prefabricated middle beam and the prefabricated side beam, and determining the arrangement of the prestressed tendons;
S12、建设预制场和台座;S12. Construction of prefabricated fields and pedestals;
S13、在所述台座上进行所述预制边梁底模和所述预制中梁底模的安装和铺设;S13, performing the installation and laying of the prefabricated side beam bottom form and the prefabricated middle beam bottom form on the pedestal;
S14、在所述预制边梁底模和所述预制中梁底模上分别绑扎组成所述预制边梁的钢筋骨架和所述预制中梁的钢筋骨架,并且在组成所述预制边梁的钢筋骨架和所述预制中梁的钢筋骨架中预埋横向连接结构;S14. Bind the steel skeleton of the prefabricated side beam and the steel skeleton of the prefabricated middle beam respectively on the prefabricated side beam bottom form and the prefabricated middle beam bottom form, and bind the steel bars composing the prefabricated side beam on the precast side beam bottom form. The skeleton and the prefabricated transverse connection structure in the steel skeleton of the prefabricated middle beam;
S15、在组成所述预制边梁的钢筋骨架和所述预制中梁的钢筋骨架安装纵向波纹管、横向波纹管和负弯矩钢束波纹管,其中,在所述预制边梁的钢筋骨架中安装第一横向波纹管,在所述预制中梁的钢筋骨架中安装第二横向波纹管;S15. Install longitudinal corrugated pipes, transverse corrugated pipes and negative bending moment steel bundle corrugated pipes on the steel skeleton of the prefabricated side beam and the steel skeleton of the prefabricated middle beam, wherein, in the steel skeleton of the prefabricated side beam installing a first transverse corrugated pipe, and installing a second transverse corrugated pipe in the steel skeleton of the prefabricated middle beam;
S16、在所述台座上进行所述预制边梁侧模、所述预制边梁端模、所述预制中梁侧模和所述预制中梁端模的安装;S16, performing the installation of the prefabricated side beam side molds, the prefabricated side beam end molds, the prefabricated middle beam side molds and the prefabricated middle beam end molds on the pedestal;
S17、向所述预制边梁侧模、所述预制边梁端模和所述预制边梁底模形成的第一浇注槽内的钢筋骨架中浇注混凝土;向所述预制中梁侧模、所述预制中梁端模和所述预制中梁底模形成的第二浇注槽内的钢筋骨架中浇注混凝土;最后检查各个所述横向连接结构的位置;S17, pour concrete into the steel skeleton in the first pouring groove formed by the prefabricated side beam side form, the prefabricated side beam end form and the prefabricated side beam bottom form; Concrete is poured into the steel skeleton in the second pouring groove formed by the middle beam end form and the prefabricated middle beam bottom form; finally, the position of each of the transverse connection structures is checked;
S18、浇注完成后的所述预制边梁和所述预制中梁进行养护,养护时间大于 7天后,且组成所述预制边梁的混凝土和所述预制中梁的混凝土的强度和弹性模型达到设计值的85%后,拆除所述预制边梁侧模、所述预制边梁端模、所述预制中梁侧模和所述预制中梁端模;S18, the prefabricated side beams and the prefabricated middle beams after the pouring are completed, and the curing time is greater than 7 days, and the strength and elasticity models of the concrete constituting the prefabricated side beams and the concrete of the prefabricated middle beams reach the design After 85% of the value, remove the prefabricated side beam side form, the prefabricated side beam end form, the prefabricated middle beam side form and the prefabricated middle beam end form;
S19、将所述第一纵向预应力钢束穿入所述预制边梁的纵向波纹管,将所述第二纵向预应力钢束穿入所述预制中梁的纵向波纹管,待所述第一纵向预应力钢束和所述第二纵向预应力钢束穿束完成后,对所述第一纵向预应力钢束和所述第二纵向预应力钢束进行张拉;S19. Insert the first longitudinal prestressed steel bundle into the longitudinal bellows of the prefabricated side beam, and insert the second longitudinal prestressed steel bundle into the longitudinal bellows of the prefabricated middle beam. After a longitudinal prestressed steel bundle and the second longitudinal prestressed steel bundle are passed through, tensioning the first longitudinal prestressed steel bundle and the second longitudinal prestressed steel bundle;
S110、进行孔道压浆和封锚养护。S110. Carry out grouting and anchor sealing maintenance.
实施本实用新型实施例,具有如下有益效果:Implementing the embodiment of the present utility model has the following beneficial effects:
本实用新型的单箱多室箱梁桥,具有如下优点:The single box multi-chamber box girder bridge of the utility model has the following advantages:
(1)本实用新型的单箱多室箱梁包括两个预制边梁和多个互相连接的预制中梁,预制边梁和预制中梁为预制件,具有混凝土质量高、外观美观和重量较轻的特点,在单箱多室箱梁与桥墩的施工过程中,整个施工过程具有环保的特点;(1) The single-box multi-chamber box girder of the present utility model comprises two prefabricated side beams and a plurality of interconnected prefabricated middle beams. The prefabricated side beams and the prefabricated middle beams are prefabricated parts, and have the advantages of high concrete quality, beautiful appearance and relatively heavy weight. The characteristics of light weight, in the construction process of single box multi-chamber box girder and bridge pier, the whole construction process has the characteristics of environmental protection;
(2)本实用新型的预制边梁和预制中梁为工字梁结构,在对预制边梁和预制中梁的制作过程中,不用安装和拆除内模,整个预制过程具有便于施工和检验浇注完成后的混凝土的质量的特点;(2) The prefabricated side beams and the prefabricated middle beams of the present utility model are I-beam structures, and in the production process of the prefabricated side beams and the prefabricated middle beams, there is no need to install and remove the inner mold, and the whole prefabrication process has the advantages of convenient construction and inspection and pouring Characteristics of the quality of the finished concrete;
(3)本实用新型的预制边梁和预制中梁为工字梁结构,相较于同等跨径和梁宽的预制件中,预制边梁和预制中梁的重量更轻,从而降低吊装施工中对起吊设备的要求和降低了单箱多室箱梁桥的施工成本;(3) The prefabricated side beams and the prefabricated middle beams of the present invention are I-beam structures, and compared with the prefabricated parts of the same span and beam width, the prefabricated side beams and the prefabricated middle beams are lighter in weight, thereby reducing the hoisting construction. The requirements for lifting equipment in China and the construction cost of single-box multi-chamber box girder bridges are reduced;
(4)本实用新型的第一纵向预应力钢束能对预制边梁施加纵向压力,从而有效改善预制边梁的中部和下部的受力状态,第二纵向预应力钢束能对预制中梁施加纵向压力,从而有效改善预制中梁的中部和下部的受力状态;(4) The first longitudinal prestressed steel bundle of the present utility model can apply longitudinal pressure to the prefabricated side beams, thereby effectively improving the stress state of the middle and lower parts of the prefabricated side beams, and the second longitudinal prestressed steel bundles can apply longitudinal pressure to the prefabricated middle beams. Apply longitudinal pressure to effectively improve the stress state of the middle and lower parts of the prefabricated middle beam;
(5)本实用新型的第一横向预应力钢束和第二横向预应力钢束不仅能有效加强预制边梁与预制中梁之间的横向联系和相邻的预制中梁之间的横向联系,而且能有效改善预制边梁的外缘的受力状态。(5) The first transverse prestressed steel bundle and the second transverse prestressed steel bundle of the present invention can not only effectively strengthen the lateral connection between the prefabricated side beam and the prefabricated middle beam and the lateral connection between the adjacent prefabricated middle beams , and can effectively improve the stress state of the outer edge of the prefabricated side beam.
本实用新型的单箱多室箱梁桥的施工方法,具有如下特点:The construction method of the single-box multi-chamber box girder bridge of the present invention has the following characteristics:
(1)本实用新型的单箱多室箱梁桥采用的施工方法为预制吊装施工,预制边梁和预制中梁先在预制场中制作好,且预制边梁和预制中梁采用的是标准化、工厂化和快速化的大批量方式进行生产施工,因此,本实用新型的施工方法不仅可以加快施工进度,而且避免大规模满堂支架和模板的安装与拆卸,更进一步的是,能很好的改善施工环境,降低对施工现场周边环境的影响,具有很好的社会经济效益;(1) the construction method that the single-box multi-chamber box girder bridge of the present utility model adopts is the prefabricated hoisting construction, the prefabricated side beams and the prefabricated middle beams are first made in the prefabricated field, and what the prefabricated side beams and the prefabricated middle beams adopt are standardized Therefore, the construction method of the utility model can not only speed up the construction progress, but also avoid the installation and disassembly of large-scale full-house brackets and formwork, and further, can be very good. Improve the construction environment and reduce the impact on the surrounding environment of the construction site, which has good social and economic benefits;
(2)本实用新型的单箱多室箱梁桥的施工方法不仅适用于桥梁结构为多跨简支梁结构,而且还适用于桥梁结构为连续梁结构,具有使用范围广的特点;(2) The construction method of the single-box multi-chamber box girder bridge of the present invention is not only applicable to the bridge structure being a multi-span simply supported beam structure, but also applicable to the bridge structure being a continuous beam structure, and has the characteristics of a wide range of use;
(3)本实用新型的单箱多室箱梁桥的施工方法能确保单箱多室箱梁桥安装的稳定性、安全性和便利性,从而能进一步确保整个单箱多室箱梁桥结构的安装到位,且方法简单可行,具有很好的推广价值。(3) The construction method of the single-box multi-chamber box girder bridge of the present invention can ensure the stability, safety and convenience of the installation of the single-box multi-chamber box girder bridge, thereby further ensuring the entire single-box multi-chamber box girder bridge structure. The installation is in place, and the method is simple and feasible, and has good promotion value.
附图说明Description of drawings
图1是本实用新型的单箱多室箱梁桥的结构示意图。FIG. 1 is a schematic structural diagram of a single-box multi-chamber box girder bridge of the present invention.
图2是本实用新型的预制边梁的结构示意图。FIG. 2 is a schematic structural diagram of the prefabricated side beam of the present invention.
图3是本实用新型的预制中梁的结构示意图。3 is a schematic structural diagram of the prefabricated middle beam of the present invention.
图4是本实用新型的单箱多室箱梁的结构示意图。4 is a schematic structural diagram of a single box multi-chamber box girder of the present invention.
图5是本实用新型的单箱多室箱梁在跨中处的断面结构示意图。5 is a schematic cross-sectional structure diagram of the single-box multi-chamber box girder of the present invention at the mid-span.
图6是本实用新型的桥梁结构为连续梁结构情况下的单箱多室箱梁在墩顶处的断面结构示意图。6 is a schematic cross-sectional structure diagram of a single-box multi-chamber box girder at the top of a pier under the condition that the bridge structure of the present invention is a continuous girder structure.
图7是本实用新型的单箱多室箱梁桥施工方法步骤S1~S3所对应的单箱多室箱梁桥的结构示意图。7 is a schematic structural diagram of a single-box multi-chamber box girder bridge corresponding to steps S1 to S3 of the single-box multi-chamber box girder bridge construction method of the present invention.
图8是本实用新型的桥梁为连续梁结构情况下的单箱多室箱梁桥的施工方法步骤S1~S6所对应的单箱多室箱梁桥的结构示意图。8 is a schematic structural diagram of the single-box multi-chamber box girder bridge corresponding to steps S1 to S6 of the construction method of the single-box multi-chamber box girder bridge under the condition that the bridge of the present invention is a continuous girder structure.
图9是本实用新型的桥梁为连续梁结构情况下的单箱多室箱梁桥的施工方法步骤S1~S10所对应的单箱多室箱梁桥的结构示意图。9 is a schematic structural diagram of the single-box multi-chamber box girder bridge corresponding to steps S1 to S10 of the construction method of the single-box multi-chamber box girder bridge under the condition that the bridge of the present invention is a continuous girder structure.
图10是本实用新型的桥梁结构为多跨简支梁情况下的单箱多室箱梁桥的施工方法步骤图。10 is a step diagram of the construction method of the single-box multi-chamber box girder bridge under the condition that the bridge structure of the present invention is a multi-span simply supported girder.
图11是本实用新型的桥梁结构为连续梁情况下的单箱多室箱梁桥的施工方法步骤图。11 is a step diagram of the construction method of the single-box multi-chamber box-girder bridge under the condition that the bridge structure of the present invention is a continuous beam.
图12是本实用新型的桥梁结构为多跨简支梁情况下的预制边梁和预制中梁的施工方法步骤图。12 is a step diagram of the construction method of the prefabricated side beam and the prefabricated middle beam under the condition that the bridge structure of the present invention is a multi-span simply supported beam.
图13是本实用新型的桥梁结构为连续梁情况下的预制边梁和预制中梁的施工方法步骤图。13 is a step diagram of the construction method of the prefabricated side beam and the prefabricated middle beam under the condition that the bridge structure of the present invention is a continuous beam.
附图标记说明:Description of reference numbers:
1、桩基;2、承台;3、桥墩;4、单箱多室箱梁;41、预制边梁;411、第一上翼缘板;412、第一腹板;413、第一下翼缘板;4131、第一端;4132、第二端;42、预制中梁;421、第二上翼缘板;422、第二腹板;423、第二下翼缘板;43、横向连接结构;44、第一纵向预应力钢束;45、第二纵向预应力钢束; 46、第一横向预应力钢束;47、第二横向预应力钢束;5、桥面现浇层;6、临时支座;7、永久支座;8、负弯矩钢束;9、现浇连续段。1. Pile foundation; 2. Cap; 3. Bridge pier; 4. Single-box multi-chamber box girder; 41. Prefabricated side beam; 411. The first upper flange plate; Flange plate; 4131, first end; 4132, second end; 42, prefabricated middle beam; 421, second upper flange plate; 422, second web plate; 423, second lower flange plate; 43, transverse Connection structure; 44, the first longitudinal prestressed steel bundle; 45, the second longitudinal prestressed steel bundle; 46, the first transverse prestressed steel bundle; 47, the second transverse prestressed steel bundle; 5, the bridge deck cast-in-place layer ; 6. Temporary support; 7. Permanent support; 8. Negative bending moment steel beam; 9. Cast-in-place continuous section.
具体实施方式Detailed ways
下面将结合本实用新型实施例中的附图,对本实用新型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实用新型一部分实施例,而不是全部的实施例。基于本实用新型中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本实用新型保护的范围。The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
在本实用新型的描述中,需要理解的是,术语“上”、“下”、“左”、“右”、“顶”、“底”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实用新型和简化描述,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实用新型的限制。In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a reference to the present utility model. limits.
如图1~9所示,本实用新型实施例所提供的一种单箱多室箱梁桥,其包括下部结构、多个单箱多室箱梁4和桥面现浇层5,下部结构包括桩基1、承台2、桥墩3、盖梁,桩基1与承台2的底端连接,承台2的顶端与桥墩3的底端连接,桥墩3的顶端与盖梁的底端连接,单箱多室箱梁4通过永久支座7与盖梁的顶端连接;As shown in Figures 1 to 9, a single-box multi-chamber box girder bridge provided by the embodiment of the present invention includes a substructure, a plurality of single-box multi-chamber box girder 4 and a bridge deck cast-in-place layer 5. The substructure It includes pile foundation 1, cap 2, bridge pier 3 and cover beam. Pile foundation 1 is connected to the bottom end of cap 2, the top end of cap 2 is connected to the bottom end of bridge pier 3, and the top end of bridge pier 3 is connected to the bottom end of the cap beam. Connection, the single box multi-chamber box beam 4 is connected with the top of the cover beam through the permanent support 7;
单箱多室箱梁4包括两个预制边梁41和多个位于两个预制边梁41之间的互相连接的预制中梁42,相邻的预制中梁42之间通过横向连接结构43连接,每个预制边梁41的一端分别与其靠近的预制中梁42的一端通过横向连接结构连接;The single box multi-chamber box girder 4 includes two prefabricated side beams 41 and a plurality of interconnected prefabricated middle beams 42 located between the two prefabricated side beams 41 , and the adjacent prefabricated middle beams 42 are connected by a transverse connecting structure 43 , one end of each prefabricated side beam 41 is respectively connected with one end of the adjacent prefabricated middle beam 42 through a transverse connection structure;
预制边梁41和预制中梁42为工字梁结构,预制边梁41的中部和底部沿纵向方向的两端连接有第一纵向预应力钢束44,预制中梁42的中部和底部沿纵向方向的两端连接有第二纵向预应力钢束45,单箱多室箱梁4的顶部和底部沿横向方向的两端分别连接有第一横向预应力钢束46和第二横向预应力钢束47。The prefabricated side beam 41 and the prefabricated middle beam 42 are I-beam structures, the middle and bottom of the prefabricated side beam 41 are connected with first longitudinal prestressed steel bundles 44 at both ends along the longitudinal direction, and the middle and bottom of the prefabricated middle beam 42 are longitudinally connected. Both ends of the direction are connected with a second longitudinal prestressed steel bundle 45, and the top and bottom of the single box multi-chamber box girder 4 are connected with a first transverse prestressed steel bundle 46 and a second transverse prestressed steel respectively at both ends along the transverse direction. Bundle 47.
基于上述设置,本实用新型的单箱多室箱梁桥,具有如下优点:Based on the above settings, the single-box multi-chamber box girder bridge of the present invention has the following advantages:
(1)本实用新型的单箱多室箱梁4包括两个预制边梁41和多个互相连接的预制中梁42,预制边梁41和预制中梁42为预制件,具有混凝土质量高、外观美观和重量较轻的特点,在单箱多室箱梁4与桥墩3的施工过程中,整个施工过程具有环保的特点;(1) The single box multi-chamber box girder 4 of the present invention includes two prefabricated side beams 41 and a plurality of interconnected prefabricated middle beams 42. The prefabricated side beams 41 and the prefabricated middle beams 42 are prefabricated parts, and have high concrete quality, With the features of beautiful appearance and light weight, in the construction process of the single box multi-chamber box girder 4 and the bridge pier 3, the whole construction process has the characteristics of environmental protection;
(2)本实用新型的预制边梁41和预制中梁42为工字梁结构,在对预制边梁41和预制中梁42的制作过程中,不用安装和拆除内模,整个预制过程具有便于施工和检验浇注完成后的混凝土的质量的特点;(2) The prefabricated side beams 41 and the prefabricated middle beams 42 of the present invention are of I-beam structures, and in the production process of the prefabricated side beams 41 and the prefabricated middle beams 42, there is no need to install and remove the inner mold, and the entire prefabrication process has the advantages of convenient Characteristics of construction and inspection of the quality of the finished concrete;
(3)本实用新型的预制边梁41和预制中梁42为工字梁结构,相较于同等跨径和梁宽的预制件中,预制边梁41和预制中梁42的重量更轻,从而降低吊装施工中对起吊设备的要求和降低了单箱多室箱梁桥的施工成本;(3) The prefabricated side beams 41 and the prefabricated middle beams 42 of the present utility model are I-beam structures, and compared with the prefabricated parts of the same span and beam width, the prefabricated side beams 41 and the prefabricated middle beams 42 are lighter in weight, Therefore, the requirements for lifting equipment in the hoisting construction and the construction cost of the single-box multi-chamber box girder bridge are reduced;
(4)本实用新型的第一纵向预应力钢束44能对预制边梁41施加纵向压力,从而有效改善预制边梁41的中部和下部的受力状态,第二纵向预应力钢束45 能对预制中梁42施加纵向压力,从而有效改善预制中梁42的中部和下部的受力状态;(4) The first longitudinal prestressed steel bundle 44 of the present invention can apply longitudinal pressure to the prefabricated side beam 41, thereby effectively improving the stress state of the middle and lower parts of the prefabricated side beam 41, and the second longitudinal prestressed steel bundle 45 can Apply longitudinal pressure to the prefabricated middle beam 42, thereby effectively improving the stress state of the middle and lower parts of the prefabricated middle beam 42;
(5)本实用新型的第一横向预应力钢束46和第二横向预应力钢束47不仅能有效加强预制边梁41与预制中梁42之间的横向联系和相邻的预制中梁42之间的横向联系,而且能有效改善预制边梁41的外缘的受力状态。(5) The first transverse prestressed steel bundles 46 and the second transverse prestressed steel bundles 47 of the present invention can not only effectively strengthen the lateral connection between the prefabricated side beams 41 and the prefabricated middle beams 42 and the adjacent prefabricated middle beams 42 The lateral connection between them can be effectively improved, and the stress state of the outer edge of the prefabricated side beam 41 can be effectively improved.
本实施例中,如图1~9所示,为了进一步改善预制边梁41的中部和下部的受力状态和预制中梁42的中部和下部的受力状态,预制边梁41由第一上翼缘板411、第一下翼缘板413和第一腹板412组成工字梁结构,第一腹板412的顶端和底端分别与第一上翼缘板411和第一下翼缘板413连接,且第一下翼缘板 413和第一腹板412沿纵向方向设有用于连接第一纵向预应力钢束44的第一纵向波纹管,第一纵向预应力钢束44插入第一纵向波纹管中,从而第一下翼缘板 413和第一腹板412沿纵向方向的两端设有第一纵向预应力钢束44;In this embodiment, as shown in FIGS. 1 to 9 , in order to further improve the stress state of the middle and lower parts of the prefabricated side beam 41 and the stress state of the middle and lower parts of the prefabricated middle beam 42 , the prefabricated side beam 41 is formed by the first upper The flange plate 411, the first lower flange plate 413 and the first web plate 412 form an I-beam structure, and the top and bottom ends of the first web plate 412 are connected to the first upper flange plate 411 and the first lower flange plate respectively. 413 is connected, and the first lower flange plate 413 and the first web 412 are provided with a first longitudinal bellows in the longitudinal direction for connecting the first longitudinal prestressed steel bundle 44, and the first longitudinal prestressed steel bundle 44 is inserted into the first longitudinal bellows. In the longitudinal corrugated pipe, the two ends of the first lower flange plate 413 and the first web plate 412 along the longitudinal direction are provided with first longitudinal prestressed steel bundles 44;
预制中梁42由第二上翼缘板421、第二下翼缘板423和第二腹板422组成工字梁结构,第二腹板422的顶端和底端分别与第二上翼缘板421和第二下翼缘板423连接,第二下翼缘板423和第二腹板422沿纵向方向上设有用于连接第二纵向预应力钢束45的第二纵向波纹管,第二纵向预应力钢束45插入第二纵向波纹管中,从而第二下翼缘板423和第二腹板422沿纵向方向的两端设有第二纵向预应力钢束45;The prefabricated middle beam 42 is composed of a second upper flange plate 421, a second lower flange plate 423 and a second web 422 to form an I-beam structure. The top and bottom ends of the second web 422 are respectively connected to the second upper flange plate. 421 is connected with the second lower flange plate 423. The second lower flange plate 423 and the second web plate 422 are provided with a second longitudinal corrugated pipe for connecting the second longitudinal prestressed steel bundle 45 in the longitudinal direction. The prestressed steel bundles 45 are inserted into the second longitudinal bellows, so that both ends of the second lower flange plate 423 and the second web 422 along the longitudinal direction are provided with the second longitudinal prestressed steel bundles 45;
第一上翼缘板411和第二上翼缘板421沿横向方向的两端设有第一横向预应力钢束46,第一下翼缘板411和第二下翼缘板421沿横向方向的两端设有第二横向预应力钢束47。具体的,第一纵向预应力钢束44穿出位于第一纵向波纹管的纵向应力波纹管的端部,且通过锚固装置锚固在第一下翼缘板413沿纵向方向的两端面处和第一腹板412沿纵向方向的两端面处;第二纵向预应力钢束 45穿出位于第二纵向波纹管的纵向预应力波纹管的端部,且通过锚固装置锚固在第二下翼缘板423沿纵向方向的两端面处和第二腹板422沿纵向方向的两端面处;第一横向预应力钢束46穿出位于第一横向波纹管的横向应力波纹管的端部,且通过锚固装置锚固在两个第一上翼缘板411沿横向方向的两最外端面处;第二横向预应力钢束47穿出位于第二横向波纹管的横向应力波纹管的端部,且通过锚固装置锚固在两个第一下翼缘板413沿横向方向的最外端面处;Both ends of the first upper flange plate 411 and the second upper flange plate 421 in the lateral direction are provided with first transverse prestressed steel bundles 46, and the first lower flange plate 411 and the second lower flange plate 421 are arranged in the lateral direction There are second transverse prestressed steel bundles 47 at both ends of the . Specifically, the first longitudinal prestressed steel bundle 44 passes through the end of the longitudinal stress bellows located in the first longitudinal bellows, and is anchored at the two end faces of the first lower flange plate 413 along the longitudinal direction and the first longitudinal bellows by the anchoring device. A web 412 is located at both ends along the longitudinal direction; the second longitudinal prestressed steel bundle 45 passes through the end of the longitudinal prestressed bellows located in the second longitudinal bellows, and is anchored to the second lower flange plate by an anchoring device 423 at both end faces along the longitudinal direction and at both end faces of the second web 422 along the longitudinal direction; the first transverse prestressed steel bundle 46 passes through the end of the transverse stress bellows located in the first transverse bellows, and is anchored by anchoring The device is anchored at the two outermost end faces of the two first upper flange plates 411 in the transverse direction; the second transverse prestressed steel bundle 47 penetrates the end of the transverse stress bellows located in the second transverse bellows, and is anchored by The device is anchored at the outermost end faces of the two first lower flange plates 413 in the transverse direction;
第一上翼缘板411和第二上翼缘板421沿横向方向上设有用于连接第一横向预应力钢束46的第一横向波纹管,第一下翼缘板413和第二下翼缘板423沿横向方向上设有用于连接第二横向预应力钢束47的第二横向波纹管;The first upper flange plate 411 and the second upper flange plate 421 are provided with first transverse corrugated pipes for connecting the first transverse prestressed steel bundles 46 in the transverse direction, the first lower flange plate 413 and the second lower wing The edge plate 423 is provided with a second transverse corrugated tube for connecting the second transverse prestressed steel bundle 47 in the transverse direction;
更进一步的是,根据单箱多室箱梁实际的受力情况,使用者可调节第一横向预应力钢束46和第二横向预应力钢束47的束数和间距,从而加强预制边梁 41与预制中梁42之间的横向联系和相邻的预制中梁42之间的横向联系,而且能有效改善预制边梁41的外缘的受力状态。Furthermore, according to the actual stress situation of the single box multi-chamber box girder, the user can adjust the number and spacing of the first transverse prestressed steel bundles 46 and the second transverse prestressed steel bundles 47, thereby strengthening the prefabricated side beams. The lateral connection between 41 and the prefabricated center beam 42 and the lateral connection between the adjacent prefabricated center beams 42 can effectively improve the stress state of the outer edge of the prefabricated side beams 41 .
本实施例中,如图1~9所示,为了使得单箱多室箱梁4更好的适应不同类型的桥梁,当桥梁为直线等宽桥梁时,第一上翼缘板411沿纵向方向上的宽度设为等宽,第一下翼缘板413沿纵向方向上的宽度设为等宽;第二上翼缘板421 沿纵向方向上的宽度设为等宽,第二下翼缘板423沿纵向方向上的宽度设为等宽;In this embodiment, as shown in FIGS. 1 to 9 , in order to make the single-box multi-chamber box girder 4 better adapt to different types of bridges, when the bridge is a straight-line equal-width bridge, the first upper flange plate 411 is in the longitudinal direction. The width of the upper flange plate 413 is set to the same width, the width of the first lower flange plate 413 along the longitudinal direction is set to the same width; 423 The width in the longitudinal direction is set to the same width;
当桥梁为变宽桥梁时,第二上翼缘板421沿纵向方向上的宽度设为变宽,第二下翼缘板423沿纵向方向上的宽度设为变宽;When the bridge is a widened bridge, the width of the second upper flange plate 421 in the longitudinal direction is set to be widened, and the width of the second lower flange plate 423 in the longitudinal direction is set to be widened;
当桥梁为具有一定曲率半径的曲线桥梁时,第一上翼缘板411的外侧翼缘为弧线形,从而使得单箱多室箱梁4能适用于具有一定曲率半径的曲线桥梁。When the bridge is a curved bridge with a certain curvature radius, the outer flange of the first upper flange plate 411 is arc-shaped, so that the single box multi-chamber box girder 4 can be applied to a curved bridge with a certain curvature radius.
本实施例中,如图1~9所示,第一下翼缘板413包括第一端4131和与第一端4131相对设置的第二端4132,第一端4131呈马蹄形,第一端4131向外延伸20~50cm,从而在桥梁施工过程中便于安装临时支撑或者临时支座6。In this embodiment, as shown in FIGS. 1 to 9 , the first lower flange plate 413 includes a first end 4131 and a second end 4132 opposite to the first end 4131 . The first end 4131 is in a horseshoe shape, and the first end 4131 It extends outward by 20-50 cm, so as to facilitate the installation of temporary supports or temporary supports 6 during the construction of the bridge.
本实施例中,如图1~9所示,为了进一步增强相邻的预制边梁41和预制中梁42之间的连接紧固性和相邻的预制中梁42之间的连接紧固性,横向连接结构43为湿接缝,第一上翼缘板411和与第一上翼缘板411相邻的第二上翼缘板 421通过湿接缝连接,第一下翼缘板413和与第一下翼缘板413相邻的第二下翼缘板423通过湿接缝连接,相邻的第二上翼缘板421之间通过湿接缝连接,相邻的第二下翼缘板423之间通过湿接缝连接。具体的,湿接缝内填充有超高性能混凝土,超高性能混凝土具有较高的韧性、较高的抗压强度和优异的耐久性,在热养护的条件下基本无收缩,且在长期载荷作用下,其变形很小;In this embodiment, as shown in FIGS. 1 to 9 , in order to further enhance the connection tightness between the adjacent prefabricated side beams 41 and the prefabricated middle beams 42 and the connection tightness between the adjacent prefabricated middle beams 42 , the transverse connection structure 43 is a wet seam, the first upper flange plate 411 and the second upper flange plate 421 adjacent to the first upper flange plate 411 are connected by a wet seam, the first lower flange plate 413 and the second upper flange plate 421 are connected by a wet seam. The second lower flange plates 423 adjacent to the first lower flange plates 413 are connected by wet seams, the adjacent second upper flange plates 421 are connected by wet seams, and the adjacent second lower flange plates are connected by wet seams. The plates 423 are connected by wet seams. Specifically, the wet joints are filled with ultra-high performance concrete, which has high toughness, high compressive strength and excellent durability, basically no shrinkage under thermal curing conditions, and can withstand long-term loads. Under the action, its deformation is very small;
当然,相邻的预制边梁41和预制中梁42、相邻的预制中梁42之间也可以采用钢结构横向连接件进行连接,其中,在相邻的两个预制梁中,对其中一个预制梁的上翼缘板的翼缘和下翼缘板的翼缘设置预留孔,对另外一个预制梁的上翼缘板的翼缘和下翼缘板的翼缘预埋钢结构横向连接件,从而在对相邻的两个预制梁之间进行吊装和安装时,只需要将钢结构横向连接件插入对应的预留孔中,即可实现两个相邻的预制梁之间的拼接。Of course, the adjacent prefabricated side beams 41 and the prefabricated middle beams 42 and the adjacent prefabricated middle beams 42 can also be connected by steel structure transverse connectors. The flange of the upper flange plate of the prefabricated beam and the flange of the lower flange plate are provided with reserved holes, and the flange of the upper flange plate of the other prefabricated beam and the flange of the lower flange plate are laterally connected to the embedded steel structure. Therefore, when hoisting and installing between two adjacent prefabricated beams, it is only necessary to insert the steel structure transverse connector into the corresponding reserved hole to realize the splicing between the two adjacent prefabricated beams. .
本实施例中,如图1~9所示,为了进一步满足单箱多室箱梁4的伸缩、防水功能和避免雨水腐蚀梁体的要求,当单箱多室箱梁4用于简支梁桥时,根据梁桥的跨径长度或者联长计算伸缩量,并且根据计算出的伸缩量大小,在相应的墩顶处安装伸缩缝或者采用桥面连续;当单箱多室箱梁4用于连续梁桥时,则根据联长大小,在每联连续梁的梁端处设置对应的伸缩缝,在设置伸缩缝的该联的其它桥墩3上方浇注墩顶现浇混凝土,并且在相应的负弯矩波纹管中穿入负弯矩钢束。In this embodiment, as shown in Figures 1 to 9, in order to further meet the requirements of the telescopic and waterproof functions of the single-box multi-chamber box girder 4 and to avoid rainwater corrosion of the beam body, when the single-box multi-chamber box girder 4 is used for a simply supported beam In the case of bridges, the expansion and contraction amount is calculated according to the span length or joint length of the girder bridge, and according to the calculated expansion and contraction amount, expansion joints are installed at the top of the corresponding pier or the bridge deck is continuous; when the single box multi-chamber box girder 4 is used In the case of continuous girder bridges, according to the size of the joint length, the corresponding expansion joints are set at the beam ends of each continuous beam, and the pier tops are poured over the other piers 3 of the link where the expansion joints are set. Negative moment steel bundles are inserted into the negative moment bellows.
如图1~13所示,为了达到相同的目的,本实用新型还提供一种单箱多室箱梁桥的施工方法,As shown in Figures 1 to 13, in order to achieve the same purpose, the utility model also provides a construction method for a single-box multi-chamber box girder bridge,
1)当桥梁设计为多跨简支梁桥时,包括以下步骤:1) When the bridge is designed as a multi-span simply supported girder bridge, the following steps are included:
S1、在工程场地进行桩基1、承台2、桥墩3和盖梁的施工,同时在预制场中进行所述预制边梁41和预制中梁42的制作;S1, carry out the construction of the pile foundation 1, the cap 2, the bridge pier 3 and the cover beam in the engineering site, and simultaneously carry out the production of the prefabricated side beams 41 and the prefabricated middle beams 42 in the prefabricated field;
S2、在盖梁上安装多个与预制边梁41和预制中梁42相对应的临时支座6,并且在临时支座6的两侧安装临时支撑;S2, install a plurality of temporary supports 6 corresponding to the prefabricated side beams 41 and the prefabricated middle beams 42 on the cover beam, and install temporary supports on both sides of the temporary support 6;
S3、将预制边梁41和预制中梁42吊装至临时支座6和临时支撑上,临时支撑能增强预制边梁41和预制中梁42的安装稳定性;S3, hoist the prefabricated side beam 41 and the prefabricated middle beam 42 to the temporary support 6 and the temporary support, and the temporary support can enhance the installation stability of the prefabricated side beam 41 and the prefabricated middle beam 42;
S4、施工横向连接结构43,并且同时安装永久支座7;S4, construct the transverse connection structure 43, and install the permanent support 7 at the same time;
S5、第一横向预应力钢束46穿入第一上翼缘板411和第二下翼缘板423,第二横向预应力钢束47穿入第一下翼缘板413和第二下翼缘板423,并且对第一横向预应力钢束46和第二横向预应力钢束47进行张拉锚固,接着拆除临时支撑;S5. The first transverse prestressed steel bundle 46 penetrates into the first upper flange plate 411 and the second lower flange plate 423, and the second transverse prestressed steel bundle 47 penetrates into the first lower flange plate 413 and the second lower flange edge plate 423, and perform tensioning and anchoring on the first transverse prestressed steel bundle 46 and the second transverse prestressed steel bundle 47, and then remove the temporary support;
S6、浇注桥面现浇层混凝土,从而在单箱多室箱梁4的顶端形成桥面现浇层5;S6, pouring the bridge deck cast-in-situ layer concrete, thereby forming the bridge deck cast-in-place layer 5 at the top of the single-box multi-chamber box girder 4;
S7、拆除临时支座6;S7, remove the temporary support 6;
S8、施工桥面铺装及附属设施,附属设施为防撞护栏等设施;S8. Construction of bridge deck pavement and ancillary facilities, and the ancillary facilities are anti-collision guardrails and other facilities;
S9、运营通车;S9. Operation and opening to traffic;
2)当桥梁设计为连续梁结构时,包括以下步骤:2) When the bridge is designed as a continuous beam structure, the following steps are included:
S1、在工程场地进行桩基1、承台2、桥墩3和盖梁的施工,同时在预制场中进行所述预制边梁和预制中梁的制作,其中,在所述第一上翼缘板和所述第二上翼缘板安装负弯矩波纹管;S1. Carry out the construction of the pile foundation 1, the cap 2, the bridge pier 3 and the cover beam in the engineering site, and simultaneously carry out the production of the prefabricated side beam and the prefabricated middle beam in the prefabricated field, wherein, on the first upper flange A negative bending moment bellows is installed on the plate and the second upper flange plate;
S2、在盖梁上安装多个与预制边梁41和预制中梁42相对应的临时支座6,并且在临时支座6的两侧安装临时支撑,临时支撑能增强预制边梁41和预制中梁的安装稳定性;S2. Install a plurality of temporary supports 6 corresponding to the prefabricated side beams 41 and the prefabricated middle beams 42 on the cover beam, and install temporary supports on both sides of the temporary supports 6. The temporary supports can strengthen the prefabricated side beams 41 and the prefabricated middle beams 42. The installation stability of the middle beam;
S3、将预制边梁41和预制中梁42吊装至临时支座6和临时支撑上;S3, hoist the prefabricated side beam 41 and the prefabricated middle beam 42 to the temporary support 6 and the temporary support;
S4、施工横向连接结构43,并且同时安装永久支座7;S4, construct the transverse connection structure 43, and install the permanent support 7 at the same time;
S5、第一横向预应力钢束46穿入第一上翼缘板411和第二下翼缘板423,第二横向预应力钢束47穿入第一下翼缘板413和第二下翼缘板423,并且对第一横向预应力钢束46和第二横向预应力钢束47进行张拉锚固,接着拆除临时支撑;S5. The first transverse prestressed steel bundle 46 penetrates into the first upper flange plate 411 and the second lower flange plate 423, and the second transverse prestressed steel bundle 47 penetrates into the first lower flange plate 413 and the second lower flange edge plate 423, and perform tensioning and anchoring on the first transverse prestressed steel bundle 46 and the second transverse prestressed steel bundle 47, and then remove the temporary support;
S6、浇注相邻两跨之间的墩顶现浇连续段混凝土,从而完成体系转换;S6. Pouring the continuous section concrete on the top of the pier between two adjacent spans to complete the system conversion;
S7、将负弯矩钢束8穿入负弯矩波纹管中,并且对负弯矩钢束8进行张拉,从而很好的解决连续段墩顶负弯矩的问题;S7, insert the negative bending moment steel bundle 8 into the negative bending moment bellows, and stretch the negative bending moment steel bundle 8, so as to solve the problem of the negative bending moment at the top of the continuous section pier;
S8、浇注桥面现浇层混凝土,从而在预制边梁41和预制中梁42顶端形成桥面现浇层5;S8, pouring the bridge deck cast-in-situ layer concrete, thereby forming the bridge deck cast-in-place layer 5 at the top of the prefabricated side beams 41 and the prefabricated middle beams 42;
S9、拆除临时支座6;S9, remove the temporary support 6;
S10、施工桥面铺装及附属设施,附属设施为防撞护栏等设施;S10. Construction of bridge deck pavement and ancillary facilities, and the ancillary facilities are anti-collision guardrails and other facilities;
S101、运营通车。S101. Operation and opening to traffic.
基于上述设置,本实用新型的单箱多室箱梁桥的施工方法,具有如下特点:Based on the above settings, the construction method of the single-box multi-chamber box girder bridge of the present invention has the following characteristics:
(1)本实用新型的单箱多室箱梁桥采用的施工方法为预制吊装施工,预制边梁41和预制中梁42采用的是标准化、工厂化和快速化的大批量方式进行生产施工,因此,本实用新型的施工方法不仅可以加快施工进度,而且避免大规模满堂支架和模板的安装与拆卸,更进一步的是,能很好的改善施工环境,降低对施工现场周边环境的影响,具有很好的社会经济效益;(1) the construction method that the single-box multi-chamber box girder bridge of the present utility model adopts is prefabricated hoisting construction, and what the prefabricated side beams 41 and the prefabricated middle beams 42 adopt are standardized, factory-like and rapid mass modes to carry out production and construction, Therefore, the construction method of the present invention can not only speed up the construction progress, but also avoid the installation and disassembly of large-scale full house supports and formwork, and further, can well improve the construction environment, reduce the impact on the surrounding environment of the construction site, and has the advantages of good social and economic benefits;
(2)本实用新型的单箱多室箱梁桥的施工方法不仅适用于桥梁结构为多跨简支梁结构,而且还适用于桥梁结构为连续梁结构,具有使用范围广的特点;(2) The construction method of the single-box multi-chamber box girder bridge of the present invention is not only applicable to the bridge structure being a multi-span simply supported beam structure, but also applicable to the bridge structure being a continuous beam structure, and has the characteristics of a wide range of use;
(3)本实用新型的单箱多室箱梁桥的施工方法能确保单箱多室箱梁桥安装的稳定性、安全性和便利性,从而能进一步确保整个单箱多室箱梁桥结构的安装到位,且方法简单可行,具有很好的推广价值。(3) The construction method of the single-box multi-chamber box girder bridge of the present invention can ensure the stability, safety and convenience of the installation of the single-box multi-chamber box girder bridge, thereby further ensuring the entire single-box multi-chamber box girder bridge structure. The installation is in place, and the method is simple and feasible, and has good promotion value.
具体的,在相邻两跨之间的墩顶现浇连续段混凝土,从而在相邻两跨之间形成现浇连续段9。Specifically, the continuous section concrete is cast in place on the top of the pier between two adjacent spans, thereby forming a continuous section 9 in place between the two adjacent spans.
本实施例中,如图1~13所示,为了能提高预制边梁41和预制中梁42在预制过程中各项质量指标,和加快工程进度,预制边梁41和预制中梁42的预制过程如下:In this embodiment, as shown in FIGS. 1 to 13 , in order to improve various quality indicators of the prefabricated side beams 41 and the prefabricated middle beams 42 in the prefabrication process and to speed up the project progress, the prefabricated side beams 41 and the prefabricated middle beams 42 are The process is as follows:
1)当桥梁设计为多跨简支梁桥时,步骤S1中,包括以下步骤:1) When the bridge is designed as a multi-span simply supported girder bridge, step S1 includes the following steps:
S11、根据桥梁跨径、荷载等级和桥梁宽度等设计参数进行桥梁结构计算分析,确定每个单箱多室箱梁4的结构尺寸,进而确定预制中梁42和预制边梁41 的结构尺寸,以及确定预应力钢束的布置,从而能为预制边梁41和预制中梁42 的制造提供理论依据;S11. Calculate and analyze the bridge structure according to design parameters such as bridge span, load level and bridge width, determine the structural dimensions of each single-box multi-chamber box girder 4, and then determine the structural dimensions of the prefabricated middle beam 42 and the prefabricated side beams 41, and determine the arrangement of the prestressed steel beams, so as to provide a theoretical basis for the manufacture of the prefabricated side beams 41 and the prefabricated middle beams 42;
S12、建设预制场和台座;S12. Construction of prefabricated fields and pedestals;
S13、在台座上进行预制边梁41底模和预制中梁42底模的安装和铺设;S13, the prefabricated side beam 41 bottom form and the prefabricated middle beam 42 bottom form are installed and laid on the pedestal;
S14、在预制边梁41底模上和预制中梁42底模上分别绑扎组成预制边梁41 的钢筋骨架和预制中梁42的钢筋骨架,并且在组成预制边梁41的钢筋骨架和预制中梁42的钢筋骨架中预埋横向连接结构43,其中,组成预制边梁41的钢筋骨架和组成预制中梁42的钢筋骨架由数控钢筋弯曲机进行弯曲;S14. Bind the steel frame of the prefabricated side beam 41 and the steel frame of the prefabricated middle beam 42 on the bottom form of the prefabricated side beam 41 and the bottom form of the precast middle beam 42 respectively, and bind the steel frame of the precast side beam 41 and the prefabricated middle beam 41 together. The transverse connection structure 43 is pre-embedded in the steel frame of the beam 42, wherein the steel frame of the prefabricated side beam 41 and the steel frame of the prefabricated middle beam 42 are bent by a CNC steel bending machine;
S15、在组成预制边梁41的钢筋骨架和预制中梁42的钢筋骨架中安装纵向波纹管和横向波纹管,其中,在预制边梁41的钢筋骨架中安装第一横向波纹管,在预制中梁42的钢筋骨架中安装第二横向波纹管;S15, install longitudinal corrugated pipes and transverse corrugated pipes in the reinforced skeleton of the prefabricated side beam 41 and the reinforced skeleton of the prefabricated middle beam 42, wherein the first transverse corrugated pipe is installed in the reinforced skeleton of the prefabricated side beam 41, and in the prefabricated A second transverse corrugated pipe is installed in the steel skeleton of the beam 42;
S16、在台座上进行预制边梁41侧模、预制边梁41端模、预制中梁42侧模和预制中梁42端模的安装;S16, install the prefabricated side beam 41 side form, the prefabricated side beam 41 end form, the prefabricated middle beam 42 side form and the prefabricated middle beam 42 end form on the pedestal;
S17、向预制边梁41侧模、预制边梁41端模和预制边梁41底模形成的第一浇注槽内的钢筋骨架中浇注混凝土;向预制中梁42侧模、预制中梁42端模和预制中梁42底模形成的第二浇注槽内的钢筋骨架中浇注混凝土;最后检查各个横向连接结构43的位置;S17, pour concrete into the steel skeleton in the first pouring groove formed by the side mold of the prefabricated side beam 41, the end mold of the prefabricated side beam 41 and the bottom mold of the prefabricated side beam 41; Concrete is poured into the steel skeleton in the second pouring trough formed by the mould and the bottom mould of the prefabricated middle beam 42; finally, the position of each transverse connection structure 43 is checked;
S18、浇注完成后的预制边梁41和预制中梁42进行养护,养护时间大于7 天后,且组成预制边梁41的混凝土和预制中梁42的混凝土的强度和弹性模型达到设计值的85%后,拆除预制边梁41侧模和预制中梁42侧模,其中,浇注完成后的预制边梁41和预制中梁42通过自动喷淋养护系统进行养护;S18. The prefabricated side beams 41 and the prefabricated middle beams 42 after the pouring are cured. After the curing time is more than 7 days, and the strength and elasticity model of the concrete constituting the prefabricated side beams 41 and the prefabricated middle beams 42 reach 85% of the design value Afterwards, remove the prefabricated side beams 41 and the prefabricated middle beams 42, wherein the prefabricated side beams 41 and the prefabricated middle beams 42 are maintained by the automatic spray curing system;
S19、将第一纵向预应力钢束44穿入第一纵向波纹管,将第二纵向预应力钢束45穿入第二纵向波纹管,待第一纵向预应力钢束44和第二纵向预应力钢束45穿束完成后,对第一纵向预应力钢束44和第二纵向预应力钢束45进行张拉,其中上述张拉过程通过智能张拉设备进行;S19. Insert the first longitudinal prestressed steel bundle 44 into the first longitudinal bellows, insert the second longitudinal prestressed steel bundle 45 into the second longitudinal bellows, wait until the first longitudinal prestressed steel bundle 44 and the second longitudinal prestressed After the stress steel bundle 45 is threaded, the first longitudinal prestressed steel bundle 44 and the second longitudinal prestressed steel bundle 45 are tensioned, wherein the above-mentioned tensioning process is performed by intelligent tensioning equipment;
S110、进行孔道压浆和封锚养护,其中,孔道压浆采用智能压浆系统进行,封锚可通过快凝水泥或石膏进行;S110. Carry out grouting and anchor sealing maintenance, wherein, the grouting of the duct is carried out by an intelligent grouting system, and the sealing of the anchor can be carried out by fast-setting cement or gypsum;
2)当桥梁设计为连续梁桥时,步骤S1中,包括以下步骤:2) When the bridge is designed as a continuous girder bridge, in step S1, the following steps are included:
S11、根据桥梁跨径、荷载等级和桥梁宽度等设计参数进行桥梁结构计算分析,确定每个单箱多室箱梁4的结构尺寸,进而确定预制中梁42和预制边梁41 的结构尺寸,以及确定预应力钢束的布置,从而能为预制边梁41和预制中梁42 的制造提供理论依据;S11. Calculate and analyze the bridge structure according to design parameters such as bridge span, load level and bridge width, determine the structural dimensions of each single-box multi-chamber box girder 4, and then determine the structural dimensions of the prefabricated middle beam 42 and the prefabricated side beams 41, and determine the arrangement of the prestressed steel beams, so as to provide a theoretical basis for the manufacture of the prefabricated side beams 41 and the prefabricated middle beams 42;
S12、建设预制场和台座;S12. Construction of prefabricated fields and pedestals;
S13、在台座上进行预制边梁41底模和预制中梁42底模的安装和铺设;S13, the prefabricated side beam 41 bottom form and the prefabricated middle beam 42 bottom form are installed and laid on the pedestal;
S14、在预制边梁41底模上和预制中梁42底模上分别绑扎组成预制边梁41 的钢筋骨架和预制中梁42的钢筋骨架,并且在组成预制边梁41的钢筋骨架和预制中梁42的钢筋骨架中预埋横向连接结构43,其中,组成预制边梁41的钢筋骨架和组成预制中梁42的钢筋骨架由数控钢筋弯曲机进行弯曲;S14. Bind the steel frame of the prefabricated side beam 41 and the steel frame of the prefabricated middle beam 42 on the bottom form of the prefabricated side beam 41 and the bottom form of the precast middle beam 42 respectively, and bind the steel frame of the precast side beam 41 and the prefabricated middle beam 41 together. The transverse connection structure 43 is pre-embedded in the steel frame of the beam 42, wherein the steel frame of the prefabricated side beam 41 and the steel frame of the prefabricated middle beam 42 are bent by a CNC steel bending machine;
S15、在组成预制边梁41的钢筋骨架和预制中梁42的钢筋骨架中安装纵向波纹管、横向波纹管和负弯矩钢束波纹管,其中,在预制边梁41的钢筋骨架中安装第一横向波纹管,在预制中梁42的钢筋骨架中安装第二横向波纹管;S15, install longitudinal corrugated pipes, transverse corrugated pipes and negative bending moment steel bundle corrugated pipes in the steel skeleton of the prefabricated side beam 41 and the steel skeleton of the prefabricated middle beam 42, wherein, install the No. A transverse corrugated pipe, a second transverse corrugated pipe is installed in the steel skeleton of the prefabricated middle beam 42;
S16、在台座上进行预制边梁41侧模、预制边梁41端模、预制中梁42侧模和预制中梁42端模的安装;S16, install the prefabricated side beam 41 side form, the prefabricated side beam 41 end form, the prefabricated middle beam 42 side form and the prefabricated middle beam 42 end form on the pedestal;
S17、向预制边梁41侧模、预制边梁41端模和预制边梁41底模形成的第一浇注槽内的钢筋骨架中浇注混凝土;向预制中梁42侧模、预制中梁42端模和预制中梁42底模形成的第二浇注槽内的钢筋骨架中浇注混凝土;最后检查各个横向连接结构43的位置;S17, pour concrete into the steel skeleton in the first pouring groove formed by the side mold of the prefabricated side beam 41, the end mold of the prefabricated side beam 41 and the bottom mold of the prefabricated side beam 41; Concrete is poured into the steel skeleton in the second pouring trough formed by the mould and the bottom mould of the prefabricated middle beam 42; finally, the position of each transverse connection structure 43 is checked;
S18、浇注完成后的预制边梁41和预制中梁42进行养护,养护时间大于7 天后,且组成预制边梁41的混凝土和预制中梁42的混凝土的强度和弹性模型达到设计值的85%后,拆除预制边梁41侧模和预制中梁42侧模,其中,浇注完成后的预制边梁41和预制中梁42通过自动喷淋养护系统进行养护;S18. The prefabricated side beams 41 and the prefabricated middle beams 42 after the pouring are cured. After the curing time is more than 7 days, and the strength and elasticity model of the concrete constituting the prefabricated side beams 41 and the prefabricated middle beams 42 reach 85% of the design value Afterwards, remove the prefabricated side beams 41 and the prefabricated middle beams 42, wherein the prefabricated side beams 41 and the prefabricated middle beams 42 are maintained by the automatic spray curing system;
S19、将第一纵向预应力钢束44穿入第一纵向波纹管,将第二纵向预应力钢束45穿入第二纵向波纹管,待第一纵向预应力钢束44和第二纵向预应力钢束45穿束完成后,对第一纵向预应力钢束44和第二纵向预应力钢束45进行张拉,其中上述张拉过程通过智能张拉设备进行;S19. Insert the first longitudinal prestressed steel bundle 44 into the first longitudinal bellows, insert the second longitudinal prestressed steel bundle 45 into the second longitudinal bellows, wait until the first longitudinal prestressed steel bundle 44 and the second longitudinal prestressed After the stress steel bundle 45 is threaded, the first longitudinal prestressed steel bundle 44 and the second longitudinal prestressed steel bundle 45 are tensioned, wherein the above-mentioned tensioning process is performed by intelligent tensioning equipment;
S110、进行孔道压浆和封锚养护,其中,孔道压浆采用智能压浆系统进行,封锚可通过快凝水泥或石膏进行。S110. Carry out grouting and anchor sealing maintenance, wherein the grouting of the duct is carried out by an intelligent grouting system, and the sealing of the anchor can be carried out by fast-setting cement or gypsum.
应当理解的是,本实用新型中采用术语“第一”、“第二”等来描述各种信息,但这些信息不应限于这些术语,这些术语仅用来将同一类型的信息彼此区分开。例如,在不脱离本实用新型范围的情况下,“第一”信息也可以被称为“第二”信息,类似的,“第二”信息也可以被称为“第一”信息。It should be understood that the terms "first", "second", etc. are used to describe various information in the present invention, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information without departing from the scope of the present invention.
以上所述是本实用新型的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本实用新型原理的前提下,还可以做出若干改进和变形,这些改进和变形也视为本实用新型的保护范围。The above is the preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and deformations can also be made. These improvements and deformations It is also regarded as the protection scope of the present invention.
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CN108951399A (en) * | 2018-09-05 | 2018-12-07 | 广州市城市规划勘测设计研究院 | A kind of Single-box multi-chamber box beam bridge and its construction method |
CN111877182A (en) * | 2020-09-03 | 2020-11-03 | 广东省建筑设计研究院有限公司 | Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge |
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CN108951399A (en) * | 2018-09-05 | 2018-12-07 | 广州市城市规划勘测设计研究院 | A kind of Single-box multi-chamber box beam bridge and its construction method |
CN111877182A (en) * | 2020-09-03 | 2020-11-03 | 广东省建筑设计研究院有限公司 | Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge |
CN111877182B (en) * | 2020-09-03 | 2021-09-14 | 广东省建筑设计研究院有限公司 | Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge |
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