CN110747741A - Wet joint construction template and construction method - Google Patents
Wet joint construction template and construction method 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/065—Joints having sliding plates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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Abstract
Description
技术领域technical field
本发明涉及混凝土施工技术领域，具体涉及一种湿接缝施工模板及施工方法。The invention relates to the technical field of concrete construction, in particular to a wet joint construction template and a construction method.
背景技术Background technique
T型梁是我国修建较多的桥梁结构。随着时间的推移，技术的推进，快速施工方法在国外已经逐渐占据主导。而在我国，快速施工工艺也逐渐受到重视。交通的中断会对当今发展快速的社会和经济造成较大影响。如何缩短工期，减少对已有交通的干扰，实现快速施工工艺是社会发展需要研究的问题。预制节段式桥梁一般通过在预制厂预制再运输到现场拼装，极大缩短了施工工期，减少了对周围交通的影响。T-beams are the most commonly built bridge structures in my country. With the passage of time and the advancement of technology, rapid construction methods have gradually become dominant in foreign countries. In my country, rapid construction technology has gradually received attention. Disruption to transportation can have a major impact on today's fast-developing societies and economies. How to shorten the construction period, reduce the interference to the existing traffic, and realize the rapid construction technology is a problem that needs to be studied in social development. Prefabricated segmental bridges are generally prefabricated in a prefabricated factory and then transported to the site for assembly, which greatly shortens the construction period and reduces the impact on surrounding traffic.
节段式桥梁在最后工程阶段都需要对节段间的接缝进行现浇混凝土，从而使得节段间形成一个整体，湿接缝是其中一种接缝。湿接缝是指预应力混凝土梁体分块预制，悬臂拚装成大跨度连续梁，梁体间采用现浇混凝土把梁块连成整体的接缝。目前湿接缝主要用于节段式桥梁的合拢段和误差校准段，在桥梁架设后，相邻梁体之间浇筑湿接缝混凝土使梁体作为整体受力结构。湿接缝在施工需要先架设模板，传统模板一般采用满堂支架法立模和悬吊法立模，满堂支架法立模和悬吊法立模都需要在桥梁下架设支架，因此会对桥下的交通影响较大。In the final engineering stage of the segmental bridge, the joints between the segments need to be cast-in-place concrete, so that the segments form a whole, and the wet joint is one of the joints. Wet joints refer to prestressed concrete beams that are prefabricated in blocks, cantilevered to form a large-span continuous beam, and the beams are connected by cast-in-place concrete to form a whole joint. At present, wet joints are mainly used for the closing section and error calibration section of segmental bridges. After the bridge is erected, the wet joint concrete is poured between adjacent beams to make the beams as a whole stress-bearing structure. Wet joints need to be erected first during construction. Traditional templates generally use full-house bracket method vertical formwork and suspension method vertical formwork. Both full-house bracket method vertical formwork and suspension method vertical formwork need to be erected under the bridge. traffic has a greater impact.
发明内容SUMMARY OF THE INVENTION
本发明目的在于克服现有技术的缺点与不足，提供了一种湿接缝施工模板，既满足湿接缝混凝土的施工要求，也不影响桥下交通，同时可作为永久结构加强梁体的纵向连接。The purpose of the invention is to overcome the shortcomings and deficiencies of the prior art, and to provide a wet joint construction template, which not only meets the construction requirements of wet joint concrete, but also does not affect the traffic under the bridge, and can be used as a permanent structure to strengthen the longitudinal direction of the beam body. connect.
为实现上述目的，本发明采用的技术方案如下：For achieving the above object, the technical scheme adopted in the present invention is as follows:
一种湿接缝施工模板，包括位于湿接缝两侧的桥梁的左腹板和右腹板，左腹板底面固定设有左支撑钢板，左支撑钢板一端固定在左腹板底部、另一端伸出至湿接缝内；右腹板底面固定设有右支撑钢板，右支撑钢板一端固定在右腹板底部、另一端伸出至湿接缝内，左支撑钢板另一端与右支撑钢板另一端通过连接钢板相连接，左支撑钢板、连接钢板和右支撑钢板构成湿接缝底部的密封模板；左腹板下部和右腹板下部在位于连接钢板上方的位置通过预应力钢绞线相固定连接。A wet joint construction formwork comprises left and right webs of bridges located on both sides of the wet joint, a left supporting steel plate is fixed on the bottom surface of the left web, and one end of the left supporting steel plate is fixed at the bottom of the left web and the other end. Protruding into the wet joint; the bottom surface of the right web is fixed with a right supporting steel plate, one end of the right supporting steel plate is fixed at the bottom of the right web, the other end protrudes into the wet joint, and the other end of the left supporting steel plate and the right supporting steel plate are separated. One end is connected by connecting steel plates, and the left supporting steel plate, the connecting steel plate and the right supporting steel plate constitute the sealing formwork at the bottom of the wet joint; the lower part of the left web plate and the lower part of the right web plate are fixed by the prestressed steel strand at the position above the connecting steel plate connect.
由上可知，本发明的施工模板采用左支撑钢板、连接钢板和右支撑钢板构成湿接缝底部的密封模板，不需要用到支架，在满足湿接缝混凝土的施工要求同时，也不影响桥下交通，同时可作为永久结构加强梁体的纵向连接；通过预应力钢绞线加强左腹板和右腹板的纵向连接，达到提高承载力，减少挠度和弯矩的作用，防止左腹板和右腹板在承受荷载时湿接缝键齿过早分离失去承载能力。It can be seen from the above that the construction formwork of the present invention adopts the left supporting steel plate, the connecting steel plate and the right supporting steel plate to form the sealing formwork at the bottom of the wet joint, and does not need to use a bracket, which meets the construction requirements of the wet joint concrete and does not affect the bridge. At the same time, it can be used as a permanent structure to strengthen the longitudinal connection of the beam body; the longitudinal connection between the left web and the right web is strengthened by prestressed steel strands, so as to improve the bearing capacity, reduce the deflection and bending moment, and prevent the left web and the right web under load due to premature separation of the key teeth of the wet seam and loss of load-carrying capacity.
作为本发明的一种改进，所述连接钢板分别通过螺栓螺母与左支撑钢板另一端、右支撑钢板另一端相连接。As an improvement of the present invention, the connecting steel plates are respectively connected with the other end of the left support steel plate and the other end of the right support steel plate through bolts and nuts.
作为本发明的一种改进，所述左腹板和右腹板在下部位于连接钢板上方的位置对称开有至少两个预留孔，预留孔处通过螺栓螺母锚固有高强钢板，预应力钢绞线一端与位于左腹板的高强钢板固定连接、另一端与位于右腹板的高强钢板固定连接。As an improvement of the present invention, at least two reserved holes are symmetrically opened at the lower part of the left web plate and the right web plate above the connecting steel plates, and the reserved holes are anchored with high-strength steel plates through bolts and nuts, and the prestressed steel plates One end of the strand is fixedly connected to the high-strength steel plate located on the left web, and the other end is fixedly connected to the high-strength steel plate located on the right web.
本发明还提供一种湿接缝施工方法。The invention also provides a wet joint construction method.
为实现上述目的，本发明采用的技术方案如下：For achieving the above object, the technical scheme adopted in the present invention is as follows:
一种湿接缝施工方法，其包括以下步骤：A wet joint construction method, comprising the following steps:
在位于湿接缝左侧的桥梁的左腹板底部固定安装左支撑钢板，使得左支撑钢板一端固定在左腹板底部、另一端伸出至湿接缝内；Fix and install the left support steel plate at the bottom of the left web plate of the bridge on the left side of the wet joint, so that one end of the left support steel plate is fixed at the bottom of the left web plate, and the other end protrudes into the wet joint;
在位于湿接缝右侧的桥梁的右腹板底部固定安装右支撑钢板，使得右支撑钢板一端通过固定在右腹板底部、另一端伸出至湿接缝内；The right support steel plate is fixedly installed at the bottom of the right web plate of the bridge located on the right side of the wet joint, so that one end of the right support plate is fixed at the bottom of the right web plate and the other end protrudes into the wet joint;
利用连接钢板将左支撑钢板另一端与右支撑钢板另一端相连接，左支撑钢板、连接钢板和右支撑钢板构成湿接缝底部的密封模板；The other end of the left support steel plate is connected with the other end of the right support steel plate by the connecting steel plate, and the left support steel plate, the connecting steel plate and the right support steel plate constitute the sealing formwork at the bottom of the wet joint;
左腹板下部和右腹板下部在位于连接钢板上方的位置通过预应力钢绞线相固定连接；The lower part of the left web and the lower part of the right web are fixedly connected by prestressed steel strands at the position above the connecting steel plate;
然后向湿接缝灌入混凝土，施工完毕。Concrete is then poured into the wet joints and construction is complete.
与现有技术相比，本发明具有以下优点：Compared with the prior art, the present invention has the following advantages:
本发明的施工模板采用左支撑钢板、连接钢板和右支撑钢板构成湿接缝底部的密封模板，不需要用到支架，在满足湿接缝混凝土的施工要求同时，也不影响桥下交通，同时可作为永久结构加强梁体的纵向连接；The construction formwork of the present invention adopts the left supporting steel plate, the connecting steel plate and the right supporting steel plate to form the sealing formwork at the bottom of the wet joint, does not need to use a bracket, meets the construction requirements of the wet joint concrete, does not affect the traffic under the bridge, and at the same time It can be used as a permanent structure to strengthen the longitudinal connection of the beam body;
通过预应力钢绞线加强左腹板和右腹板的纵向连接，达到提高承载力，减少挠度和弯矩的作用，防止左腹板和右腹板在承受荷载时湿接缝键齿过早分离失去承载能力。The longitudinal connection between the left and right webs is strengthened by prestressed steel strands, so as to improve the bearing capacity, reduce the deflection and bending moment, and prevent the left and right webs from being wet-jointed prematurely when they are under load. Separation loses carrying capacity.
附图说明Description of drawings
图1为本发明湿接缝施工模板的结构示意图。FIG. 1 is a schematic structural diagram of a wet joint construction template of the present invention.
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的一部分实施例，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，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.
实施例Example
请参考图1，一种湿接缝施工模板，包括位于湿接缝10两侧的桥梁的左腹板20和右腹板30；Please refer to FIG. 1 , a wet joint construction formwork, including the left web 20 and the right web 30 of the bridge located on both sides of the wet joint 10;
左腹板20底面固定设有左支撑钢板40，左支撑钢板40一端固定在左腹板20底部、另一端伸出至湿接缝10内；A left support steel plate 40 is fixed on the bottom surface of the left web 20, one end of the left support steel 40 is fixed at the bottom of the left web 20, and the other end extends into the wet joint 10;
右腹板30底面固定设有右支撑钢板50，右支撑钢板50一端固定在右腹板30底部、另一端伸出至湿接缝10内；A right support steel plate 50 is fixed on the bottom surface of the right web 30, one end of the right support steel 50 is fixed at the bottom of the right web 30, and the other end extends into the wet joint 10;
左支撑钢板40另一端与右支撑钢板50另一端通过连接钢板60相连接，左支撑钢板40、连接钢板60和右支撑钢板50构成湿接缝10底部的密封模板；The other end of the left support steel plate 40 and the other end of the right support steel plate 50 are connected by a connecting steel plate 60, and the left support steel plate 40, the connecting steel plate 60 and the right support steel plate 50 constitute a sealing template at the bottom of the wet joint 10;
左腹板20下部和右腹板30下部在位于连接钢板60上方的位置通过预应力钢绞线80相固定连接。The lower part of the left web 20 and the lower part of the right web 30 are fixedly connected by a prestressed steel strand 80 at a position above the connecting steel plate 60 .
由上可知，本发明的施工模板采用左支撑钢板、连接钢板和右支撑钢板构成湿接缝底部的密封模板，不需要用到支架，在满足湿接缝混凝土的施工要求同时，也不影响桥下交通，同时可作为永久结构加强梁体的纵向连接；通过预应力钢绞线加强左腹板和右腹板的纵向连接，达到提高承载力，减少挠度和弯矩的作用，防止左腹板和右腹板在承受荷载时湿接缝键齿过早分离失去承载能力。It can be seen from the above that the construction formwork of the present invention adopts the left supporting steel plate, the connecting steel plate and the right supporting steel plate to form the sealing formwork at the bottom of the wet joint, and does not need to use a bracket, which meets the construction requirements of the wet joint concrete and does not affect the bridge. At the same time, it can be used as a permanent structure to strengthen the longitudinal connection of the beam body; the longitudinal connection between the left web and the right web is strengthened by prestressed steel strands, so as to improve the bearing capacity, reduce the deflection and bending moment, and prevent the left web and the right web under load due to premature separation of the key teeth of the wet seam and loss of load-carrying capacity.
在本实施例中，所述连接钢板60分别通过螺栓螺母70与左支撑钢板40另一端、右支撑钢板50另一端相连接。通过螺栓螺母可拆卸连接，有利于安装和拆卸，方便施工。In this embodiment, the connecting steel plates 60 are respectively connected with the other end of the left supporting steel plate 40 and the other end of the right supporting steel plate 50 through bolts and nuts 70 . Removable connection through bolts and nuts is conducive to installation and disassembly, and is convenient for construction.
具体地，在本实施例中，所述左腹板20和右腹板30在下部位于连接钢板上方的位置对称开有至少两个预留孔，预留孔处通过螺栓螺母91锚固有高强钢板90，预应力钢绞线80一端与位于左腹板20的高强钢板固定连接、另一端与位于右腹板30的高强钢板固定连接。Specifically, in this embodiment, the left web 20 and the right web 30 are symmetrically provided with at least two reserved holes at the lower part above the connecting steel plates, and the high-strength steel plates are anchored at the reserved holes through bolts and nuts 91 90 , one end of the prestressed steel strand 80 is fixedly connected to the high-strength steel plate located on the left web 20 , and the other end is fixedly connected to the high-strength steel plate located on the right web 30 .
一种湿接缝施工方法，其包括以下步骤：A wet joint construction method, comprising the following steps:
在位于湿接缝左侧的桥梁的左腹板底部固定安装左支撑钢板，使得左支撑钢板一端固定在左腹板底部、另一端伸出至湿接缝内；Fix and install the left support steel plate at the bottom of the left web plate of the bridge on the left side of the wet joint, so that one end of the left support steel plate is fixed at the bottom of the left web plate, and the other end protrudes into the wet joint;
在位于湿接缝右侧的桥梁的右腹板底部固定安装右支撑钢板，使得右支撑钢板一端通过固定在右腹板底部、另一端伸出至湿接缝内；The right support steel plate is fixedly installed at the bottom of the right web plate of the bridge located on the right side of the wet joint, so that one end of the right support plate is fixed at the bottom of the right web plate and the other end protrudes into the wet joint;
利用连接钢板将左支撑钢板另一端与右支撑钢板另一端相连接，左支撑钢板、连接钢板和右支撑钢板构成湿接缝底部的密封模板；The other end of the left support steel plate is connected with the other end of the right support steel plate by the connecting steel plate, and the left support steel plate, the connecting steel plate and the right support steel plate constitute the sealing formwork at the bottom of the wet joint;
左腹板下部和右腹板下部在位于连接钢板上方的位置通过预应力钢绞线相固定连接；The lower part of the left web and the lower part of the right web are fixedly connected by prestressed steel strands at the position above the connecting steel plate;
然后向湿接缝灌入混凝土，施工完毕。Concrete is then poured into the wet joints and construction is complete.
上述实施例为本发明较佳的实施方式，但本发明的实施方式并不受上述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The above-mentioned embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, The simplification should be equivalent replacement manners, which are all included in the protection scope of the present invention.
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| CN113512929A (en) * | 2021-03-19 | 2021-10-19 | 宁波市政工程建设集团股份有限公司 | Steel-concrete combined structural hidden cover beam structure system and construction method thereof |
| CN119266121A (en) * | 2024-11-29 | 2025-01-07 | 郑州大学 | An assembled FRP profile-concrete continuous composite beam structure and construction method thereof |
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| CN119266121A (en) * | 2024-11-29 | 2025-01-07 | 郑州大学 | An assembled FRP profile-concrete continuous composite beam structure and construction method thereof |
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Application publication date: 20200204 |