CN-116289646-B - Reinforcing construction method for hinged part of arch bridge

Abstract

The invention provides a reinforcement construction method for an arch bridge hinge part, and relates to the technical field of bridge repair. The method comprises the steps of injecting water-stopping materials into a construction joint of a hinged part of existing arch ring concrete, removing water stains and loose parts on the existing arch ring concrete, polishing the surface of the water stains and loose parts, pasting a rubber water stop belt on the bottom surface of the existing arch ring concrete, binding reinforcing steel bars, installing templates, casting high-strength grouting materials with increased cross sections at the bottom of the existing arch ring concrete, opening a filling groove in the construction joint of the hinged part of the high-strength grouting materials with increased cross sections after the newly cast high-strength grouting materials with increased cross sections reach the designed strength, injecting water-stopping materials into the upper part of the filling groove, and injecting consolidation materials into the lower part of the filling groove.

Inventors

• SONG WEI
• NIU XIAOKAI
• CHEN BO
• ZHANG HAN
• Cheng lanting
• LIU BINGYU
• KANG YAJING

Assignees

• 北京市政路桥科技发展有限公司
• 华瀚设计顾问(苏州)有限公司
• 北京市市政工程研究院
• 北京市建设工程质量第三检测所有限责任公司
• 北京市建壮咨询有限公司

Dates

Publication Date

20260505

Application Date

20221215

Claims (8)

1. 1. The method for reinforcing and constructing the hinging part of the arch bridge is characterized by comprising the following steps of: s1, injecting a water stopping material into a construction joint of a hinged part of the existing arch ring concrete; s2, removing water stains and loose parts on the existing arch ring concrete, and polishing the surface of the existing arch ring concrete to be rough; s3, sticking a rubber water stop on the bottom surface of the existing arch ring concrete; S4, binding steel bars, installing a template, and pouring high-strength grouting material with an increased section at the bottom of the existing arch ring concrete; S5, after the newly poured high-strength grouting material with the increased cross section reaches the design strength, a filling groove is formed in a construction joint of the hinge part of the high-strength grouting material with the increased cross section; S6, injecting a water stopping material into the upper part of the filling groove obtained in the step S5, and injecting a solidifying material into the lower part of the filling groove, wherein the water stopping material in the step S6 is elastic rubber asphalt, and the solidifying material in the step S6 is epoxy cement.
2. 2. A method of constructing an arch bridge hinge according to claim 1, wherein the water stop material in step S1 is elastomeric asphalt.
3. 3. A method of constructing an arch bridge hinge according to claim 1, wherein the existing arch ring concrete in step S2 has a surface finish width of 30cm.
4. 4. A method of constructing an arch bridge joint reinforcement according to claim 1, wherein the width of the rubber water stop in step S3 is 30cm, and the length of the rubber water stop is the same as the length of the existing arch ring concrete joint construction joint.
5. 5. A method of constructing an arch bridge hinge according to claim 1, wherein the thickness of the increased cross-section high-strength grouting material in step S4 is 15cm.
6. 6. A method of constructing an arch bridge hinge according to claim 1, wherein the width of the filling slot in step S5 is 2cm.
7. 7. A method of constructing an arch bridge hinge according to claim 1, wherein the elastomeric asphalt is injected to a thickness of 5cm.
8. 8. A method of constructing an arch bridge hinge according to claim 1, wherein the epoxy cement is injected to a thickness of 2cm.

Description

Reinforcing construction method for hinged part of arch bridge Technical Field The invention relates to the technical field of bridge repair, in particular to a reinforcement construction method for an arch bridge hinge part. Background The arch bridge is divided into a hingeless arch, a double-hinge arch and a triple-hinge arch according to a static force system of an arch ring, and along with the extension of the service period, the problem of bridge structure diseases is increasingly prominent, particularly the double-hinge arch and the triple-hinge arch, and the situation of water leakage at a hinge part is often accompanied when the structural bearing capacity is reduced. The inventor finds that at least the following technical problems exist in the prior art that the existing construction method can not simultaneously solve the problems of strengthening the structure and improving the water-proof capacity reserve of the hinge part. Disclosure of Invention The invention aims to provide a construction method for reinforcing an articulated part of an arch bridge, which aims to solve the technical problems that the prior art cannot simultaneously solve the structure reinforcement and the improvement of the water-proof capacity reserve of the articulated part. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below. In order to achieve the above purpose, the present invention provides the following technical solutions: a reinforcement construction method for an arch bridge hinge part comprises the following steps: s1, injecting a water stopping material into a construction joint of a hinged part of the existing arch ring concrete; s2, removing water stains and loose parts on the existing arch ring concrete, and polishing the surface of the existing arch ring concrete to be rough; s3, sticking a rubber water stop on the bottom surface of the existing arch ring concrete; S4, binding steel bars, installing a template, and pouring high-strength grouting material with an increased section at the bottom of the existing arch ring concrete; S5, after the newly poured high-strength grouting material with the increased cross section reaches the design strength, a filling groove is formed in a construction joint of the hinge part of the high-strength grouting material with the increased cross section; S6, injecting a water stopping material into the upper part of the filling groove obtained in the step S5, and injecting a consolidation material into the lower part of the filling groove. Preferably, the water stop material in step S1 is elastic rubber asphalt. Preferably, the surface finish width of the existing arch ring concrete in step S2 is 30cm. Preferably, the width of the rubber water stop in the step S3 is 30cm, and the length of the rubber water stop is the same as the length of the construction joint of the hinge part of the existing arch ring concrete. Preferably, the thickness of the high-strength grouting material with increased cross section in the step S4 is 15cm. Preferably, the width of the filling groove in step S5 is 2cm. Preferably, the water stop material in step S6 is elastic rubber asphalt. Preferably, the injection thickness of the elastic rubber asphalt is 5cm. Preferably, the consolidation material in step S6 is epoxy cement. Preferably, the injection thickness of the epoxy cement is 2cm. The method has the beneficial effects that the hinging part of the existing arch ring concrete can be effectively reinforced by adopting the arch bridge hinging part reinforcing construction method, so that the hinging part can still keep the hinging capability, the overall structural strength of the arch bridge is kept, in addition, the waterproof capability of the hinging part can be improved, a certain degree of waterproof reserve is reserved, and the water seepage and water leakage of the hinging part are avoided. Drawings In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a block diagram of the present invention; FIG. 2 is a block diagram of the present invention showing the construction of an arch bridge in a three-hinged configuration; In the figure, 1, the existing arch ring concrete, 11, the construction joint of the hinge part; 2. Increasing the section of the high-strength grouting material, and filling a groove; 3. rubber water stop. Detailed Description In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of th