A steel bridge construction structure
By installing the bearing support on the pier column bearing table and combining the lifting device and the reaction anchoring device, the problem of traditional bridge construction methods being costly and unable to make full use of the construction platform under specific terrain conditions is solved, and efficient in-situ lifting or demolition of large-tonnage steel bridges is achieved, significantly shortening the construction period and reducing costs.
Patent Information
- Application Number
- CN202421341597.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-13
AI Technical Summary
Traditional bridge hoisting construction methods are relatively expensive and cannot fully utilize the good construction platform conditions under the conditions of low pier height and good construction conditions, making it difficult to achieve efficient in-situ lifting or demolition of large-tonnage steel bridges.
The load bearing bracket is installed on the pier column bearing table, combined with a simple lifting device and a reaction anchoring device to realize the in-situ lifting or dismantling of large-tonnage steel bridges.
By fully utilizing the load-bearing capacity of the existing pier column bearing, the construction period is significantly shortened and the cost is reduced, large-segment lifting is realized, the construction process is simplified, and technical difficulty and risks are reduced.
Smart Images
Figure CN222744797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, and further relates to a steel bridge construction structure. Background Art
[0002] Traditional bridge hoisting construction requires the prefabricated bridge components to be lifted from the ground or transport vehicles by lifting equipment, and then accurately placed in the designed position. Traditional oversized cranes are expensive. For steel beam bridges, conventional construction methods include support construction, top-pushing construction, cantilever assembly and other construction methods. The above construction methods can adapt to different terrain conditions, and the processes also have their own advantages and disadvantages. However, for terrain conditions with low pier height and good construction conditions, the cost is high and its good construction platform conditions cannot be fully utilized. Utility Model Content
[0003] In view of the above technical problems, the purpose of the utility model is to provide a steel bridge construction structure, install a load-bearing bracket on the pier cap, make full use of the bearing capacity of the existing pier cap, and then through a simple lifting device and a reaction anchoring device, realize the in-situ lifting or dismantling of a large-tonnage steel bridge, with obvious advantages in construction period and economy.
[0004] In order to achieve the above-mentioned purpose, the utility model provides a steel bridge construction structure, which includes a main beam segment and a main beam main section. The steel bridge construction structure includes a load-bearing support, a lifting device, and a reaction force anchoring device. The load-bearing support is installed on the main beam segment, and the main beam segment is installed on the pier column cap; the lifting device is installed at the end of the load-bearing support and connected to the end of the main beam main section, suitable for lifting the main beam main section; the reaction force anchoring device is connected to the other end of the load-bearing support to offset the reaction force of the lifting device.
[0005] In some embodiments, the lifting device and the reaction force anchoring device are respectively installed at both ends of the load-bearing support, the lifting device is connected to the end of the main section of the main beam, and the reaction force anchoring device is connected to the anchor pile and the load-bearing support.
[0006] In some embodiments, the lifting device includes a jack and lifting steel bars, the jack is installed on the load-bearing bracket, and the lifting steel bars connect the jack and the end of the main section of the main beam.
[0007] In some embodiments, the reaction force anchoring device includes an anchor pile and a reaction force steel bar, the anchor pile is fixedly installed on the ground, and the reaction force steel bar connects the load-bearing support and the anchor pile.
[0008] In some embodiments, the lifting device and the reaction force anchoring device are respectively installed at the two opposite ends and the two opposite ends of the two load-bearing brackets in the middle span, and the main section of the main beam in the middle span is hoisted by using the two lifting devices in the middle span;
[0009] The lifting device and the reaction force anchoring device are respectively installed at the two opposite ends and the two opposite ends of the two load-bearing supports of the side span, and the main section of the main beam of the side span is lifted by using the two lifting devices of the side span.
[0010] In some embodiments, the load-bearing support comprises a Bailey beam support.
[0011] Compared with the prior art, the steel bridge construction structure provided by the utility model has at least one of the following beneficial effects:
[0012] 1. Install load-bearing brackets on the pier caps to make full use of the existing bearing capacity of the pier caps. Then, through simple lifting devices and reaction anchoring devices, it is possible to achieve in-situ lifting or demolition of large-tonnage steel bridges, with obvious advantages in construction period and economy.
[0013] 2. Bailey beam support, which has the advantages of large bearing capacity, strong structural rigidity, long fatigue life, etc.; and Bailey beam support can be formed into temporary supports of various types and uses according to different spans required in practice, and has the characteristics of few components, light weight and low cost.
[0014] 3. The lifting device includes a jack and lifting steel bars. The jack is installed on the load-bearing bracket. The main section of the main beam is lifted by the lifting steel bars. The lifting steel bars of adjacent lifting devices connect the jack and the main section of the main beam.
[0015] 4. The reaction force anchoring device includes anchor piles and reaction force steel bars. The anchor piles are fixed on the ground. The reaction force steel bars connect the load-bearing bracket and the anchor piles to reversely offset the force of the jack to prevent the load-bearing bracket from tilting, which will cause the main section of the main beam to hit the pier, causing property losses and delaying the construction period.
[0016] 5. The steel bridge construction structure makes full use of the bearing capacity of the existing piers, has a large load-lifting capacity, and truly realizes the lifting of large sections, which can simplify the construction process. Compared with the small section assembly of conventional tower cranes or truck cranes, it has low technical difficulty, low risk, and a fast construction period. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.
[0018] Figure 1 It is a structural diagram of a steel bridge construction structure;
[0019] Figure 2 It is a structural diagram of the mid-span steel bridge construction;
[0020] Figure 3 It is a structural diagram of the side span steel bridge construction.
[0021] Description of Figure Numbers:
[0022] Main beam segment 1, load-bearing support 11, lifting device 12, jack 121, lifting steel bar 122, reaction force anchoring device 13, anchor pile 131, reaction force steel bar 132, main beam main section 2, pier column cap 3. DETAILED DESCRIPTION
[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.
[0024] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".
[0025] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0026] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0027] In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the scope of protection of the utility model.
[0028] refer to Figure 1 The utility model provides a steel bridge construction structure, which includes a main beam segment 1 and a main beam segment 2. The steel bridge construction structure includes a load-bearing support 11, a lifting device 12, and a reaction force anchoring device 13. The load-bearing support 11 is installed on the main beam segment 1, and the main beam segment 1 is installed on the pier column base 3; the lifting device 12 is installed at the end of the load-bearing support 11 and connected to the end of the main beam segment 2, which is suitable for lifting the main beam segment 2; the reaction force anchoring device 13 is connected to the other end of the load-bearing support 11, and is used to offset the reaction force of the lifting device 12.
[0029] In this embodiment, a simple load-bearing support 11 is built on the pier cap 3 to fully utilize the existing bearing capacity of the pier cap 3. Then, through a simple lifting device 12 and a reaction anchor device 13, the in-situ lifting or demolition of a large-tonnage steel bridge can be achieved, and the construction period and economic advantages are obvious.
[0030] Specifically, the steel bridge includes a main beam segment 1 and a main beam segment 2, and the main beam segment 1 can be prefabricated in advance. The installation method of the main beam segment 1 is not further limited in this application. It can be hoisted onto the pier pedestal 3 by a crane, or a hoisting bracket can be built to hoist the main beam segment 1 onto the pier pedestal 3. This is easy to implement for those skilled in the art, and this application will not be further elaborated here. A lifting device 12 and the reaction force anchoring device 13 are respectively installed at both ends of the load-bearing bracket 11. The load-bearing bracket 11 is mainly used to install the lifting device 12 and the reaction force anchoring device 13 required for subsequent assembly. The lifting device 12 is connected to the end of the main beam segment 2, and the reaction force anchoring device 13 is connected to the anchor pile 131 and the load-bearing bracket 11. The steel bridge construction structure utilizes the load-bearing bracket 11 and the lifting device 12, which has a simple structure and can be used for the lifting and installation of the steel main beam bridge and the removal of the dropped beam at the same time. It also makes full use of the bearing capacity of the existing piers, has a large load-lifting capacity, and truly realizes the lifting of large sections, which can simplify the construction process. Compared with the small-section assembly of conventional tower cranes or truck cranes, it has low technical difficulty, low risk, and a fast construction period.
[0031] Furthermore, the lifting device 12 includes a jack 121 and a lifting steel bar 122. The jack 121 is installed on the load-bearing bracket 11, and the lifting steel bar 122 connects the jack 121 and the end of the main beam main section 2. It is worth noting that the lifting device 12 includes but is not limited to the use of the jack 121, and other light and small lifting equipment can also be used, such as a float, a hoisting hoist, a winch, etc., which are all alternative equipment that can be easily thought of by those skilled in the art.
[0032] Furthermore, the reaction force anchoring device 13 includes an anchor pile 131 and a reaction force steel bar 132, wherein the anchor pile 131 is fixedly installed on the ground, and the reaction force steel bar 132 connects the load-bearing support 11 and the anchor pile 131. In this embodiment, the reaction force anchoring device 13 includes an anchor pile 131 and a reaction force steel bar 132, wherein the anchor pile 131 is fixedly installed on the ground, and the reaction force steel bar 132 connects the load-bearing support 11 and the anchor pile 131, and is used to reversely offset the force of the jack 121 lifting the main section 2 of the main beam, and prevent the load-bearing support 11 from tilting, thereby causing the main section 2 of the main beam to hit the pier, causing property losses and delaying the construction period. Specifically, a lifting device 12 and a reaction anchor device 13 are respectively installed at both ends of adjacent load-bearing supports 11. The lifting device 12 on the adjacent load-bearing supports 11 is connected to the end of the main section 2 of the main beam through the lifting steel bar 122. The reaction steel bar 132 on the reaction anchor device 13 is fixedly connected to the anchor pile 131 and the load-bearing support 11, so as to offset the force generated by the lifting device 12 lifting the main section 2 of the main beam and prevent the load-bearing support 11 from moving.
[0033] Furthermore, lifting devices 12 and reaction anchoring devices 13 are respectively installed at the opposite ends and the two load-bearing supports 11 of the middle span, and the two lifting devices 12 of the middle span are used to lift the main section 2 of the main beam of the middle span; lifting devices 12 and reaction anchoring devices 13 are respectively installed at the opposite ends and the two load-bearing supports 11 of the side span, and the two lifting devices 12 of the side span are used to lift the main section 2 of the main beam of the side span.
[0034] Furthermore, the load-bearing support 11 includes a Bailey beam support, which has the advantages of large bearing capacity, strong structural rigidity, and long fatigue life. Moreover, the Bailey beam support can be composed of various types and various uses of temporary supports according to different spans actually required, and has the characteristics of few components, light weight, and low cost. The Bailey beam support can be temporarily built on the main beam segment 1, or it can be built on the ground and then hoisted onto the main beam segment 1 by a crane, which is not limited in this application.
[0035] Furthermore, during the construction of the steel bridge, the main beam segment 1 is first installed on the pier cap 3. The load-bearing support 11 is then installed on the main beam segment 1. The lifting device 12 and the reaction anchor device 13 are then installed on the load-bearing support 11, and the main beam segment 2 is lifted using the lifting device 12 on the adjacent load-bearing support 11. Finally, the main beam segment 2 and the main beam segment 1 are aligned and installed. After the main beam segment 2 is in place, the elevation of the main beam segment 2 is fine-tuned, and the main beam segment 2 and the main beam segment 1 are welded. After welding the main beam segment 2 and the main beam segment 1, the load-bearing support 11 needs to be disassembled. The Bailey beam support is easy to disassemble, saving time and effort.
[0036] Preferably, reference Figure 2 and Figure 3 , first assemble the main beam section 2 of the middle span, and then assemble the main beam section 2 of the side span, reduce the number of reaction anchor devices 13 used, and improve engineering efficiency. Specifically, the lifting device 12 and the reaction anchor device 13 are respectively installed at the opposite ends and opposite ends of the two load-bearing supports 11 of the middle span, that is, each load-bearing support 11 is installed with a lifting device 12 and a reaction anchor device 13, and the lifting device 12 and the reaction anchor device 13 are respectively located at the two ends of each load-bearing support 11, and the two lifting devices 12 of the middle span are used to lift the main beam section 2 of the middle span; after the main beam section 2 of the middle span is installed, the lifting device 12 and the reaction anchor device 13 are respectively installed at the opposite ends and opposite ends of the two load-bearing supports 11 of the side span, and the two lifting devices 12 of the side span are used to lift the main beam section 2 of the side span, that is, only one set of reaction anchor devices 13 and lifting devices 12 need to be installed on the load-bearing support 11 to complete the installation of this main beam section 2, and then the main beam section 2 of the subsequent side span is installed in a similar direction. The subsequent lifting device 12 can be disassembled for use, or a new one can be used and set up separately. Due to the simple properties of the jack 121, low-cost assembly can be achieved.
[0037] It is worth noting that the construction can also be started from the main beam section 2 of the side span, and assembled in sequence toward the end away from the main beam section 2. The construction can also be started from the main beam sections 2 of the side spans on both sides at the same time to speed up the construction period. The main beam section 2 is prefabricated at the same time or before the lifting device 12 and the reaction force anchoring device 13 are installed on the load-bearing support 11. The main beam section 2 is assembled in situ on the ground.
[0038] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. A steel bridge construction structure, the steel bridge comprising a main beam segment and a main beam main section, characterized in that: include: A load-bearing bracket, wherein the load-bearing bracket is installed on the main beam segment, and the main beam segment is installed on the pier cap; A lifting device, which is installed at the end of the load-bearing bracket and connected to the end of the main section of the main beam, and is suitable for lifting the main section of the main beam; A reaction force anchoring device, wherein the reaction force anchoring device is connected to the other end of the load-bearing bracket and is used to offset the reaction force of the lifting device.
2. A steel bridge construction structure according to claim 1, characterized in that: The lifting device and the reaction force anchoring device are respectively installed at both ends of the load-bearing support, the lifting device is connected to the end of the main section of the main beam, and the reaction force anchoring device is connected to the anchor pile and the load-bearing support.
3. A steel bridge construction structure according to claim 2, characterized in that: The lifting device comprises a jack and lifting steel bars, wherein the jack is installed on the load-bearing bracket, and the lifting steel bars connect the jack and the end of the main section of the main beam.
4. A steel bridge construction structure according to claim 2, characterized in that: The reaction force anchoring device comprises an anchor pile and a reaction force steel bar. The anchor pile is fixedly installed on the ground, and the reaction force steel bar connects the load-bearing support and the anchor pile.
5. A steel bridge construction structure according to claim 1, characterized in that: The lifting devices and the reaction force anchoring devices are respectively installed at the two opposite ends and the two opposite ends of the two load-bearing brackets of the middle span, and the main section of the main beam of the middle span is hoisted by using the two lifting devices of the middle span; The lifting devices and the reaction force anchoring devices are respectively installed at the two opposite ends and the two opposite ends of the two load-bearing supports of the side span, and the main section of the main beam of the side span is lifted by using the two lifting devices of the side span.
6. A steel bridge construction structure according to claim 1, characterized in that: The load-bearing support comprises a Bailey beam support.