A method of installing a box beam reinforcement

Abstract

The application discloses a box beam reinforcement mounting method, which solves the technical problem of heavy reinforcement mounting in the box beam in the prior art. The box beam comprises a beam body provided with a plurality of inner cavities, manholes and lifting holes and a reinforcement, the inner cavities are communicated with corresponding manholes and lifting holes, each inner cavity is provided with a first bolt hole in advance, and the reinforcement is mounted on the cavity wall of the inner cavity. The reinforcement mounting steps comprise the following steps: firstly, the lifting wire of a lifting device is passed through the lifting hole of the beam body into the inner cavity, and the lifting wire is connected with the reinforcement; secondly, the reinforcement is lifted to a target mounting position by using the lifting device; and finally, the lifting wire is removed from the reinforcement. The reinforcement is lifted from the inside of the box beam to the mounting position, so that the mounting efficiency is improved, and the safety of the operator during installation is ensured. The lifting wire is directly connected with the first bolt hole through the lifting hole, so that the reinforcement is directly attached to the target position, the lifting stability is improved, the subsequent adjustment step is omitted, and the mounting position is more accurate.

Description

Technical Field

[0001] This application belongs to the field of steel structure manufacturing technology, specifically relating to an installation method for a box beam reinforcement. Background Technology

[0002] Long-span steel bridges spanning rivers and seas are typically installed using a large-segment hoisting method. These large segments are designed with large lifting lugs on the bridge deck and include temporary corbel structures at their ends. These corbel structures connect the cantilever beams to the suspended beams and transfer loads from the suspended beams. Circumferential joint adjustment is used for the corbel structure, which consists of corbel members, pin hinge structures, support structures, and jack structures. The large lifting lugs and temporary corbel structures are usually bolted to the top plate of the box girder for easy reuse; for example... Figures 1-3 As shown, a box girder internal reinforcement is connected below the large lifting lugs and temporary corbels. The box girder internal reinforcement is bolted to the middle web plate, top plate, and transverse diaphragms inside the box girder below the lifting lugs and temporary corbels. Since the lifting lugs are installed on the top plate, the lifting force of the lifting lugs only acts on the top plate, which can easily cause deformation of the box girder structure. Therefore, reinforcement is added to connect the top plate and the lifting lugs to balance the lifting force of the lifting lugs from the top plate to the top plate, middle web plate, and transverse diaphragms, thereby reinforcing the bridge deck lifting lugs and corbel structure.

[0003] Because the bolted reinforcement components are too large and heavy, and are installed at a high position inside the beam, the traditional manual installation method is extremely difficult and poses great safety hazards. At the same time, manual handling is also quite difficult. Summary of the Invention

[0004] To address the current technical shortcomings of heavy bolted reinforcement components in box girders, which are difficult to install manually and pose significant safety hazards, this application provides a method for installing box girder reinforcement components.

[0005] This application provides a method for installing a stiffener in a box girder. The box girder includes a girder body and a stiffener. The girder body has multiple cavities, manholes, and hoisting holes. The number of cavities, manholes, and hoisting holes is the same. The multiple cavities are arranged sequentially along the length of the girder body. Each cavity communicates with a corresponding manhole and hoisting hole. Each cavity has a pre-installed stiffener. The stiffener is installed on the cavity wall of the cavity. The stiffener has a first bolt hole. The installation method includes:

[0006] First, install the middle reinforcing member onto the beam body, and then install the end reinforcing members onto the beam body; the steps for installing the reinforcing members onto the beam body are as follows:

[0007] Step 1: Pass the hoisting wire of the hoisting device through the hoisting hole of the beam body into the inner cavity, and connect the hoisting wire to the reinforcing member;

[0008] Step 2: Use the hoisting device to hoist the reinforcing member to the target installation position and connect the reinforcing member to the cavity wall of the beam body;

[0009] Step 3: Remove the suspension wire and reinforcement.

[0010] In some embodiments, the reinforcing member is provided with a second bolt hole; the step of installing the reinforcing member on the beam body before step 1 further includes: opening a connection hole in the beam body for corresponding to the second bolt hole of the reinforcing member.

[0011] In some embodiments, step 2 specifically includes: using the hoisting device to hoist the reinforcing member to the target installation position, positioning the drill rod of the drilling machine through the second bolt hole of the reinforcing member, then opening a connecting hole in the cavity wall of the beam body, and passing the threaded part through the second bolt hole and the connecting hole to connect the reinforcing member to the cavity wall of the beam body.

[0012] In some embodiments, the beam body includes a top plate, a bottom plate, a web plate, and two spaced-apart transverse diaphragms. Multiple web plates are provided, spaced apart. The transverse diaphragms connect the top plate and the bottom plate. The top plate, bottom plate, and two transverse diaphragms together form a beam cavity. Multiple web plates are sequentially spaced along the length of the beam body within the beam cavity to divide it into multiple inner cavities. The top plate has the hoisting hole, and the transverse diaphragms have the manhole. The reinforcing member has a first connecting surface, a second connecting surface, and a third connecting surface. The first connecting surface mates with the top plate, the second connecting surface mates with the web plate, and the third connecting surface mates with the transverse diaphragms. Step 2 specifically includes:

[0013] The lifting device is used to lift the reinforcing member to the target installation position so that the first connecting surface mates with the top surface, the second connecting surface mates with the web plate, and the third connecting surface mates with the transverse diaphragm; the reinforcing member located at the target installation position is then connected to the middle web plate, the transverse diaphragm, and the top plate in sequence.

[0014] In some embodiments, the box girder further includes lifting lugs connected to the top plate, and the sequential connection of the reinforcing member located at the target installation position to the web plate, the diaphragm, and the top plate specifically includes:

[0015] The reinforcing member located at the target mounting position is connected to the middle web plate and the transverse diaphragm in sequence;

[0016] The reinforcing member connected to the web and the diaphragm is simultaneously connected to the top plate and the lifting lug.

[0017] In some embodiments, the reinforcing member includes a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate, the second connecting plate, and the third connecting plate are arranged at an angle to each other. The second connecting plate and the third connecting plate are both connected to the first connecting plate, and the third connecting plate is connected to the second connecting plate. The surface of the first connecting plate forms a first connecting surface, the surface of the second connecting plate forms a second connecting surface, and the surface of the third connecting plate forms a third connecting surface. The first connecting plate is provided with the first bolt hole.

[0018] The reinforcing member also includes a plurality of reinforcing plates, which are spaced apart and connected to a first connecting plate and a second connecting plate.

[0019] In some embodiments, the hoisting device includes a lifting device and a support detachably connected to the beam body, the lifting device being connected to the support;

[0020] Before step 1, the step of installing the reinforcing member on the beam body further includes: connecting the hoisting device to the beam body;

[0021] After step 3, the step of installing the reinforcing member on the beam body further includes: removing the hoisting device from the beam body.

[0022] In some embodiments, connecting the hoisting device to the beam body specifically includes:

[0023] Adjust the position of the hoisting device to the designed position of the beam body so that the hoisting line is aligned with the hoisting hole;

[0024] The hoisting device is installed at the designed position on the beam body.

[0025] In some embodiments, step 1 specifically includes passing the hoisting wire of the hoisting device through the hoisting hole of the beam body into the inner cavity, then through the first bolt hole of the reinforcing member, and fixing the end of the hoisting wire with a rope clamp to connect the hoisting wire to the reinforcing member.

[0026] In some embodiments, after step 3, the step of installing the stiffener onto the beam body further includes:

[0027] The threaded part is inserted into the hoisting hole and the first bolt hole to connect the beam body and the reinforcement.

[0028] According to the installation method of the box girder reinforcement provided in the embodiments of this application, the box girder includes a beam body and reinforcement. The beam body has multiple inner cavities, manholes, and hoisting holes. The number of inner cavities, manholes, and hoisting holes is the same. Multiple inner cavities are arranged sequentially along the length direction of the beam body. The inner cavities are connected to the corresponding manholes and hoisting holes. Each inner cavity is pre-installed with a reinforcement. The reinforcement is installed on the cavity wall of the inner cavity. The reinforcement has a first bolt hole. The installation method includes: first, installing the middle reinforcement on the beam body, and then installing the end reinforcement on the beam body. The steps of installing the reinforcement on the beam body are: Step 1, passing the hoisting wire of the hoisting device through the hoisting hole of the beam body to the inner cavity, and connecting the hoisting wire to the reinforcement; Step 2, using the hoisting device to hoist the reinforcement to the target installation position, and connecting the reinforcement to the cavity wall of the beam body; Step 3, removing the hoisting wire from the reinforcement.

[0029] This application includes the following beneficial effects:

[0030] (1) The installation method of this application first pre-places the reinforcing member in the inner cavity of the box beam, then passes the hoisting wire of the hoisting device through the hoisting hole, and the hoisting wire enters the inner cavity. Then the hoisting wire is connected to the reinforcing member in the inner cavity, so that the hoisting device is connected to the reinforcing member, that is, the lifting end of the hoisting device is connected to the reinforcing member. The reinforcing member can be lifted in the inner cavity by the hoisting device and transported from the inside of the box beam until the reinforcing member is in the installation position. Compared with the prior art, this application can replace the traditional pure manual installation, improve the installation efficiency, and ensure the safety of the operator during installation.

[0031] (2) The installation method of this application involves passing the hoisting wire through the hoisting hole provided on the beam body to the inner cavity of the beam body, and then through the first bolt hole provided on the pre-installed reinforcing member inside the inner cavity, connecting the hoisting wire to the reinforcing member. This allows the hoisting device to pass through both the first bolt hole and the hoisting hole simultaneously, and connect to the reinforcing member within the inner cavity of the beam body. Since the hoisting wire of the hoisting device passes through the first bolt hole and is connected to the reinforcing member, the lifting end is located at the position of the first bolt hole. When the hoisting device performs a hoisting operation, the hoisting wire is tightened, and the reinforcing member connected to the hoisting wire moves along the connection between the first bolt hole and the hoisting hole along with the hoisting wire. The reinforcement is moved to bring it closer to the lifting hole within the beam body cavity until it is lifted to the target installation position. Only a lifting line is used to connect the reinforcement, unlike conventional lifting devices that use hooks. This increases lifting stability and prevents slippage. Furthermore, the lifting line passes directly through the target installation position and connects to the installation location. Unlike hooks, which can only hook the edge of the reinforcement, the lifting line allows for precise positioning, directly bringing the reinforcement into contact with the target position. This results in a more accurate lifting orientation; after lifting, the lifting hole and the first bolt hole are coaxial, eliminating subsequent adjustment steps and making the installation position more precise. Attached Figure Description

[0032] Figure 1The diagram shows the relative positions of the lugs, brackets, box beams, and reinforcing members in embodiments of this application.

[0033] Figure 2 It shows Figure 1 Sectional view of C1-C1.

[0034] Figure 3 It shows Figure 1 Sectional view of C2-C2.

[0035] Figure 4 A schematic diagram of the reinforcing member in an embodiment of this application is shown.

[0036] Figure 5 A schematic diagram of the reinforcement component pre-positioned in an embodiment of this application is shown.

[0037] Figure 6 A diagram showing the connection between the suspension wire and the reinforcing member in an embodiment of this application is provided.

[0038] Figure 7 A lifting diagram of the reinforcing member in an embodiment of this application is shown.

[0039] Figure 8 A diagram showing the reinforcement member being hoisted into place in an embodiment of this application is shown.

[0040] Explanation of reference numerals in the attached drawings: 100, lifting lug; 200, middle web plate; 300, transverse diaphragm; 400, bottom plate; 500, top plate; 600, side web plate; 700, reinforcing member;

[0041] 310. Manhole;

[0042] 710. First connecting plate; 720. Second connecting plate; 730. Third connecting plate; 740. Reinforcing plate;

[0043] 800. Lifting equipment;

[0044] 810. Support frame; 820. Lifting device;

[0045] 821. Suspension line; 822. Rope clamp. Detailed Implementation

[0046] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0047] This application provides an installation method for box girder reinforcement components to improve installation efficiency and ensure the safety of operators during installation.

[0048] Please see Figure 5 , Figure 7 as well as Figure 8 The present application provides an installation method for a box girder reinforcement 700. The box girder includes a girder body and a reinforcement 700. The girder body has multiple inner cavities, manholes 310, and hoisting holes. The number of inner cavities, manholes 310, and hoisting holes is the same, so that operators can enter the inner cavity through the manholes 310 to install the reinforcement 700 in the inner cavity. Multiple inner cavities are arranged sequentially along the length of the girder body. The inner cavity is connected to the corresponding manhole 310 and hoisting hole. Each inner cavity is pre-installed with a reinforcement 700. The reinforcement 700 is installed on the cavity wall of the inner cavity. The reinforcement 700 has a first bolt hole. The installation method includes: first installing the middle reinforcement 700 on the girder body, and then installing the end reinforcement 700 on the girder body. The steps for installing the reinforcement 700 on the girder body are as follows:

[0049] Step 1: Pass the hoisting wire 821 of the hoisting device 800 through the hoisting hole of the beam body into the inner cavity, and connect the hoisting wire 821 to the reinforcing member 700;

[0050] Step 2: Use hoisting device 800 to hoist the reinforcing member 700 to the target installation position and connect the reinforcing member 700 to the cavity wall of the beam body;

[0051] Step 3: Remove the suspension wire 821 and the reinforcing member 700.

[0052] In some embodiments, the box girder has multiple inner cavities, which are closed cavities. The inner cavities are arranged sequentially along the length of the box girder to form inner cavity groups, and multiple inner cavity groups are arranged sequentially along the width of the box girder. In some embodiments, a manhole 310 is provided on the side of the inner cavity near the bottom, and a hoisting hole is provided on the top of the inner cavity. In some embodiments, each inner cavity is provided with a corresponding manhole 310 and a hoisting hole. In some embodiments, during the manufacturing process of the box girder assembly, before the top plate 500 is installed, the reinforcing member 700 is hoisted by a workshop crane and pre-placed in the inner cavity. In some embodiments, the reinforcing member 700 is pre-placed in the inner cavity and placed on the bottom plate 400 below the target installation position. In some embodiments, after the top plate 500 is installed, a hoisting hole is opened on the top plate 500 so that the hoisting hole is accurately opened at the target position.

[0053] In some embodiments, the method for installing the reinforcing member 700 on the beam body is to use a hoisting device 800 provided outside the box beam to lift the reinforcing member 700 inside the box beam to the target installation position, so as to save manpower and improve installation efficiency.

[0054] In some embodiments, the reinforcing member 700 is provided with a second bolt hole. Before step 1, the step of installing the reinforcing member 700 on the beam body further includes: opening a connection hole in the beam body corresponding to the second bolt hole of the reinforcing member 700, so as to be positioned by the second bolt hole of the reinforcing member 700 and connecting the reinforcing member 700 to the beam body; in some embodiments, the web plate 200 of the reinforcing member 700 is provided with a second bolt hole. Before step 1, the step of installing the reinforcing member 700 on the beam body further includes: opening a connection hole in the web plate 200 of the beam body corresponding to the second bolt hole of the reinforcing member 700.

[0055] In some embodiments, step 2 specifically includes: using a hoisting device 800 to hoist the reinforcing member 700 to the target installation position; the drill rod of the drilling machine passing through the second bolt hole of the reinforcing member 700 for positioning; then, drilling a connecting hole in the cavity wall of the beam body; and passing a threaded component through the second bolt hole and the connecting hole to connect the reinforcing member 700 to the cavity wall of the beam body, thus performing a preliminary connection between the beam body and the reinforcing member 700; in some embodiments, step 2 specifically includes: the hoisting device 800 being connected to the first bolt hole by a hoisting wire 821, and hoisting the component located at the bottom... The reinforcing member 700, which is attached to the top plate 500, the middle web plate 200, and the transverse diaphragm 300, is lifted and moved close to the lifting hole along the connection direction between the first bolt hole and the lifting hole. When it reaches the target installation position, the reinforcing member 700 is attached to the top plate 500, the middle web plate 200, and the transverse diaphragm 300. The second bolt hole opened on the reinforcing member 700 is used to locate the connection point. The second bolt hole passes through the cavity wall of the beam body. Then, a connection hole is opened in the cavity wall of the beam body. The threaded part passes through the second bolt hole and the connection hole to connect the reinforcing member 700 to the cavity wall of the beam body.

[0056] In some embodiments, the beam body includes a top plate 500, a bottom plate 400, a web plate 200, and a plurality of spaced transverse diaphragms 300. Multiple intermediate web plates are provided, spaced apart. The transverse diaphragms 300 connect the top plate 500 and the bottom plate 400. The top plate 500, the bottom plate 400, and the two transverse diaphragms 300 together form a beam cavity. Multiple intermediate web plates 200 are sequentially spaced along the length of the beam body within the beam cavity to divide the beam cavity into multiple inner cavities. The top plate 500 has a hoisting hole, and the transverse diaphragms 300 have manholes 310. The reinforcing member 700 has a first connecting surface, a second connecting surface, and a third connecting surface. The first connecting surface mates with the top plate 500, the second connecting surface mates with the middle web plate 200, and the third connecting surface mates with the transverse diaphragm 300. Step 2 specifically includes: using a hoisting device 800 to hoist the reinforcing member 700 to the target installation position, so that the first connecting surface mates with the top surface, the second connecting surface mates with the middle web plate 200, and the third connecting surface mates with the transverse diaphragm 300; sequentially connecting the reinforcing member 700 located at the target installation position with the middle web plate 200, the transverse diaphragm 300, and the top plate 500, so that the reinforcing member 700 is installed in the designed position; in some embodiments, the beam body includes a top plate 500, a bottom plate 400, and multiple spaced components. A central web 200 and multiple spaced transverse diaphragms 300 are provided, the transverse diaphragms 300 connecting a top plate 500 and a bottom plate 400. The top plate 500, bottom plate 400, and multiple transverse diaphragms 300 enclose multiple beam cavities. In some embodiments, the beam body includes a top plate 500, a bottom plate 400, side webs 600, multiple spaced central webs 200, and multiple spaced transverse diaphragms 300. There are two side webs 600, one end connected to the top plate 500 and the other end connected to the bottom plate 400. In some embodiments, the bottom plate 400 includes a straight bottom plate 400 and an inclined bottom plate 400, the straight bottom plate 400 connecting to the inclined bottom plate 400. In some embodiments, the diaphragm 300 is connected to the top plate 500, the bottom plate 400, and the side web plate 600. The top plate 500, the bottom plate 400, the side web plate 600, and the multiple diaphragms 300 together form multiple beam cavities. Multiple intermediate web plates 200 are sequentially spaced within the beam cavity along the length of the beam body to divide the beam cavity into multiple inner cavities. The top plate 500 is provided with a hoisting hole, the diaphragm 300 is provided with a manhole 310, and the reinforcing member 700 is provided with a first connecting surface, a second connecting surface, and a third connecting surface. The first connecting surface mates with the top plate 500, the second connecting surface mates with the intermediate web plate 200, and the third connecting surface mates with the diaphragm 300.

[0057] Please see Figures 1-3In some embodiments, the box girder further includes a lifting lug 100 connected to the top plate 500, and a reinforcing member 700 located at the target installation position is sequentially connected to the web plate 200, the transverse diaphragm 300, and the top plate 500. Specifically, this includes: sequentially connecting the reinforcing member 700 located at the target installation position to the web plate 200 and the transverse diaphragm 300; and simultaneously connecting the reinforcing member 700 connected to the web plate 200 and the transverse diaphragm 300 to the top plate 500 and the lifting lug 100. The 00 connection is arranged so that the lifting force acting on the lifting lug 100 is distributed by the reinforcing member 700 to the middle web plate 200 and the transverse diaphragm 300; in some embodiments, the top plate 500 is connected to the top of the lifting lug 100. After the reinforcing member 700 is connected to the middle web plate 200 and the transverse diaphragm 300 in sequence, the lifting lug 100 is set at the location of the lifting hole. The reinforcing member 700, the top plate 500 and the lifting lug 100 are drilled at the same time with a drilling machine and bolted together.

[0058] Please see Figure 4 In some embodiments, the reinforcing member 700 includes a first connecting plate 710, a second connecting plate 720, and a third connecting plate 730. The first connecting plate 710, the second connecting plate 720, and the third connecting plate 730 are arranged at an angle to each other. The second connecting plate 720 and the third connecting plate 730 are both connected to the first connecting plate 710, and the third connecting plate 730 is connected to the second connecting plate 720. The surface of the first connecting plate 710 forms a first connecting surface, the surface of the second connecting plate 720 forms a second connecting surface, and the surface of the third connecting plate 730 forms a third connecting surface. The first connecting plate 710 is provided with a first bolt hole. In some embodiments, the first connecting plate 710... 10. The second connecting plate 720 and the third connecting plate 730 are perpendicular to each other and connected; in some embodiments, the reinforcing member 700 further includes a plurality of reinforcing plates 740, which are spaced apart and connected to the first connecting plate 710 and the second connecting plate 720 to further enhance the strength of the reinforcing member 700; in some embodiments, the reinforcing member 700 further includes a plurality of reinforcing plates 740 parallel to the third connecting plate 730, which are connected to the first connecting plate 710 and the second connecting plate 720; in some embodiments, the second bolt hole is located in the second connecting plate 720; in some embodiments, the reinforcing plate 740 is wedge-shaped.

[0059] In some embodiments, the hoisting device 800 includes a lifting tool 820 and a bracket 810 detachably connected to the beam body. The lifting tool 820 is connected to the bracket 810 to install a small lifting tool 820. Before step 1, the step of installing the reinforcing member 700 to the beam body further includes: connecting the hoisting device 800 to the beam body. After step 3, the step of installing the reinforcing member 700 to the beam body further includes: removing the hoisting device 800 from the beam body. In some embodiments, the bracket 810 is an "L"-shaped bracket 810, with the bottom of the vertical rod of the "L"-shaped bracket 810 fixedly connected to the vicinity of the hoisting hole, and the lifting tool 820 is installed on the horizontal rod of the "L"-shaped bracket 810. In some embodiments, the lifting tool 820 is a small electric hoist.

[0060] In some embodiments, connecting the hoisting device 800 to the beam body specifically includes: adjusting the position of the hoisting device 800 to the designed position of the beam body, so that the hoisting line 821 is directly opposite the hoisting hole; installing the hoisting device 800 at the designed position of the beam body so that the hoisting line 821 is perpendicular to the radial direction of the hoisting hole, which facilitates the hoisting of the hoisting device 800; in some embodiments, the hoisting device 800 is connected to the top plate 500, the bracket 810 is installed near the hoisting hole, and the lifting device 820 installed on the bracket 810 is directly opposite the hoisting hole, and the hoisting line 821 reciprocates along the radial direction perpendicular to the hoisting hole.

[0061] Please see Figure 6 In some embodiments, step 1 specifically includes passing the hoisting wire 821 of the hoisting device 800 through the hoisting hole of the beam body into the inner cavity, and then through the first bolt hole of the reinforcing member 700, and fixing the tail end of the hoisting wire 821 with the rope clamp 822 to connect the hoisting wire 821 with the reinforcing member 700, so as to further fix the hoisting wire 821 and the reinforcing member 700. In some embodiments, step 1 specifically includes passing the hoisting wire 821 of the hoisting device 800 through the hoisting hole of the beam body into the inner cavity, and then through the first bolt hole of the reinforcing member 700, folding the hoisting wire 821 on the side of the reinforcing member 700 away from the hoisting hole, and fixing the tail end of the hoisting wire 821 with the rope clamp 822 to connect and fix the tail end of the hoisting wire 821 with the reinforcing member 700.

[0062] In some embodiments, after step 3, the step of installing the reinforcement 700 on the beam body further includes: extending a threaded member into the hoisting hole and the first bolt hole to connect the beam body and the reinforcement 700, so that the hoisting hole is further converted into a bolt hole, avoiding the need to open additional holes.

[0063] The installation method of the box girder reinforcement 700 of this application is described in detail below:

[0064] When the reinforcing member 700 of this application is installed in the inner cavity of the box girder, the middle reinforcing member 700 is first installed on the beam body, and then the end reinforcing members 700 are installed on the beam body. The beam body includes a top plate 500, a bottom plate 400, multiple spaced-apart web plates 200, and multiple spaced-apart transverse diaphragms 300. The transverse diaphragms 300 connect the top plate 500 and the bottom plate 400. The top plate 500, the bottom plate 400, and the multiple transverse diaphragms 300 enclose multiple beam cavities. The multiple web plates 200 are sequentially spaced along the length of the beam body in the beam cavity to divide the beam cavity into multiple inner cavities. The top plate 500 is provided with a hoisting hole, and the transverse diaphragms 300 are provided with manholes 310. The reinforcing member 700 is provided with a first connecting surface, a second connecting surface, and a third connecting surface. The first connecting surface mates with the top plate 500, the second connecting surface mates with the web plates 200, and the third connecting surface mates with the transverse diaphragms 300. The 700 includes a first connecting plate 710, a second connecting plate 720, and a third connecting plate 730. The first connecting plate 710, the second connecting plate 720, and the third connecting plate 730 are arranged at an angle to each other. The second connecting plate 720 and the third connecting plate 730 are both connected to the first connecting plate 710, and the third connecting plate 730 is connected to the second connecting plate 720. The surface of the first connecting plate 710 forms a first connecting surface, the surface of the second connecting plate 720 forms a second connecting surface, and the surface of the third connecting plate 730 forms a third connecting surface. The first connecting plate 710 has a first bolt hole. The reinforcing member 700 also includes multiple reinforcing plates 740, which are spaced apart and connected to the first connecting plate 710 and the second connecting plate 720. The reinforcing member 700 has a second bolt hole, and a connecting hole corresponding to the second bolt hole of the reinforcing member 700 is opened in the beam body.

[0065] The steps for installing the stiffener 700 onto the beam body are as follows:

[0066] Before installing the top plate 500, pre-install reinforcing members 700 in the inner cavity and attach them to the bottom plate 400, the transverse partition 300, and the middle web plate 200;

[0067] After the top plate 500 is installed, hoisting holes are made on the top plate 500;

[0068] The hoisting device 800 is installed near the hoisting hole. The hoisting device 800 includes a lifting device 820 and a bracket 810 detachably connected to the beam body. The lifting device 820 is connected to the bracket 810. The position of the hoisting device 800 is adjusted to the design position of the beam body. The hoisting device 800 is set close to the hoisting hole so that the hoisting line 821 is directly opposite the hoisting hole.

[0069] Step 1: Pass the hoisting wire 821 of the hoisting device 800 through the hoisting hole of the beam body into the inner cavity. The operator enters the inner cavity through the manhole 310, passes the hoisting wire 821 through the first bolt hole of the reinforcing member 700, folds the tail end of the hoisting wire 821, and fixes the tail end of the hoisting wire 821 with the rope clamp 822 to connect the hoisting wire 821 to the reinforcing member 700.

[0070] Step 2: Use the hoisting device 800 to hoist the reinforcing member 700 to the target installation position so that the first connecting surface mates with the top surface, the second connecting surface mates with the web plate, and the third connecting surface mates with the transverse diaphragm 300. The operator operates the drill rod of the drilling machine to pass through the second bolt hole of the reinforcing member 700 for positioning, and then opens a connecting hole in the cavity wall of the beam body. The threaded part passes through the second bolt hole and the connecting hole to connect the reinforcing member 700 to the cavity wall of the beam body. The second bolt hole is located in the second connecting plate 720. Then, the reinforcing member 700 is connected to the middle web plate 200. The operator connects the reinforcing member 700 to the web plate and the transverse diaphragm 300 in sequence.

[0071] Step 3: Remove the hoisting wire 821 and the reinforcing member 700. Simultaneously connect the reinforcing member 700 to the top plate 500 and the lifting lug 100 located on the top plate 500. Insert the threaded part into the hoisting hole and the first bolt hole to further connect the beam body and the reinforcing member 700. Then remove the hoisting device 800 from the beam body.

[0072] The installation method for the box girder stiffener of this application has at least the following advantages:

[0073] (1) The installation method of this application first pre-places the reinforcing member in the inner cavity of the box beam, then passes the hoisting wire of the hoisting device through the hoisting hole, and the hoisting wire enters the inner cavity. Then the hoisting wire is connected to the reinforcing member in the inner cavity, so that the hoisting device is connected to the reinforcing member, that is, the lifting end of the hoisting device is connected to the reinforcing member. The reinforcing member can be lifted in the inner cavity by the hoisting device and transported from the inside of the box beam until the reinforcing member is in the installation position. Compared with the prior art, this application can replace the traditional pure manual installation, improve the installation efficiency, and ensure the safety of the operator during installation.

[0074] (2) The installation method of this application involves passing the hoisting wire through the hoisting hole provided on the beam body to the inner cavity of the beam body, and then through the first bolt hole provided on the pre-installed reinforcing member inside the inner cavity, connecting the hoisting wire to the reinforcing member. This allows the hoisting device to pass through both the first bolt hole and the hoisting hole simultaneously, and connect to the reinforcing member within the inner cavity of the beam body. Since the hoisting wire of the hoisting device passes through the first bolt hole and is connected to the reinforcing member, the lifting end is located at the position of the first bolt hole. When the hoisting device performs a hoisting operation, the hoisting wire is tightened, and the reinforcing member connected to the hoisting wire moves along the connection between the first bolt hole and the hoisting hole along with the hoisting wire. The reinforcement is moved to bring it closer to the lifting hole within the beam body cavity until it is lifted to the target installation position. Only a lifting line is used to connect the reinforcement, unlike conventional lifting devices that use hooks. This increases lifting stability and prevents slippage. Furthermore, the lifting line passes directly through the target installation position and connects to the installation location. Unlike hooks, which can only hook the edge of the reinforcement, the lifting line allows for precise positioning, directly bringing the reinforcement into contact with the target position. This results in a more accurate lifting orientation; after lifting, the lifting hole and the first bolt hole are coaxial, eliminating subsequent adjustment steps and making the installation position more precise.

[0075] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0076] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0077] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0078] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0079] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for installing a box girder reinforcement, characterized in that, The box girder includes a girder body and reinforcing members. The girder body has multiple internal cavities, manholes, and hoisting holes. The number of internal cavities, manholes, and hoisting holes is the same. The multiple internal cavities are arranged sequentially along the length of the girder body. Each internal cavity communicates with the corresponding manhole and hoisting hole. Each internal cavity is pre-installed with the reinforcing member. The reinforcing member is installed on the cavity wall of the internal cavity and has a first bolt hole. The installation method includes: First, install the middle reinforcing member onto the beam body, and then install the end reinforcing members onto the beam body; the steps for installing the reinforcing members onto the beam body are as follows: Step 1: Pass the hoisting wire of the hoisting device through the hoisting hole of the beam body into the inner cavity, and connect the hoisting wire to the reinforcing member; Step 2: Use the hoisting device to hoist the reinforcing member to the target installation position and connect the reinforcing member to the cavity wall of the beam body; Step 3: Remove the suspension wire and reinforcing components; Specifically, step 1 includes passing the hoisting wire of the hoisting device through the hoisting hole of the beam body into the inner cavity, then through the first bolt hole of the reinforcing member, and fixing the end of the hoisting wire with a rope clamp to connect the hoisting wire to the reinforcing member. The beam body includes a top plate, a bottom plate, a web plate, and two spaced-apart transverse diaphragms. Multiple web plates are provided, spaced apart. The transverse diaphragms connect the top plate and the bottom plate. The top plate, bottom plate, and two transverse diaphragms together form a beam cavity. Multiple web plates are sequentially spaced along the length of the beam body within the beam cavity to divide it into multiple inner cavities. The top plate has a hoisting hole, and the transverse diaphragms have manholes. The reinforcing member has a first connecting surface, a second connecting surface, and a third connecting surface. The first connecting surface mates with the top plate, the second connecting surface mates with the web plate, and the third connecting surface mates with the transverse diaphragms. Step 2 specifically includes: using the hoisting device to hoist the reinforcing member to the target installation position, so that the first connecting surface mates with the top surface, the second connecting surface mates with the middle web plate, and the third connecting surface mates with the transverse diaphragm; sequentially connecting the reinforcing member located at the target installation position to the middle web plate, the transverse diaphragm, and the top plate; the hoisting device includes a lifting tool and a bracket detachably connected to the beam body, the lifting tool being connected to the bracket; Before step 1, the step of installing the reinforcing member on the beam body further includes: connecting the hoisting device to the beam body; After step 3, the step of installing the reinforcing member on the beam body further includes: removing the hoisting device from the beam body; After step 3, the step of installing the reinforcing member on the beam body further includes: extending the threaded member into the hoisting hole and the first bolt hole to connect the beam body and the reinforcing member.

2. The installation method of the box girder reinforcement according to claim 1, characterized in that, The reinforcing member is provided with a second bolt hole. Before step 1, the step of installing the reinforcing member on the beam body further includes: opening a connection hole in the beam body for corresponding to the second bolt hole of the reinforcing member.

3. The installation method of the box girder reinforcement according to claim 2, characterized in that, Step 2 specifically includes: using the hoisting device to hoist the reinforcing member to the target installation position, positioning the drill rod of the drilling machine through the second bolt hole of the reinforcing member, then opening a connecting hole in the cavity wall of the beam body, and passing the threaded part through the second bolt hole and the connecting hole to connect the reinforcing member to the cavity wall of the beam body.

4. The installation method of the box girder reinforcement according to claim 1, characterized in that, The box girder also includes lifting lugs connected to the top plate. The sequential connection of the reinforcing member located at the target installation position to the web plate, the diaphragm, and the top plate specifically includes: The reinforcing member located at the target mounting position is sequentially connected to the middle web plate and the transverse diaphragm; The reinforcing member connected to the middle web plate and the transverse diaphragm is simultaneously connected to the top plate and the lifting lug.

5. The installation method of the box girder reinforcement according to claim 1, characterized in that, The reinforcing member includes a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate, the second connecting plate, and the third connecting plate are arranged at an angle to each other. The second connecting plate and the third connecting plate are both connected to the first connecting plate, and the third connecting plate is connected to the second connecting plate. The surface of the first connecting plate forms a first connecting surface, the surface of the second connecting plate forms a second connecting surface, and the surface of the third connecting plate forms a third connecting surface. The first connecting plate is provided with the first bolt hole. The reinforcing member also includes a plurality of reinforcing plates, which are spaced apart and connected to a first connecting plate and a second connecting plate.

6. The installation method of the box girder reinforcement according to claim 1, characterized in that, Connecting the hoisting device to the beam body specifically includes: Adjust the position of the hoisting device to the designed position of the beam body so that the hoisting line is aligned with the hoisting hole; The hoisting device is installed at the designed position on the beam body.

Images