A temporary support device between ribs of a rigid skeleton arch bridge and its use method

Abstract

The present invention relates to the technical field of arch bridge design and construction, and in particular to a temporary inter-rib support device for a rigid skeleton arch bridge, comprising a support member and a joint member, wherein the joint member is used to connect to an arch rib chord tube, and the end of the support member is detachably connected to the joint member via a force adjustment mechanism, wherein the force adjustment mechanism is constructed to be adjustable in length along the axis of the support member. During the construction of the arch bridge, a supporting force is provided to the arch rib chord tube to achieve overall stability during the rigid skeleton construction process. At the same time, the length of the force adjustment mechanism can be adjusted according to the construction progress to change the magnitude of the supporting force, thereby achieving consistency between the supporting force and the rigid skeleton construction progress, and the device can be dismantled in the later stages of construction, thereby reducing the overall construction difficulty and cost of the rigid skeleton arch bridge. The present invention also relates to a method for using a temporary inter-rib support device for a rigid skeleton arch bridge, which can provide a supporting force in an initial setting state and unload the force step by step during the arch rib construction process.

Description

Technical Field

[0001] The present invention relates to the technical field of arch bridge design and construction, and in particular to a temporary support device between ribs of a rigid skeleton arch bridge and a use method thereof. Background Art

[0002] With the development of materials, design and construction technology, the spanning capacity of arch bridges has gradually increased. Rigid skeleton concrete arch bridges have gradually been widely used in the construction of large arch bridges due to their advantages of high rigidity, simple later maintenance and low construction cost.

[0003] The construction method of large-scale rigid skeleton arch bridge is generally as follows: first, through the unsupported construction, the rigid skeleton is erected until it is closed, and then the concrete in the tube is poured after the rigid skeleton is closed, and then the reinforced concrete box plate arch or box rib arch is formed by pouring the outer concrete in sections and rings. During the overall construction process, the arch rib cross section needs to go through the structural change process of steel tube truss structure-steel tube concrete truss structure-partial box chamber structure-whole box structure in sequence. During the structural change process, the arch rib cross section and the overall stiffness gradually increase, and the load on the rigid skeleton is also gradually increasing. Although after the bridge is completed, the rigid skeleton arch bridge can rely on its strong cross section and arch arc effect , and has good overall stability, but in the process of its construction, its overall stability changes from weak to strong, but unlike other types of arch bridges, such as steel tube concrete arch bridges, steel box concrete arch bridges, etc., its overall stability does not simply change from weak to strong, but will have a trend of first decreasing and then increasing. Therefore, it is necessary to stably support the arch ribs during its construction. At present, increasing inter-rib cross braces is an important measure to ensure the construction stability of rigid skeleton arch bridges. The existing inter-rib cross braces mainly include steel components with permanent structures, which are welded between the arch rib chords. After the arch bridge is formed, it is buried in the outer concrete as a permanent component inside the arch bridge.

[0004] However, due to the large difference in stability of rigid-frame concrete arch bridges before and after forming, excessive and overly strong intercostal cross braces not only increase the construction difficulty and the overall concrete volume of the structure, but also, in order to effectively increase the structural stiffness during the construction process, the intercostal cross braces often bear part of the axial force of the arch ribs along the bridge. For reinforced concrete structures, due to the principle of deformation coordination, the cross braces will share too much axial force in the later stages of construction, and may even exceed their bearing capacity and local stability as permanent components, thereby affecting the stability of the arch bridge.

[0005] Therefore, there is an urgent need for a technical solution to solve the technical problem that the setting of inter-rib cross braces of existing rigid skeleton arch bridges increases construction difficulty and construction cost, and affects the stability of the arch bridge in the later stage of construction. Summary of the Invention

[0006] The purpose of the present invention is to provide a temporary inter-rib support device for a rigid skeleton arch bridge and a method for using the device, in order to address the technical problems that the setting of inter-rib cross braces of existing rigid skeleton arch bridges increases the construction difficulty and construction cost and affects the stability of the arch bridge in the later stage of construction.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A temporary inter-rib support device for a rigid skeleton arch bridge comprises a support member and a joint member, wherein the joint member is used to be connected to an arch rib chord tube, and the end of the support member is detachably connected to the joint member via a force adjustment mechanism, wherein the force adjustment mechanism is constructed to be adjustable in length along the axis direction of the support member.

[0009] The present invention provides a temporary support device between ribs of a rigid skeleton arch bridge. Support members and joint members are provided to support two adjacent arch rib chord tubes. During the construction of the arch bridge, supporting force is provided to the arch rib chord tubes, thereby achieving overall stability during the construction of the rigid skeleton. At the same time, the length of the force adjustment mechanism can be adjusted according to the construction progress to change the size of the supporting force, thereby achieving consistency between the supporting force and the construction progress of the rigid skeleton. At the same time, the detachable connection structure between the supporting member and the joint member can be used to dismantle the device in the later stage of construction, thereby reducing the overall construction difficulty and construction cost of the rigid skeleton arch bridge.

[0010] As a preferred embodiment of the present invention, the support member is constructed to include a first support surface, the joint member is constructed to include a second support surface, and the force adjustment mechanism is supported between the first and second support surfaces. The first and second support surfaces provide force application surfaces for the installation of the force adjustment mechanism, thereby limiting the direction of the supporting force.

[0011] As a preferred embodiment of the present invention, the force adjustment mechanism includes a jack, which is supported by the first support surface and the second support surface and connected to a force measuring device. The jack has a simple structure and can cooperate with the force measuring device to provide a set support force through length changes.

[0012] As a preferred embodiment of the present invention, the temporary support device further includes a plurality of safety lock mechanisms, each comprising an adjustment member, the adjustment member being provided with a limiting hole and a strip-shaped hole, each provided with a limiting member, the support member and the joint member being provided with a limiting plate, the limiting member being detachably connected to the limiting plate. The safety lock mechanism is configured to limit the distance between the support member and the joint member when the limiting member is in a locked state, thereby temporarily limiting the support member and the joint member and assisting in the installation and removal of the force adjustment mechanism.

[0013] As a preferred embodiment of the present invention, the support member is constructed to include a support pipe segment, wherein at least one first reaction frame is disposed within the support pipe segment, and the first support surface is formed on the first reaction frame. By defining the support direction of the support force by the inner wall of the support pipe segment, the structure is simple, the preparation is easy, and it facilitates the recycling of the support member. Furthermore, multiple first reaction frames can be provided according to actual conditions to provide a support foundation for the installation of multiple force adjustment mechanisms. The multiple force adjustment mechanisms cooperate to ensure that the support force is along the axis of the support member, thereby reducing the bending moment acting on the temporary support device.

[0014] As a preferred embodiment of the present invention, the support structure includes a plurality of parallel support pipe segments, with diagonal support pipe segments disposed between adjacent support pipe segments, the diagonal support pipe segments intersecting the support pipe segments. The diagonal support pipe segments enhance the stability of the temporary support device, and the support pipe segments and the diagonal support pipe segments form a planar structural member, thereby enhancing the support effectiveness of the temporary support device.

[0015] As a preferred embodiment of the present invention, the joint member is constructed to include a joint pipe section, wherein at least one second reaction frame is disposed within the joint pipe section, the second support surface is formed on the second reaction frame, and the second reaction frame is connected to the arch rib chord tube. The first reaction frame and the second reaction frame cooperate to provide a support foundation for the installation of the force adjustment mechanism. At the same time, the second reaction frame is connected to the arch rib chord tube to stably transmit the support force to the arch rib chord tube, thereby improving the support effect of the temporary support device.

[0016] As a preferred embodiment of the present invention, the support members include transverse bracing members and / or diagonal bracing members. The transverse bracing members are configured to be perpendicular to two adjacent arch rib chords, and the diagonal bracing members are configured to be arranged at an acute angle to the arch rib chords. Depending on practical circumstances, transverse bracing members can be provided to provide stable lateral support for two adjacent arch rib chords, and / or diagonal bracing members can be provided to increase the axial force in the longitudinal direction of the arch rib chords that the temporary support device actively bears.

[0017] A method for using a temporary inter-rib support device for a rigid skeleton arch bridge includes the steps of setting a joint component on the upper chord tube plane or the lower chord tube plane of the arch rib, temporarily limiting the connection between the joint component and the support component by a safety lock mechanism, and supporting and setting a force adjustment mechanism between the support component and the joint component. The force adjustment mechanism is constructed to provide a support force in an initial setting state and reduce the support force according to the construction progress during the construction of the rigid skeleton arch bridge.

[0018] The present invention provides a method for using a temporary support device between ribs of a rigid skeleton arch bridge. The temporary support device provides support for the upper chord tube plane or the lower chord tube plane of the arch rib. During the construction of the arch rib of the rigid skeleton arch bridge, the support force is reduced according to the construction progress, and the force is unloaded step by step according to the construction progress. The support force of the temporary support device is matched with the stability during the construction of the rigid skeleton arch bridge, thereby improving the overall stability of the rigid skeleton arch bridge construction. The device is simple to install and disassemble and can be recycled, thereby providing an economical, convenient and efficient support method for the stable construction of the rigid skeleton arch bridge.

[0019] As a preferred solution of the present invention, after the stability of the rigid skeleton arch bridge meets the design requirements, the force adjustment mechanism, the safety lock mechanism, the support member and the joint member are removed in sequence.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the temporary support device between ribs of a rigid skeleton arch bridge of the present invention are:

[0021] 1. Supporting two adjacent arch rib chord tubes by setting supporting members and joint members provides support force to the arch rib chord tubes during the construction of the arch bridge, thus achieving overall stability during the construction of the rigid skeleton;

[0022] 2. The length of the force adjustment mechanism can be adjusted according to the construction progress to change the size of the supporting force and achieve consistency between the supporting force and the construction progress of the rigid frame;

[0023] 3. The detachable connection structure between the supporting members and the joint members can be dismantled in the later stage of construction, reducing the overall construction difficulty and construction cost of the rigid skeleton arch bridge. The beneficial effects are:

[0024] The beneficial effects of the method for using the temporary inter-rib support device of a rigid skeleton arch bridge of the present invention are:

[0025] A temporary support device is used to provide support for the upper chord tube plane or the lower chord tube plane of the arch rib. During the construction of the arch rib of the rigid skeleton arch bridge, the force is unloaded step by step according to the construction progress, so that the supporting force of the temporary support device matches the stability of the rigid skeleton arch bridge during construction, thereby improving the overall stability of the rigid skeleton arch bridge construction. The device is easy to install and disassemble and can be recycled, providing an economical, convenient and efficient support method for the stable construction of the rigid skeleton arch bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a temporary inter-rib support device for a rigid skeleton arch bridge according to Example 1;

[0027] Figure 2 1 is a schematic cross-sectional view of a temporary support device between ribs of a rigid skeleton arch bridge according to Example 1;

[0028] Figure 3 yes Figure 2 Structural diagram from another perspective;

[0029] Figure 4 Schematic diagram of the explosion structure of the safety lock mechanism described in Example 2;

[0030] Figure 5 is a schematic diagram of the combined structure of the safety lock mechanism described in Example 2;

[0031] Figure 6 This is a schematic structural diagram of a temporary inter-rib support device for a rigid skeleton arch bridge according to Example 2;

[0032] Figure 7 2 is a schematic cross-sectional view of a temporary support device between ribs of a rigid skeleton arch bridge according to Example 2;

[0033] Figure 8 yes Figure 7 Structural diagram from another perspective;

[0034] Figure 9 This is a schematic structural diagram of a temporary inter-rib support device for a rigid skeleton arch bridge according to Example 4;

[0035] Figure 10 This is a schematic diagram of the structure of a temporary support device between ribs of a rigid skeleton arch bridge in Example 5. Figure 1 ;

[0036] Figure 11 This is a schematic diagram of the structure of a temporary support device between ribs of a rigid skeleton arch bridge in Example 5. Figure 2 ;

[0037] Figure 12 is a partial front view of the rigid skeleton arch bridge of the present invention;

[0038] Figure 13 It is a partial top view of the rigid skeleton arch bridge described in the present invention.

[0039] icon:

[0040] 1-support member, 11-first supporting surface, 12-support pipe section, 13-first reaction frame, 14-diagonal bracing pipe section, 2-joint member, 21-second supporting surface, 22-joint pipe section, 23-second reaction frame, 3-arch rib chord tube, 4-force adjustment mechanism, 41-jack, 5-safety lock mechanism, 51-adjusting member, 52-limiting hole, 53-strip hole, 54-limiting piece, 55-limiting plate, 6-cross bracing member, 7-diagonal bracing member. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings.

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] Example 1

[0044] like Figure 1-Figure 3 As shown, a temporary support device between ribs of a rigid skeleton arch bridge in this embodiment includes a support member 1 and a joint member 2, wherein the joint member 2 is used to be connected to the arch rib chord 3, and the end of the support member 1 is detachably connected to the joint member 2 through a force adjustment mechanism 4, the support member 1 is constructed to include a first support surface 11, the joint member 2 is constructed to include a second support surface 21, the force adjustment mechanism 4 includes a jack 41, the jack 41 is supported on the first support surface 11 and the second support surface 21, the jack 41 is connected to a force measuring device, and the force adjustment mechanism 4 is constructed to be adjustable in length along the axial direction of the support member 1.

[0045] In this embodiment, the support member 1 and the joint member 2 are both steel members. The support member 1 and the joint member 2 are formed into a first support surface 11 and a second support surface 21 by structural members such as steel plates and steel structures. The first support surface 11 and the second support surface 21 are both planes. When in use, the two oppositely arranged joint members 2 are respectively welded to the arch rib chord tube 3, and the support member 1 is arranged between the two oppositely arranged joint members 2. The two ends of the support member 1 are respectively detachably connected to the joint member 2 through the abutment action of the jack 41. The jack 41 is vertically supported between the first support surface 11 and the second support surface 21. After the jack 41 is removed, the support member 1 and the joint member 2 remain structurally independent.

[0046] Preferably, the first supporting surface 11 and the second supporting surface 21 may be provided with limiting grooves according to the setting requirements of the jack 41 .

[0047] Preferably, the support member 1 is constructed as a rod-shaped structure, the first support surface 11 is formed at the end of the support member 1 in the axial direction, the joint member 2 is constructed as a rod-shaped structure with a length significantly smaller than the support member 1, and the second support surface 21 is formed at the end of the joint member 2 close to the support member 1, so that the jack 41 is arranged close to the arch rib chord 3. When the temporary support device maintains the state of bearing the axial force of the arch rib along the bridge direction, the axial force along the axial direction of the support member 1 is mainly concentrated at the joint member 2 close to the arch rib chord 3, and the overall bending moment of the temporary support device is small, so that the temporary support device can maintain continuous structural stability during use.

[0048] Preferably, the number of jacks 41 is one or more. When the number of jacks 41 is multiple, multiple jacks 41 are supported between the first support surface 11 and the second support surface 21 at the same time. By adjusting the force of each jack 41 separately, the joint member 2 is mainly affected by the axial force in the axial direction of the supporting member 1, and the bending moment is reduced to the greatest extent, so that the overall bending moment of the cross section of the temporary support device is minimized and the structural stability is optimized during use. At the same time, the cooperation of multiple jacks 41 can correspondingly reduce the model requirements of each jack 41, reduce the overall cost of the temporary support device, and facilitate low-cost replacement after a single jack 41 fails, thereby reducing maintenance costs.

[0049] Preferably, the force measuring device is attached to the jack 41 and is used to collect the tension value of the jack 41 in real time to determine the relationship between the jack 41 and the required target pressure in real time, so as to facilitate the adjustment and disassembly of the temporary support device.

[0050] The present embodiment provides a temporary inter-rib support device for a rigid skeleton arch bridge, which supports two adjacent arch rib chord tubes 3 by providing a support member 1 and a joint member 2. During the construction of the rigid skeleton arch bridge, the arch rib chord tubes 3 are provided with support force, thereby ensuring the overall stability of the rigid skeleton arch bridge during construction. At the same time, the length of the force adjustment mechanism 4 can be adjusted according to the construction progress to change the size of the support force, thereby achieving consistency between the support force and the construction progress of the rigid skeleton arch bridge. At the same time, the detachable connection structure between the support member 1 and the joint member 2 can be dismantled in the later stage of construction, thereby reducing the overall construction difficulty and construction cost of the rigid skeleton arch bridge.

[0051] Example 2

[0052] like Figures 1-8 As shown, a temporary inter-rib support device for a rigid skeleton arch bridge of this embodiment, based on Example 1, further includes a plurality of safety lock mechanisms 5, wherein the safety lock mechanism 5 includes an adjusting member 51, and the adjusting member 51 is provided with a limiting hole 52 and a strip hole 53, and the limiting hole 52 and the strip hole 53 are respectively provided with a limiting member 54, and the supporting member 1 and the joint member 2 are respectively provided with a limiting plate 55, and the limiting member 54 is detachably connected to the limiting plate 55.

[0053] The present embodiment is a temporary support device between the ribs of a rigid skeleton arch bridge, and the safety lock mechanism 5 is constructed to be arranged on the outer walls of the support member 1 and the joint member 2. The adjusting member 51 and the limit plate 55 are both constructed as steel plate structural members. The limit member 54 includes a bolt, and the limit plates 55 are respectively set on the outer walls of the support member 1 and the outer walls of the joint member 2 by welding with fillet welds. When in use, the limit plate 55 is fitted with the adjusting member 51, and the bolt is arranged in a direction perpendicular to the axis of the support member 1, and is used in conjunction with a gasket to connect the limit plate 55 and the adjusting member 51. When the bolt is in a loose state, the position of the bolt can be adjusted along the strip hole 53 according to actual conditions to change the distance between the support member 1 and the joint member 2. After the bolt is tightened, the distance between the support member 1 and the joint member 2 is limited. The support member 1 and the joint member 2 can be temporarily limited before or after the jack 41 is installed or disassembled, thereby assisting the installation and removal of the force adjustment mechanism 4.

[0054] Example 3

[0055] like Figures 1-13 As shown, this embodiment is a temporary support device between ribs of a rigid skeleton arch bridge. On the basis of Example 2, the support member 1 is constructed to include a support pipe segment 12, at least one first reaction frame 13 is arranged in the support pipe segment 12, and the first support surface 11 is formed on the first reaction frame 13. The joint member 2 is constructed to include a joint pipe segment 22, at least one second reaction frame 23 is arranged in the joint pipe segment 22, the second support surface 21 is formed on the second reaction frame 23, and the second reaction frame 23 is connected to the arch rib chord tube 3.

[0056] The present embodiment is a temporary support device between the ribs of a rigid skeleton arch bridge, in which the support member 1 and the joint member 2 are both constructed as steel pipe structures. A reaction frame structure is welded inside the steel pipe structure to form a first support surface 11 and a second support surface 21. The structure is simple, and the force direction of the jack 41 can be limited by the inner diameter of the pipe segment. The direction of the support force is determined according to the alignment of the center line of the pipe segment, ensuring that the support force is along the axial direction of the support member 1, further reducing the bending moment on the temporary support device, improving the support stability of the temporary support device, improving its installation efficiency and installation accuracy, and reducing the difficulty of installation.

[0057] Preferably, the number of the first reaction frames 13 and the second reaction frames 23 is set according to the number of the jacks 41 .

[0058] Preferably, multiple first reaction frames 13 are evenly spaced along the circumference of the support pipe segment 12 and are arranged inside the support pipe segment 12, and multiple second reaction frames 23 are evenly spaced along the circumference of the joint pipe segment 22 and are arranged inside the joint pipe segment 22, and the first reaction frames 13 and the second reaction frames 23 are arranged opposite to each other.

[0059] Preferably, the first reaction frame 13 includes several longitudinal stiffening plates arranged along the inner wall of the support pipe section 12, each longitudinal stiffening plate is welded to the inner wall of the support pipe section 12 by a fillet weld, and an end plate is arranged on the side of the longitudinal stiffening plate close to the end of the support pipe section 12, and the end plate is welded to each longitudinal stiffening plate, and the first support surface 11 is formed by the end plate. According to actual conditions, steel plate structural members can be added between adjacent longitudinal stiffening plates to improve the supporting strength of the first reaction frame 13, and the support member 1 formed by the steel pipe and the steel plate has a simple structure, is easy to prepare, and is conducive to the fixation and recycling of the support member 1.

[0060] Preferably, the second reaction frame 23 is similar in structure to the first reaction frame 13 and has the same number, the only difference being that one end of the second reaction frame 23 close to the arch rib chord tube 3 is welded to the arch rib chord tube 3 by a fillet weld.

[0061] Example 4

[0062] like Figure 9 As shown, this embodiment is a temporary support device between the ribs of a rigid skeleton arch bridge. On the basis of Examples 1 to 3, the support member 1 includes a plurality of support pipe segments 12 arranged in parallel, and oblique support pipe segments 14 are arranged between adjacent support pipe segments 12. The oblique support pipe segments 14 are arranged to intersect with the support pipe segments 12.

[0063] In this embodiment, a temporary support device between the ribs of a rigid skeleton arch bridge is provided. The support pipe segment 12 is constructed to include a single steel pipe. Multiple support pipe segments 12 are connected by diagonal support pipe segments 14 to form a steel pipe-type support member 1 that is planar as a whole. The multiple support pipe segments 12 correspond to the supporting connection joint members 2 at the ends, so that when the temporary support device is in use, the multiple diagonally distributed force adjustment mechanisms 4 provide coordinated support, thereby improving the overall stability of the temporary support device and improving the supporting effect of the temporary support device.

[0064] Preferably, the diagonal bracing pipe section 14 includes a single independently arranged steel pipe or a steel pipe component formed by intersecting and welding multiple steel pipes to form an X-shaped, K-shaped, =-shaped or other diagonal bracing structure to adapt to use in different support environments.

[0065] Example 5

[0066] like Figure 10-11 As shown, this embodiment is a temporary support device between the ribs of a rigid skeleton arch bridge. On the basis of Examples 1 to 3, the support member 1 includes a cross-bracing member 6 and / or a diagonal bracing member 7. The cross-bracing member 6 is constructed to be arranged perpendicular to two adjacent arch rib chord tubes 3, and the diagonal bracing member 7 is constructed to be arranged at an acute angle to the arch rib chord tubes 3.

[0067] In this embodiment, a temporary support device between ribs of a rigid skeleton arch bridge is provided. The support member 1 is constructed as a single steel member with an axial direction. The joint member 2 is set to be perpendicular to or at an acute angle to the arch rib chord tube 3, so that the temporary support device can be formed as a whole and set perpendicular to or at an acute angle to the axis of the arch rib chord tube 3 when in use. The cross bracing member 6 can be used to provide stable lateral support force to two adjacent arch rib chord tubes 3, and the diagonal bracing member 7 can bear more axial force along the longitudinal direction of the arch rib chord tube 3.

[0068] Specifically, the location, quantity and arrangement of the transverse bracing members 6 and the diagonal bracing members 7 can be adjusted according to actual conditions to achieve stable support of the arch rib chord tubes at different positions.

[0069] Preferably, the diagonal bracing member 7 can be set to include intersecting welded steel members according to actual conditions, that is, two diagonal bracing members 7 are intersecting welded to form an overall X-shaped, K-shaped, etc. steel member. When in use, the axial ends of each steel member constituting the diagonal bracing member 7 are respectively provided with a force adjustment mechanism 4 and a joint member 2 to form a temporary support device with different support effects.

[0070] Example 6

[0071] A method for using a temporary inter-rib support device for a rigid skeleton arch bridge is described based on Example 4 and includes the following steps:

[0072] S1: Before hoisting the arch rib rigid frame segment, the support pipe segment 12 and / or the diagonal support pipe segment 14 are welded on the ground, the first reaction frame 13 is welded on the inner side near the end of the support pipe segment 12 to form a support member 1 including a first support surface 11, and the second reaction frame 23 is welded in the joint pipe segment 21 to form a joint member 2 including a second support surface 21.

[0073] S2: Use a cable lifting system, an arch crane system, or an intercostal lifting system to lift the joint component 2 as a whole to the designed pre-installation position on the arch rib chord tube 3, and weld the joint component 2 on the arch rib chord tube 3 through fillet welds.

[0074] Specifically, the designed pre-installation position of the temporary support device on the arch rib chord tube 3 is determined according to the proposed construction plan combined with the structural force analysis calculation. For the outsourcing concrete construction plan of first pouring the rigid skeleton bottom plate ring, web ring and top plate ring, the temporary support device is supported and set on the plane of the arch rib upper chord tube.

[0075] S3: On the joint member 2 and the support member 1, according to the designed position, a limiting plate 55 constituting the safety lock mechanism 5 is welded.

[0076] S4: Use a cable lifting system, an arch crane system or an inter-rib lifting system to lift the supporting member 1 as a whole to the designed pre-installation position on the arch rib chord tube 3, and realize a temporary limited connection between the joint member 2 and the supporting member 1 through the safety lock mechanism 5. At this time, the bolts constituting the safety lock mechanism 5 are in a relaxed state.

[0077] S5: A force adjustment mechanism 5 including a jack 41 is supported and arranged between the support member 1 and the joint member 2. The jack 41 is pre-tensioned to a sufficient length during installation to provide sufficient supporting force in the initial state. After the jack 41 is pre-pressed into place, the bolts constituting the safety lock mechanism 5 are adjusted to be in a locked state to complete the installation of the temporary support device.

[0078] S6: During the rigid frame construction process, the tension value of the jack 41 is collected in real time using the force measuring device, and the jack 41 is unloaded step by step according to the construction progress.

[0079] Specifically, the step-by-step unloading includes pre-planning the timing of graded unloading, the number of unloading times and the size of unloading at each level based on the actual construction plan, site conditions and stability requirements of the rigid skeleton structure, so as to achieve real-time adjustment of the supporting force of the temporary support device as the construction process progresses, and timely dismantling of the temporary support device after the rigid skeleton arch bridge has undergone structural analysis and the stability meets the design requirements.

[0080] Specifically, the step-by-step unloading is constructed to slowly and gradually relax the pressure of the jack 41 according to the construction progress. Before each level of unloading operation, the bolts of the safety lock mechanism 5 are loosened and slowly adjusted according to the unloading scheme until the force measuring device shows that the jack 41 has reached the target pressure, and then the bolts are tightened.

[0081] S7: After the structural analysis of the rigid skeleton arch bridge and the stability meets the design requirements, the temporary support device will be removed.

[0082] Specifically, when dismantling is required, loosen the bolts, keep the safety lock mechanism 5 connected, slowly release the jack 41, remove the jack 41 and the force measuring device, use the lifting system to fix the support member 1, remove the safety lock mechanism 5, and then dismantle and lift the support member 1.

[0083] Specifically, the joint component 2 is cut and removed according to actual conditions.

[0084] The present embodiment provides a method for using a temporary support device between the ribs of a rigid skeleton arch bridge. The temporary support device provides support for the upper chord tube or the lower chord tube of the arch rib. During the construction of the arch rib, the force is unloaded step by step according to the construction progress, so that the supporting force of the temporary support device matches the stability during the rigid skeleton construction process, thereby improving the overall stability of the rigid skeleton arch bridge construction. The device is easy to install and disassemble and can be recycled, providing an economical, convenient and efficient support method for the stable construction of the rigid skeleton arch bridge.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for using a temporary support device between ribs of a rigid skeleton arch bridge, characterized in that: A temporary inter-rib support device for a rigid skeleton arch bridge comprises a support member (1) and a joint member (2), wherein the joint member (2) is used to be connected to an arch rib chord tube (3), an end portion of the support member (1) is detachably connected to the joint member (2) via a force adjustment mechanism (4), and the force adjustment mechanism (4) is configured to be adjustable in length along the axis direction of the support member (1), the support member (1) is configured to include a first support surface (11), the joint member (2) is configured to include a second support surface (21), the force adjustment mechanism (4) is supported on the first support surface (11) and the second support surface (21), the force adjustment mechanism (4) comprises a jack (41), the jack (41) is supported between the first support surface (11) and the second support surface (21), and the jack (41) is connected to a force measuring device; the support member (1) is configured to include a support tube The support pipe section (12) is provided with at least one first reaction frame (13), and the first support surface (11) is formed on the first reaction frame (13); the joint member (2) is constructed to include a joint pipe section (22), and at least one second reaction frame (23) is provided in the joint pipe section (22), and the second support surface (21) is formed on the second reaction frame (23), and the second reaction frame (23) is connected to the arch rib chord tube (3); and further includes a plurality of safety lock mechanisms (5), the safety lock mechanism (5) including an adjusting member (51), the adjusting member (51) being provided with a limiting hole (52) and a strip hole (53), the limiting hole (52) and the strip hole (53) being provided with a limiting member (54), the supporting member (1) and the joint member (2) being provided with a limiting plate (55), and the limiting member (54) and the limiting plate (55) being detachably connected; A method for using a temporary inter-rib support device for a rigid skeleton arch bridge includes: Step 1: Setting a joint member (2) on the upper chord tube plane or the lower chord tube plane of the arch rib; Step 2: temporarily limiting the connection between the joint member (2) and the supporting member (1) through the safety lock mechanism (5); Step 3: A force adjustment mechanism (4) including a jack (41) is supported and arranged between the support member (1) and the joint member (2). The force adjustment mechanism (4) is constructed to pre-tension the jack (41) to a sufficient length in an initial setting state to provide sufficient supporting force. During the construction of the rigid skeleton arch bridge, the tensioning value of the jack (41) is collected in real time according to the force measuring device, and the jack (41) is gradually unloaded according to the construction progress to reduce the supporting force.

2. The method for using the temporary inter-rib support device of a rigid skeleton arch bridge according to claim 1, characterized in that: The support member (1) comprises a plurality of support pipe sections (12) arranged in parallel, an oblique support pipe section (14) being arranged between adjacent support pipe sections (12), and the oblique support pipe section (14) and the support pipe section (12) being arranged to intersect.

3. The method for using the temporary inter-rib support device of a rigid skeleton arch bridge according to claim 1, characterized in that: The supporting member (1) comprises a transverse bracing member (6) and / or a diagonal bracing member (7); the transverse bracing member (6) is configured to be arranged perpendicular to two adjacent arch rib chord tubes (3); and the diagonal bracing member (7) is configured to be arranged at an acute angle to the arch rib chord tubes (3).

4. The method for using the temporary support device between ribs of a rigid skeleton arch bridge according to claim 1, characterized in that: After the stability of the rigid skeleton arch bridge meets the design requirements, the force adjustment mechanism (4), the safety lock mechanism (5), the support member (1), and the joint member (2) are removed in sequence.

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