Bracket system for construction of No.0 block

Abstract

A support system for zero block construction relates to the technical field of bridge construction and comprises a plurality of triangular support sets arranged on a pier at intervals, each triangular support set is composed of a pair of triangular supports, and each triangular support comprises a cross beam, a diagonal bar, an upper embedded part and a lower embedded part. The connecting components of the support are connected through the bolts, so that the connecting mode of the components is simplified, the mounting and dismounting processes are simplified, the efficiency is improved, the high-altitude operation time is shortened, and safety accidents caused by exposure of operators to dangerous environments for a long time are avoided. In addition, the stress mode of each structural member is defined, a statically determinate structure is suitable to be adopted, safety check is facilitated, different combined stress modes are adopted according to the difference of bearing reaction provided by the embedded part, and the embedded part is prevented from climbing a cone and being sheared and pulled at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, specifically, relate to a support system for 0 block construction. BACKGROUND

[0002] 0 block is the first pouring concrete unit when the cantilever construction of long-span continuous girder bridge, is located the bridge pier directly above, is the reference fulcrum of subsequent segment construction. Bracket is the indispensable component in the process of 0 block construction, bracket is fixed on the bridge pier, is used to support the formwork, support and concrete weight of the extension of both sides of the bridge pier.

[0003] In the prior art, when the 0 block concrete cast-in-place section of the top of the pier is constructed, the conventional pre-embedded climbing cone is used to set the corbel, and the components of the cast-in-place load-bearing support are welded with the corbel. Although this process is mature and reliable, it still has the following problems: first, because the welding method is used, the operation is complex and the construction period is long when the components are installed and removed, and the construction efficiency is low; second, because it is high-altitude operation, the construction safety risk is large for a long time, and safety accidents are easily induced; third, the existing bracket component connection is complex, it is not easy to determine the stress mode of each structural component, and it is not conducive to safety checking; finally, the existing pre-embedded climbing cone is subjected to shear and tension at the same time, and the stress mode is not conducive. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a support system for 0 block construction, which is novel in structure, easy to operate, can realize the rapid installation and removal of the support, shorten the construction period and improve the construction safety.

[0005] The embodiment of the utility model is implemented as follows:

[0006] A support system for 0 block construction comprises a plurality of triangular support groups arranged at intervals on a bridge pier, each triangular support group is composed of a pair of triangular supports, and each triangular support comprises a crossbeam, an inclined strut, an upper embedded part and a lower embedded part. The upper embedded part and the lower embedded part are arranged at intervals along the height direction of the bridge pier. The top of the upper embedded part is provided with a first ear plate, and one end of the crossbeam in the length direction is provided with a first pin hole, which can be hinged with the first ear plate through a pin shaft. The top of the lower embedded part is provided with a second ear plate, and the bottom of the crossbeam is provided with a third ear plate. One end of the inclined strut in the length direction is provided with a second pin hole, and the other end is provided with a third pin hole, which can be hinged with the second ear plate and the third ear plate respectively through pin shafts.

[0007] Further, in other preferable embodiments of the utility model, the bottom of the crossbeam is provided with a first lifting lug, and the first lifting lug is arranged close to the first pin hole. The top of the inclined strut is provided with a second lifting lug, and the second lifting lug is arranged close to the second pin hole.

[0008] Furthermore, in other preferred embodiments of this utility model, both the upper and lower embedded parts are provided with bracket structures at their bottoms.

[0009] Furthermore, in other preferred embodiments of this utility model, both the upper and lower embedded parts include two sets of mounting holes arranged side by side along their width direction, and each set of mounting holes includes a plurality of mounting holes spaced apart along the height direction of the upper embedded part.

[0010] Furthermore, in other preferred embodiments of this utility model, the uppermost mounting holes of the upper embedded part are fixed to the bridge pier by precision-rolled threaded steel rods, and the lowermost mounting holes are fixed to the bridge pier by climbing cones.

[0011] Furthermore, in other preferred embodiments of this utility model, the upper mounting holes of the lower embedded part are fixed to the bridge pier by steel rods, and the lower mounting holes are fixed to the bridge pier by climbing cones.

[0012] Furthermore, in other preferred embodiments of this utility model, each pair of diagonal braces in the triangular bracket group are connected by multiple horizontally arranged connecting rods, which are spaced apart along the length of the diagonal braces.

[0013] Furthermore, in other preferred embodiments of this utility model, two adjacent triangular support groups at the same height are connected by horizontal bracing.

[0014] The beneficial effects of this utility model embodiment are:

[0015] This utility model provides a support system for the construction of block 0, which connects the various connecting components of the support system through pins, simplifying the connection method between the components, simplifying the installation and dismantling process, improving efficiency, reducing the time spent working at height, and avoiding safety accidents caused by prolonged exposure of workers to dangerous environments. Furthermore, it clearly defines the stress mode of each structural component, preferably using statically determinate structures for easy safety verification. Based on the differences in the support reactions provided by the embedded parts, different combined stress modes are adopted to avoid the embedded parts being subjected to both shear and tension simultaneously. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a support system for the construction of block 0 provided in an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of a triangular support group for a construction support system for block 0 provided in this embodiment of the present invention;

[0019] Figure 3 An enlarged schematic diagram of a support system for the construction of block 0 provided in this embodiment of the present invention at point III;

[0020] Figure 4 This is an enlarged schematic diagram at point IV of a support system for the construction of block 0 provided in an embodiment of the present utility model;

[0021] Figure 5 An enlarged schematic diagram at point V of a support system for construction of block 0 provided in an embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the installation of the upper embedded part of a support system for construction of block 0 provided in an embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of the installation of the lower embedded part of a support system for construction of block 0 provided in an embodiment of this utility model.

[0024] Icons: 100-0 block construction support system; 101-triangular support group; 102-triangular support; 110-crossbeam; 111-third ear plate; 112-first lifting lug; 113-stiffening plate; 120-diagonal brace; 121-second lifting lug; 122-connecting rod; 130-upper embedded part; 131-first ear plate; 140-lower embedded part; 141-second ear plate; 150-pin; 160-bracing structure; 170-mounting hole; 180-horizontal brace; 200-0 block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, 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", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly 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 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 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. Example

[0030] This embodiment provides a support system 100 for the construction of block 0 and its method, referring to... Figure 1 As shown, the support system 100 for the construction of block 0 includes multiple triangular support groups 101 that are spaced apart on the pier.

[0031] Each triangular support group 101 consists of a pair of triangular supports 102, such as...Figure 2 As shown, each of the triangular brackets 102 includes a crossbeam 110, a diagonal brace 120, an upper embedded part 130, and a lower embedded part 140; the upper embedded part 130 and the lower embedded part 140 are spaced apart along the height direction of the pier, the top of the upper embedded part 130 is provided with a first ear plate 131, and one end of the crossbeam 110 in the length direction is provided with a first pin hole, which can be hinged to the first ear plate 131 by a pin (see...). Figure 3 The lower embedded part 140 is provided with a second ear plate 141 at its top, and the crossbeam 110 is provided with a third ear plate 111 at its bottom. One end of the diagonal brace 120 along its length is provided with a second pin hole, and the other end is provided with a third pin hole. It can be hinged to the second ear plate 141 and the third ear plate 111 respectively via pins (see...). Figures 4-5 All major components are connected by pins, which greatly simplifies the installation and dismantling process, effectively improves construction efficiency, reduces exposure time at heights, and enhances construction safety.

[0032] Furthermore, such as Figure 2 and Figure 3 As shown, the bottom of the crossbeam 110 is provided with a first lifting lug 112, which is located near the first pin hole; the top of the diagonal brace 120 is provided with a second lifting lug 121, which is located near the second pin hole. During construction, the first lifting lug 112 and the second lifting lug 121 serve as temporary fixation. Steel wire ropes can be passed through the first lifting lug 112 and the second lifting lug 121 to prevent the components from swinging during hoisting and to facilitate connection and fixation with the upper embedded part 130 and the lower embedded part 140.

[0033] Both the upper embedded part 130 and the lower embedded part 140 are provided with a bracket structure 160 at their bottom. The bracket structure 160 can enhance the support effect of the upper embedded part 130 and the lower embedded part 140 and improve the overall stability.

[0034] Furthermore, both the upper embedded part 130 and the lower embedded part 140 include two sets of mounting holes arranged side by side along their width direction, and each set of mounting holes includes a plurality of mounting holes 170 spaced apart along the height direction of the upper embedded part 130. In this embodiment, each set of mounting holes includes four mounting holes 170.

[0035] For the upper embedded part 130, such as Figure 6As shown, the two upper mounting holes 170 are fixed to the bridge pier via threaded steel rods, while the two lower mounting holes 170 are fixed to the bridge pier via climbing cones. The threaded steel rods are made of 32mm diameter PSB930 profile, with an anchorage length of 1.2m. A 20cm PVC sleeve is used between the threaded steel rod and the anchorage end, and the remaining length of the threaded steel rod is directly anchored into the concrete. The climbing cones are M36-20 type, with 40Cr nuts and 45# steel bolts, and an anchorage depth of 500mm. The threaded steel rods provide tensile strength, while the climbing cones provide shear strength.

[0036] Furthermore, for the lower embedded part 140, such as Figure 7 As shown, the two upper mounting holes 170 are fixed to the pier via steel bars, while the two lower mounting holes 170 are fixed to the pier via climbing cones. The steel bars are made of 40mm diameter Q345 profile, ensuring an anchorage length of 0.6m, directly anchored into the concrete. The climbing cones are of type M36-20, with 40Cr nuts and 45# steel bolts, and an anchorage depth of 500mm. Similarly, the steel bars provide tensile resistance, while the climbing cones provide shear resistance. This invention utilizes different anchors to separate tensile and shear resistance, avoiding the unfavorable stress distribution of traditional anchors that are simultaneously subjected to both shear and tension. Furthermore, based on the difference in support reaction forces provided by the upper embedded part 130 and the lower embedded part 140, this invention also employs different combined stress modes, providing a more scientific and reliable connection support.

[0037] In addition, such as Figure 1 As shown, each pair of diagonal braces 120 in each triangular support group 101 are connected by multiple horizontally arranged connecting rods 122, which are spaced apart along the length of the diagonal braces 120. The multiple connecting rods 122 form a ladder-like structure, which facilitates the operator to move up and down as a temporary passage.

[0038] Two adjacent triangular support groups 101 at the same height are connected by horizontal diagonal bracing 180. This further improves the overall strength of the entire support system 100 for the construction of block 0.

[0039] The installation method of the support system 100 for the construction of block 0 is as follows:

[0040] S1. Install the upper embedded part 130 and the lower embedded part 140 on the bridge pier.

[0041] S2. The third ear plate 111 of the crossbeam 110 and the third pin hole of the diagonal brace 120 are fixedly connected by a pin 150.

[0042] S3. Hoist the connected crossbeam 110 and diagonal brace 120 to the upper embedded part 130 and lower embedded part 140. During the hoisting process, use wire ropes to pass through the first lifting lug 112 and the second lifting lug 121 to prevent the components from swinging during the hoisting process.

[0043] S4. Connect the first ear plate 131 of the upper embedded part 130 and the first pin hole of the crossbeam 110 through the pin 150; connect the second ear plate 141 of the lower embedded part 140 and the second pin hole of the diagonal brace 120 through the pin 150.

[0044] Furthermore, the disassembly of the support system 100 for the construction of block 0 includes the following steps:

[0045] S1. Use steel wire ropes to pass through the first lifting lug 112 and the second lifting lug 121 to provide temporary support for the crossbeam 110 and the diagonal brace 120 during the dismantling process, so as to prevent the entire support from suddenly becoming unstable during the dismantling process.

[0046] S2. Temporary supports are provided for the crossbeam 110 and the diagonal brace 120. The pins 150 at the first ear plate 131 and the second ear plate 141 are removed. When the pins 150 at the second ear plate 141 are removed, the workers can go up and down through the temporary passage formed by the connecting rod 122.

[0047] S3. Lower the entire triangular bracket assembly 101 to the ground, remove the pin 150 at the third ear plate 111, and retrieve the crossbeam 110 and diagonal brace 120 for reuse.

[0048] In summary, this utility model embodiment provides a support system 100 for the construction of block 0, which connects the various connecting components of the support through pins 150, simplifying the connection method between the components, simplifying the installation and dismantling process, improving efficiency, reducing the time spent working at height, and avoiding safety accidents caused by prolonged exposure of workers to dangerous environments. Furthermore, it clearly defines the stress mode of each structural component, preferably adopting a statically determinate structure for convenient safety verification. Based on the differences in the support reaction forces provided by the embedded parts, different combined stress modes are adopted to avoid the embedded parts being subjected to both shear and tension simultaneously.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A support system for constructing block 0, characterized in that, The system includes multiple triangular support groups spaced apart on the bridge piers. Each triangular support group consists of a pair of triangular supports, each of which includes a crossbeam, a diagonal brace, an upper embedded part, and a lower embedded part. The upper and lower embedded parts are spaced apart along the height of the bridge pier. The top of the upper embedded part is provided with a first ear plate, and one end of the crossbeam along its length is provided with a first pin hole, which can be hinged to the first ear plate via a pin shaft. The top of the lower embedded part is provided with a second ear plate, and the bottom of the crossbeam is provided with a third ear plate. One end of the diagonal brace along its length is provided with a second pin hole, and the other end is provided with a third pin hole, which can be hinged to the second ear plate and the third ear plate respectively via pin shafts.

2. The support system for construction of block 0 according to claim 1, characterized in that, The bottom of the crossbeam is provided with a first lifting lug, which is located near the first pin hole; the top of the diagonal brace is provided with a second lifting lug, which is located near the second pin hole.

3. The support system for construction of block 0 according to claim 2, characterized in that, Both the upper and lower embedded parts are provided with bracket structures at their bottoms.

4. The support system for construction of block 0 according to claim 3, characterized in that, Both the upper and lower embedded parts include two sets of mounting holes arranged side by side along their width direction, and each set of mounting holes includes a plurality of mounting holes spaced apart along the height direction of the upper embedded part.

5. The support system for construction of block 0 according to claim 4, characterized in that, The uppermost of the pre-embedded parts are fixed to the piers via precision-rolled threaded steel rods, while the lowermost of the pre-embedded parts are fixed to the piers via climbing cones.

6. The support system for construction of block 0 according to claim 5, characterized in that, The upper portion of the pre-embedded component is fixed to the pier by steel bars, and the lower portion of the pre-embedded component is fixed to the pier by climbing cones.

7. The support system for construction of block 0 according to claim 6, characterized in that, Each pair of diagonal braces in each of the triangular bracket groups are connected by a plurality of horizontally arranged connecting rods, which are spaced apart along the length of the diagonal braces.

8. The support system for construction of block 0 according to claim 7, characterized in that, Two adjacent triangular support groups at the same height are connected by horizontal diagonal bracing.

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