Bracket system for construction of No.0 block and use method of bracket system

Abstract

A support system for construction of a No.0 block relates to the technical field of bridge construction, and is characterized in that connecting components of a support are connected through 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 long-time exposure of operators to dangerous environments 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. The embodiment of the invention further provides a using method of the support system for 0 # block construction, operation is easy and convenient, efficiency is high, the construction period can be effectively shortened, and construction safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a support system for No. 0 block construction and a method of using the support system. Background Art

[0002] Block 0 is the first concrete unit to be poured during the cantilever construction of a long-span continuous beam bridge. It is located directly above the pier and is the reference fulcrum for subsequent segment construction. The bracket is an essential component of the construction process of Block 0. The bracket is fixed on the pier to support the formwork, brackets and concrete weight extending on both sides of the pier.

[0003] In the prior art, when constructing the cast-in-place concrete section of block 0 on the top of the pier, a pre-embedded climbing cone is conventionally used to set the bracket, and the components of the cast-in-place load-bearing bracket are welded to the bracket. Although this process is mature and reliable, it still has the following problems: First, because of the welding method, the operation is complicated and the construction period is long when installing and removing the components, and the construction efficiency is low; second, because it is an aerial operation, the long-term construction safety hazard is large and it is easy to induce safety accidents; third, the existing bracket components are complex to connect, and it is difficult to determine the force mode of each structural component, which is not conducive to safety verification; finally, the existing pre-embedded climbing cone is subjected to both shear and tension at the same time, and the force mode is unfavorable. Summary of the invention

[0004] The purpose of the present invention is to provide a support system for No. 0 block construction, which has a novel structure and is easy to operate, can realize rapid installation and disassembly of the support, shorten the construction period, and improve construction safety.

[0005] Another object of the present invention is to provide a method for using a support system for No. 0 block construction, which is simple and convenient to operate, highly efficient, and can effectively shorten the construction period.

[0006] The embodiment of the present invention is achieved as follows: A support system for No. 0 block construction comprises a plurality of triangular support groups spaced apart on a bridge pier, each triangular support group being composed of a pair of triangular supports, each triangular support comprising a cross beam, an oblique support rod, an upper embedded part and a lower embedded part; the upper embedded part and the lower embedded part being spaced apart along the height direction of the bridge pier, a first ear plate being arranged on the top of the upper embedded part, a first pin hole being arranged at one end in the length direction of the cross beam, and being hinged to the first ear plate through a pin shaft; a second ear plate being arranged on the top of the lower embedded part, a third ear plate being arranged at the bottom of the cross beam, a second pin hole being arranged at one end in the length direction of the oblique support rod, and a third pin hole being arranged at the other end, and being hinged to the second ear plate and the third ear plate respectively through a pin shaft.

[0007] Furthermore, in other preferred embodiments of the present invention, a first lifting ear is provided at the bottom of the crossbeam, and the first lifting ear is provided close to the first pin hole; a second lifting ear is provided at the top of the diagonal brace, and the second lifting ear is provided close to the second pin hole.

[0008] Furthermore, in other preferred embodiments of the present invention, the bottoms of the upper embedded parts and the lower embedded parts are both provided with corbel structures.

[0009] Furthermore, in other preferred embodiments of the present invention, the upper embedded part and the lower embedded part each include two mounting hole groups arranged side by side along the width direction thereof, and each mounting hole group includes a plurality of mounting holes arranged at intervals along the height direction of the upper embedded part.

[0010] Furthermore, in other preferred embodiments of the present invention, the upper plurality of mounting holes of the upper embedded part are fixed to the bridge pier through precision-rolled threaded steel rods, and the lower plurality of mounting holes are fixed to the bridge pier through climbing cones.

[0011] Furthermore, in other preferred embodiments of the present invention, the upper plurality of mounting holes of the lower embedded part are fixed to the bridge pier via steel rods, and the lower plurality of mounting holes are fixed to the bridge pier via climbing cones.

[0012] Furthermore, in other preferred embodiments of the present invention, a pair of diagonal support rods of each triangular support group are connected by a plurality of horizontally arranged connecting rods, and the plurality of connecting rods are arranged at intervals along the length direction of the diagonal support rods.

[0013] Furthermore, in other preferred embodiments of the present invention, two adjacent triangular bracket groups located at the same height are connected by a parallel diagonal brace.

[0014] A method for using the above-mentioned No. 0 block construction support system, comprising: S1. Install upper embedded parts and lower embedded parts on the pier; S2. The third ear plate of the beam and the third pin hole of the diagonal brace are fixedly connected by a latch; S3. Hoist the connected beams and diagonal braces to the upper and lower embedded parts; S4. Connect the first ear plate of the upper embedded member and the first pin hole of the beam through a latch; connect the second ear plate of the lower embedded member and the second pin hole of the diagonal brace through a latch.

[0015] The beneficial effects of the embodiments of the present invention are: The embodiment of the present invention provides a support system for No. 0 block construction, which connects the connecting components of the support through pins, simplifies the connection method between the components, simplifies the installation and removal process, improves efficiency, reduces the time of high-altitude operations, and avoids workers from being exposed to dangerous environments for a long time and causing safety accidents. In addition, it clarifies the force mode of each structural component, and it is advisable to adopt a statically determinate structure to facilitate safety verification. Different combined force modes are adopted according to the difference in support reaction forces provided by the embedded parts to avoid the embedded parts climbing cone being subjected to both shear and tension at the same time. The embodiment of the present invention also provides a method for using the above-mentioned support system for No. 0 block construction, which is simple and convenient to operate, highly efficient, can effectively shorten the construction period, and improve construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of a support system for No. 0 block construction provided by an embodiment of the present invention; Figure 2 A schematic diagram of a triangular support group of a support system for No. 0 block construction provided by an embodiment of the present invention; Figure 3 An enlarged schematic diagram of a support system for No. 0 block construction provided by an embodiment of the present invention at position III; Figure 4 An enlarged schematic diagram of a support system for No. 0 block construction provided by an embodiment of the present invention at position IV; Figure 5 This is an enlarged schematic diagram of a support system for No. 0 block construction provided by an embodiment of the present invention at position V; Figure 6 A schematic diagram of the installation of the upper embedded parts of a support system for No. 0 block construction provided by an embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of the lower embedded parts of a support system for No. 0 block construction provided in an embodiment of the present invention.

[0018] Icons: 100-Block 0 construction support system; 101-triangle support group; 102-triangle support; 110-crossbeam; 111-third ear plate; 112-first lifting ear; 113-stiffening plate; 120-diagonal brace; 121-second lifting ear; 122-connecting rod; 130-upper embedded part; 131-first ear plate; 140-lower embedded part; 141-second ear plate; 150-pin; 160-corbel structure; 170-mounting hole; 180-parallel diagonal brace; 200-Block 0. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Example

[0024] This embodiment provides a support system 100 for No. 0 block construction and a method thereof, referring to Figure 1 As shown, the support system 100 for construction of block 0 includes a plurality of triangular support groups 101 spaced apart on the pier.

[0025] Each of the triangular bracket groups 101 is composed of a pair of triangular brackets 102. Figure 2 As shown, the triangular bracket 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 arranged at intervals along the height direction of the pier, a first ear plate 131 is arranged on the top of the upper embedded part 130, and a first pin hole is arranged at one end in the length direction of the crossbeam 110, which can be hinged to the first ear plate 131 through a pin shaft (see Figure 3 ); A second ear plate 141 is provided on the top of the lower embedded part 140, a third ear plate 111 is provided on the bottom of the cross beam 110, a second pin hole is provided at one end of the diagonal brace 120 in the length direction, and a third pin hole is provided at the other end, which can be hinged to the second ear plate 141 and the third ear plate 111 respectively through a pin shaft (see Figure 4~Figure 5 ). All major components are connected by pins, which greatly simplifies the installation and removal process, effectively improves construction efficiency, reduces the exposure time of high-altitude operations, and improves construction safety.

[0026] Furthermore, if Figure 2 and Figure 3As shown, a first lifting lug 112 is provided at the bottom of the crossbeam 110, and the first lifting lug 112 is provided close to the first pin hole; a second lifting lug 121 is provided at the top of the diagonal brace 120, and the second lifting lug 121 is provided close to the second pin hole. During the construction process, the first lifting lug 112 and the second lifting lug 121 play a role of temporary fixing, and a steel wire rope can be used to pass through the first lifting lug 112 and the second lifting lug 121, so as to avoid swinging between components during the lifting process, and facilitate connection and fixing with the upper embedded part 130 and the lower embedded part 140.

[0027] The bottom of the upper embedded part 130 and the bottom of the lower embedded part 140 are both provided with a bracket structure 160. The bracket structure 160 can strengthen the supporting effect of the upper embedded part 130 and the lower embedded part 140 and improve the overall stability.

[0028] Further, the upper embedded part 130 and the lower embedded part 140 each include two mounting hole groups arranged side by side along the width direction thereof, and each mounting hole group includes a plurality of mounting holes 170 arranged at intervals along the height direction of the upper embedded part 130. In this embodiment, each mounting hole group includes four mounting holes 170.

[0029] For the upper embedded part 130, if Figure 6 As shown, the two upper mounting holes 170 are fixed to the bridge piers through fine-rolled threaded steel rods, and the two lower mounting holes 170 are fixed to the bridge piers through climbing cones. The fine-rolled threaded steel rods are made of 32mm diameter PSB930 profiles, with an anchoring length of 1.2m. The fine-rolled threaded steel rods and the anchoring ends use 20cm PVC sleeves, and the remaining length of the fine-rolled threaded steel rods is directly anchored inside the concrete. The climbing cone is of M36-20 model, with a nut material of 40Cr, a screw material of 45# steel, and an anchoring depth of 500mm. The fine-rolled threaded steel rods play a tensile role, while the climbing cones play a shearing role.

[0030] Further, for the lower embedded part 140, if Figure 7 As shown, the two upper mounting holes 170 are fixed to the bridge piers through steel rods, and the two lower mounting holes 170 are fixed to the bridge piers through climbing cones. The steel rod adopts 40mm diameter Q345 profile to ensure the anchoring length of 0.6m, and is directly anchored into the concrete. The climbing cone adopts M36-20 model, the nut material is 40Cr, the screw material is 45# steel, and the anchoring depth is 500mm. Similarly, the steel rod plays a tensile role, while the climbing cone plays a shear role. The present invention uses different anchors to separate the tensile and shear effects, avoiding the unfavorable stress mode of traditional anchors being subjected to both shear and tension at the same time. At the same time, according to the difference in the support reaction force provided by the upper embedded part 130 and the lower embedded part 140, the present invention also specifically adopts different combined force modes to provide more scientific and reliable connection support.

[0031] In addition, if Figure 1 As shown, a pair of diagonal braces 120 of each triangular bracket group 101 are connected by a plurality of horizontally arranged connecting rods 122, and the plurality of connecting rods 122 are arranged at intervals along the length direction of the diagonal braces 120. A ladder-like structure is formed between the plurality of connecting rods 122, which is convenient for operators to go up and down as a temporary passage.

[0032] Two adjacent triangular support groups 101 at the same height are connected by a flat diagonal brace 180, thereby further improving the overall strength of the entire No. 0 block construction support system 100.

[0033] This embodiment also provides a method for using the No. 0 block construction support system 100, which includes: S1. Install the upper embedded part 130 and the lower embedded part 140 on the pier.

[0034] S2. The third ear plate 111 of the cross beam 110 and the third pin hole of the diagonal brace 120 are fixedly connected by the latch 150 .

[0035] S3. The connected cross beam 110 and diagonal brace 120 are hoisted to the upper embedded part 130 and the lower embedded part 140. During the hoisting process, a steel wire rope is passed through the first hoisting lug 112 and the second hoisting lug 121 to prevent swinging between the components during the hoisting process.

[0036] S4. The first ear plate 131 of the upper embedded member 130 and the first pin hole of the beam 110 are connected by the latch 150; the second ear plate 141 of the lower embedded member 140 and the second pin hole of the diagonal brace 120 are connected by the latch 150.

[0037] In addition, when disassembling the No. 0 construction support system 100, the following steps are included: S1. Use a steel wire rope to pass through the first lifting lug 112 and the second lifting lug 121 to temporarily support the cross beam 110 and the diagonal brace rod 120 during the removal process to prevent the entire bracket from suddenly becoming unstable during the removal process.

[0038] S2. Temporary supports are provided for the cross beam 110 and the diagonal brace 120 , and the latches 150 at the first ear plate 131 and the second ear plate 141 are removed. When the latches 150 at the second ear plate 141 are removed, the staff can go up and down through the temporary passage formed by the connecting rod 122 .

[0039] S3. Lower the entire triangular support assembly 101 to the ground, remove the latch 150 at the third ear plate 111, and recycle the cross beam 110 and the diagonal support rod 120 for reuse.

[0040] In summary, the embodiment of the present invention provides a support system 100 for No. 0 block construction, which connects the connecting components of the support through a latch 150, simplifies the connection method between the components, simplifies the installation and removal process, improves efficiency, reduces the time of high-altitude operations, and avoids workers from being exposed to dangerous environments for a long time and causing safety accidents. In addition, it clarifies the force mode of each structural component, and it is advisable to adopt a statically determinate structure to facilitate safety verification. Different combined force modes are adopted according to the difference in support reaction forces provided by the embedded parts to avoid the embedded parts climbing cone being subjected to both shear and tension at the same time. The embodiment of the present invention also provides a method for using the above-mentioned support system 100 for No. 0 block construction, which is simple and convenient to operate, highly efficient, and can effectively shorten the construction period and improve construction safety.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A support system for No. 0 block construction, characterized in that: It comprises a plurality of triangular bracket groups which are arranged at intervals on the piers, each of the triangular bracket groups is composed of a pair of triangular brackets, and the triangular brackets each comprise a cross beam, a diagonal brace, 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 pier, a first ear plate is arranged on the top of the upper embedded part, a first pin hole is arranged on one end in the length direction of the cross beam, and the upper embedded part can be hinged to the first ear plate through a pin shaft; a second ear plate is arranged on the top of the lower embedded part, a third ear plate is arranged on the bottom of the cross beam, a second pin hole is arranged on one end in the length direction of the diagonal brace, and a third pin hole is arranged on the other end, and the upper embedded part can be hinged to the second ear plate and the third ear plate respectively through a pin shaft.

2. The support system for No. 0 block construction according to claim 1 is characterized in that: A first lifting lug is arranged at the bottom of the crossbeam, and the first lifting lug is arranged close to the first pin hole; a second lifting lug is arranged at the top of the diagonal brace, and the second lifting lug is arranged close to the second pin hole.

3. The support system for No. 0 block construction according to claim 2 is characterized in that: The bottoms of the upper embedded part and the lower embedded part are both provided with a corbel structure.

4. The support system for No. 0 block construction according to claim 3 is characterized in that: The upper embedded part and the lower embedded part each include two mounting hole groups arranged side by side along the width direction thereof, and each mounting hole group includes a plurality of mounting holes arranged at intervals along the height direction of the upper embedded part.

5. The support system for No. 0 block construction according to claim 4 is characterized in that: The upper plurality of mounting holes of the upper embedded part are fixed to the bridge pier through precision-rolled threaded steel rods, and the lower plurality of mounting holes are fixed to the bridge pier through climbing cones.

6. The support system for No. 0 block construction according to claim 5, characterized in that: The upper plurality of mounting holes of the lower embedded part are fixed to the bridge pier via steel rods, and the lower plurality of mounting holes are fixed to the bridge pier via climbing cones.

7. The support system for No. 0 block construction according to claim 6, characterized in that: A pair of the diagonal support rods of each triangular support group are connected by a plurality of horizontally arranged connecting rods, and the plurality of connecting rods are arranged at intervals along the length direction of the diagonal support rods.

8. The support system for No. 0 block construction according to claim 7 is characterized in that: Two adjacent triangular bracket groups located at the same height are connected by a parallel diagonal brace.

9. A method for using the No. 0 block construction support system according to any one of claims 1 to 8, characterized in that: include: S1. Installing the upper embedded member and the lower embedded member on the pier; S2. The third ear plate of the beam and the third pin hole of the diagonal brace are fixedly connected by a pin; S3. The connected beam and the diagonal brace are hoisted to the upper embedded member and the lower embedded member; S4. The first pin hole of the first ear plate and the first beam of the upper embedded member is connected by a pin; The second ear plate of the lower embedded part and the second pin hole of the diagonal brace are connected by a pin.

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