CN216640271U - High mound arc entablature light weight volume support system - Google Patents

High mound arc entablature light weight volume support system Download PDF

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Publication number
CN216640271U
CN216640271U CN202122494455.1U CN202122494455U CN216640271U CN 216640271 U CN216640271 U CN 216640271U CN 202122494455 U CN202122494455 U CN 202122494455U CN 216640271 U CN216640271 U CN 216640271U
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China
Prior art keywords
steel
arc
arch
main beam
tower
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CN202122494455.1U
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Chinese (zh)
Inventor
曾远
卢俊
古佩胜
杨毅辉
吴宝初
呙佳
张文朋
李岩
瞿明建
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China State Construction Engineering Corp Ltd CSCEC
China Construction Sixth Engineering Division Co Ltd
China State Construction Bridge Corp Ltd
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China State Construction Engineering Corp Ltd CSCEC
China Construction Sixth Engineering Division Co Ltd
China State Construction Bridge Corp Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/728Onshore wind turbines

Abstract

The utility model discloses a high pier arc-shaped upper cross beam light-weight bracket system which comprises an arc-shaped bridge tower, wherein a beam of the bridge tower is provided with a reserved hole penetrating through the arc-shaped bottom of the beam, the beam is provided with a dismounting system and a cable rope corresponding to the reserved hole, and a lower support frame positioned on the lower side of the arc-shaped bottom of the beam is arranged between the inner walls of tower columns of the bridge tower; an arched truss is arranged between the lower support frame and the arched bottom of the cross beam, the lower support frame comprises steel corbels, an upper main beam and a bottom main beam, the steel corbels are transversely and symmetrically fixedly arranged on the inner wall of the tower column, the steel corbels positioned on the upper side are fixedly connected with the upper main beam, and the steel corbels positioned on the lower side are fixedly connected with the bottom main beam; and an inclined strut steel pipe and an inclined strut parallel connection are fixedly connected between the two ends of the bottom main beam and the upper main beam. The utility model aims to provide a high pier arc-shaped support system which can reduce manual high-altitude welding work, has high turnover rate of sectional materials and light structure and is beneficial to construction and installation.

Description

High mound arc entablature light weight volume support system
Technical Field
The utility model relates to the technical field of high pier bridge engineering, in particular to a high pier arc-shaped upper cross beam light-weight bracket system.
Background
At present, for domestic high pier beam construction, a bracket form gradually replaces a traditional floor type steel pipe supporting system, and the economy and the safety are greatly improved. But the method is limited by the structural shape of the bridge tower beam, and the lightweight design and the assembly type construction of the bracket system of the beam with the large volume and the special-shaped structure are still the main research directions in the field of bridge construction. The design of the arc-shaped beam of the portal bridge tower has the characteristics of large volume, complex modeling and large size change, so that the technical difficulty of designing the high-bearing-capacity light-weight support meeting the construction load of the beam is very high. And according to the construction of the traditional on-site welding process, a large number of sectional materials are required to be processed manually, the time and the labor are consumed, a large number of structures need to be welded at high altitude, the welding quality and the construction safety risk are high, and the turnover utilization rate is low after a large number of sectional materials are cut off. Therefore, a high pier arc-shaped bracket system which can reduce manual high-altitude welding work, has high turnover rate of the section bar and light structure and is favorable for construction and installation is needed urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a high pier arc-shaped bracket system which can reduce manual high-altitude welding work, has high turnover rate of sectional materials and light structure and is beneficial to construction and installation.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a high pier arc upper beam light weight bracket system comprises an arc bridge tower, wherein a beam of the bridge tower is provided with a reserved hole penetrating through the arc bottom of the beam, the beam is provided with a dismounting system and a cable rope corresponding to the reserved hole, and a lower support frame positioned on the lower side of the arc bottom of the beam is arranged between the inner walls of tower columns of the bridge tower; an arched truss is arranged between the lower support frame and the arched bottom of the cross beam, the lower support frame comprises steel corbels, an upper main beam and a bottom main beam, the steel corbels are transversely and symmetrically fixedly arranged on the inner wall of the tower column, the steel corbels positioned on the upper side are fixedly connected with the upper main beam, and the steel corbels positioned on the lower side are fixedly connected with the bottom main beam; inclined strut steel pipes are fixedly connected between the two ends of the bottom main beam and the upper main beam, and inclined strut parallel connection is fixedly connected between the inclined strut steel pipes; the upper end surface of the upper main beam is fixedly provided with a dumping block at the end part and the connection part which is in parallel connection with the inclined strut, and the dumping block is provided with a longitudinal distribution beam which is supported at the bottom of the arched truss and is vertical to the upper main beam; the disassembling system is composed of a winch.
Furthermore, the arch truss is formed by connecting transverse, longitudinal and oblique arch frame rods through bolts, an arch ring is arranged at the top of the arch truss, an arch frame bottom beam is arranged at the bottom of the arch truss, the arch frame rods are formed by processing double-spliced channel steel, and the arch ring is formed by processing profile steel in an arched manner.
Furthermore, a horizontal supporting beam is arranged on the arched truss, and operating platforms are arranged on two sides of the arched truss through the supporting beam.
Furthermore, the steel corbel is composed of opposite-pulling steel boots, a shear force groove and a prestress hole channel are formed in the tower wall, the shear force groove is fixed to the steel boot portion of the steel corbel, finish-rolled deformed steel bars connected with the prestress hole channel are arranged at the top of the steel corbel, and all weld joints of the steel corbel are welded completely.
Furthermore, an arched upper beam bottom formwork is arranged at the arc-shaped bottom of the beam, longitudinal secondary distribution beams are arranged between the upper beam bottom formwork and the arch ring of the arched truss at intervals, and each longitudinal secondary distribution beam is composed of channel steel.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model adopts an assembled combined structure form of a steel corbel and an upper beam bottom template and adopts a construction method of factory prefabrication and on-site hoisting and assembling. The investment of bracket system materials is reduced to the maximum extent, the construction cost is reduced, meanwhile, the bolts are used for assembling all components to replace field welding, the labor cost and the high-altitude operation time are reduced, the operation efficiency is improved, the construction safety is ensured, the problems of insufficient prepressing load and difficult implementation of the high pier bracket commonly existing at present are effectively solved, and the safe and rapid construction of the main tower structure is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic structural view of a steel corbel according to the present invention;
FIG. 4 is a schematic view of the structure of the lower support frame of the present invention;
FIG. 5 is a schematic view of the construction of a drop block of the present invention;
FIG. 6 is a schematic diagram of the distribution structure of the longitudinal secondary distribution beams of the present invention;
FIG. 7 is a schematic structural view of the present invention in a lifted state;
fig. 8 is a schematic structural view of a segmented arched truss according to an embodiment of the present invention.
Reference numerals:
1-steel corbel, 2-bottom main beam, 3-diagonal steel pipe, 4-diagonal parallel connection, 5-upper main beam, 6-longitudinal distribution beam, 7-dumping block, 8-arch truss, 9-arch bottom beam, 10-arch ring, 11-arch rod piece, 12-longitudinal secondary distribution beam, 13-operation platform, 14-reserved hole, 15-disassembly system, 16-cable, 17-tower column, 18-iron box, 19-prestressed pore channel, 20-finish rolling deformed steel bar and 21-beam.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 6, a high pier arc upper beam light weight bracket system comprises an arc bridge tower, wherein a beam 21 of the bridge tower is provided with a reserved hole 14 penetrating through the arc bottom of the beam 21, the beam 21 is provided with a dismounting system 15 and a cable 16 corresponding to the reserved hole 14, and a lower support frame positioned on the lower side of the arc bottom of the beam 21 is arranged between the inner walls of tower columns 17 of the bridge tower; an arched truss 8 is arranged between the lower support frame and the arc-shaped bottom of the cross beam 21, the lower support frame comprises steel corbels 1, an upper main beam 5 and a bottom main beam 2, the steel corbels 1 are transversely and symmetrically fixedly arranged on the inner wall of the tower column 17, the steel corbels 1 on the upper side are fixedly connected with the upper main beam 5, and the steel corbels 1 on the lower side are fixedly connected with the bottom main beam 2; inclined strut steel pipes 3 are fixedly connected between the two ends of the bottom main beam 2 and the upper main beam 5, and inclined strut flat connections 4 are fixedly connected between the inclined strut steel pipes 3; the upper end surface of the upper main beam 5 is fixedly provided with a dumping block 7 at the end part and the connection part of the inclined strut parallel connection 4, and the dumping block 7 is provided with a longitudinal distribution beam 6 which is supported at the bottom of an arched truss 8 and is vertical to the upper main beam 5; the disassembling system 15 is composed of a winch; the dismantling system 15 is constituted by a winch.
The arched truss 8 is formed by connecting transverse, longitudinal and oblique arch frame rods 11 through bolts, an arch ring 10 is arranged at the top of the arched truss 8, an arch frame bottom beam 9 is arranged at the bottom of the arched truss 8, the arch frame rods 11 are formed by processing double-spliced channel steel, and the arch ring 10 is formed by processing profile steel in an arched mode. The arch truss 8 formed by splicing the arch frame rod 11, the arch ring 10 and the arch frame bottom beam 9 can reduce manual work for high-altitude welding work, the arch truss 8 can be manufactured in a blocking mode through bolt connection among all components, the components are convenient to respectively hoist and transport to the lower supporting frame for installation, and the bearing capacity of the arch truss 8 cannot be reduced. The horizontal supporting beam is arranged on the arched truss 8, the operating platforms 13 are installed on two sides of the arched truss 8 through the supporting beam, and the operating platforms 13 can be used for workers to carry out beam 21 pouring construction.
The steel corbel 1 is composed of opposite-pulling type steel boots, a shear groove and a prestress pore channel 19 are formed in the tower wall of the tower column 17, the shear groove is fixed with the steel boot portion of the steel corbel 1, finish-rolled deformed steel bars 20 connected with the prestress pore channel 19 are arranged on the top of the steel corbel 1, and all welding seams of the steel corbel 1 are welded in a full penetration mode. The steel corbel 1 with the boot-shaped structure is simple and clear in stress, can provide ultrahigh bearing capacity, can be prefabricated in a factory, and has the advantages of being convenient to install in a high-altitude field and small in construction risk.
The arched bottom of the crossbeam 21 is provided with an arched upper crossbeam bottom template, longitudinal secondary distribution beams 12 are arranged between the upper crossbeam bottom template and the arch rings 10 of the arched trusses 8 at intervals, and the longitudinal secondary distribution beams 12 are composed of channel steel. Since the bottom of the beam 21 is designed to be arched, an upper beam bottom formwork is also arranged at the top of the longitudinal secondary distribution beam 12 for arch adjustment. Longitudinal secondary distribution beams 12 are welded between the bottom template of the upper cross beam and the arch ring 10 at intervals, so that the bottom template of the upper cross beam and the arch ring 10 can be kept in an arch shape, and the integral bearing capacity of the support system is improved.
The installation method comprises the following steps:
firstly, according to a design drawing of tower column creeping formwork construction, a reserved shear groove and a pre-stressed duct 19 are transversely and symmetrically arranged at corresponding positions of the inner wall of a tower column 17, the shear groove is divided into an upper part and a lower part and used for installing two groups of steel corbels 1, an iron box 18 is used for pre-embedding a shear groove opening, the iron box 18 is composed of a steel plate and is the same as a steel shoe part of the steel corbel 1, sand is filled in the pre-embedded iron box 18, and the situation that the installation of the steel corbel 1 is influenced when concrete enters the groove opening in a pouring process is prevented.
Secondly, hoisting the steel corbel 1 to the shear groove of the tower column 17 by using a tower crane, placing the steel shoe part of the steel corbel 1 into the shear groove, enabling the steel corbel 1 to be tightly propped against the inner wall of the tower column 17, penetrating a finish-rolled deformed steel bar 20 connected with the prestress hole 19 from the top of the steel corbel 1 after the position of the steel corbel 1 is adjusted in place, and screwing nuts on two sides of the finish-rolled deformed steel bar 20.
Thirdly, the dismounting system 15 is utilized to hoist the bottom main beam 2, the inclined strut steel pipe 3, the inclined strut parallel connection 4 and the upper main beam 5 from bottom to top in sequence and is assembled into a lower supporting frame through flange and bolt connection, a dismounting block 7 and a longitudinal distribution beam 6 are arranged on the upper main beam 5, and the lower supporting frames are connected into a whole through the longitudinal distribution beam 6 vertical to the upper main beam 5. The lower support frame is prefabricated in a factory in a partitioning mode, a partitioning mode and a field assembling mode, all the blocks are connected in a flange mode, all the blocks are connected into a whole through bolts, and eight flange connections are arranged on the single lower support frame. The lower support frame is provided with four groups in the embodiment, two adjacent groups of lower support frames are connected into a whole through the inclined strut parallel connection 4, the unloading block 7 in the embodiment adopts a support unloading block disclosed in the Chinese utility model patent with the authorization publication number of CN206189273U and is used for bearing the weight of an arch truss 8, and then a longitudinal distribution beam 6 is arranged on the unloading block 7 to support and connect the bottom end of an arch bottom beam 9.
Hoisting an arched upper crossbeam bottom formwork at the arched bottom of a crossbeam 21 of the tower bridge, connecting the upper crossbeam bottom formwork with the arched bottom of the crossbeam 21 by using bolts, hoisting an arched truss 8 to the upper end surface of a lower support frame to fixedly connect the arch frame bottom formwork 9 with the longitudinal distribution beams 6, and welding the longitudinal secondary distribution beams 12 at equal intervals between the upper crossbeam bottom formwork and the arch rings 10. Longitudinal secondary distribution beams 12 are welded between the bottom template of the upper cross beam and the arch ring 10 at intervals, so that the bottom template of the upper cross beam and the arch ring 10 can be kept in an arch shape, and the integral bearing capacity of the support system is improved.
And fifthly, horizontally erecting a supporting beam on the installed arched truss 8, and installing operating platforms 13 on two sides of the arched truss 8 through the supporting beam for the worker to pour the beam 21 of the tower column 17.
Sixthly, tensioning and grouting the cross beam 21, disassembling the support system when the grouting and the same condition test piece meet the design value requirement, lifting and disassembling all the parts through a cable 16 of a disassembling system 15 from top to bottom according to the sequence of the arch truss 8, the unloading block 7, the upper main beam 5, the inclined strut parallel connection 4, the inclined strut steel pipe 3, the bottom main beam 2 and the steel bracket 1, and completing the disassembling work of the support system on the tower bridge.
When the arched truss 8 is made in segments, as shown in fig. 8, the cables 16, which can be tied in close proximity, are hoisted using a removal system 15. In this embodiment, the arch truss 8 is divided into eight blocks, and each block is manufactured in a block manner by a jig frame in a factory according to design drawings, and the internal rod pieces of each block are connected in the factory in a welding manner and are connected with each other by bolts after being transported to the site. The separately dismantled components can be reused, the turnover rate is high, the dismantling and hoisting are convenient and fast, the high-altitude operation time is shortened, the construction quality is guaranteed, and the safety risk is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. The utility model provides a high mound arc entablature light body volume support system, includes curved bridge tower, its characterized in that: a reserved hole (14) penetrating through the arc-shaped bottom of the cross beam (21) is formed in the cross beam (21) of the bridge tower, a dismounting system (15) and a cable rope (16) are arranged on the cross beam (21) corresponding to the reserved hole (14), and a lower support frame positioned on the lower side of the arc-shaped bottom of the cross beam (21) is arranged between the inner walls of the tower columns (17) of the bridge tower; an arched truss (8) is arranged between the lower support frame and the arc-shaped bottom of the cross beam (21), the lower support frame comprises steel corbels (1), an upper main beam (5) and a bottom main beam (2), the steel corbels (1) are transversely and symmetrically fixedly arranged on the inner wall of the tower column (17), the steel corbels (1) on the upper side are fixedly connected with the upper main beam (5), and the steel corbels (1) on the lower side are fixedly connected with the bottom main beam (2); inclined strut steel pipes (3) are fixedly connected between the two ends of the bottom main beam (2) and the upper main beam (5), and inclined strut parallel links (4) are fixedly connected between the inclined strut steel pipes (3); the upper end face of the upper main beam (5) is fixedly provided with a dumping block (7) at the end part and the connection part of the upper main beam and the inclined strut parallel connection (4), and the dumping block (7) is provided with a longitudinal distribution beam (6) which is supported at the bottom of the arched truss (8) and is vertical to the upper main beam (5); the dismantling system (15) is constituted by a winch.
2. The high pier curved upper beam light weight bracket system of claim 1, wherein: the arch truss is characterized in that the arch truss (8) is formed by connecting transverse, longitudinal and oblique arch frame rods (11) with bolts, an arch ring (10) is arranged at the top of the arch truss (8), an arch frame bottom beam (9) is arranged at the bottom of the arch truss (8), the arch frame rods (11) are formed by processing double-spliced channel steel, and the arch ring (10) is formed by processing profile steel arch bending.
3. The high pier curved upper beam light weight bracket system of claim 2, wherein: the horizontal supporting beams are arranged on the arched trusses (8), and the operating platforms (13) are arranged on the two sides of the arched trusses of the supporting beams.
4. The high pier curved upper beam light weight bracket system of claim 1, wherein: the steel bracket (1) comprises the counter-pulling steel boots, has seted up shear force groove and prestressing force pore canal (19) on the tower wall, and the steel boots position of shear force groove and steel bracket (1) is fixed, and the top of steel bracket (1) is provided with finish rolling screw-thread steel (20) that are connected with prestressing force pore canal (19), and the welding seam of steel bracket (1) all adopts full penetration welding.
5. The high pier curved upper beam light weight bracket system of any one of claims 1-4, wherein: the arc-shaped bottom of the beam (21) is provided with an arched upper beam bottom template, longitudinal secondary distribution beams (12) are arranged between the upper beam bottom template and arch rings (10) of the arch truss (8) at intervals, and the longitudinal secondary distribution beams (12) are composed of channel steel.
CN202122494455.1U 2021-10-15 2021-10-15 High mound arc entablature light weight volume support system Active CN216640271U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122494455.1U CN216640271U (en) 2021-10-15 2021-10-15 High mound arc entablature light weight volume support system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122494455.1U CN216640271U (en) 2021-10-15 2021-10-15 High mound arc entablature light weight volume support system

Publications (1)

Publication Number Publication Date
CN216640271U true CN216640271U (en) 2022-05-31

Family

ID=81730185

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122494455.1U Active CN216640271U (en) 2021-10-15 2021-10-15 High mound arc entablature light weight volume support system

Country Status (1)

Country Link
CN (1) CN216640271U (en)

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