CN112554064A - Installation method of few-bracket ultra-wide steel structure bridge - Google Patents
Installation method of few-bracket ultra-wide steel structure bridge Download PDFInfo
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- CN112554064A CN112554064A CN202011374125.2A CN202011374125A CN112554064A CN 112554064 A CN112554064 A CN 112554064A CN 202011374125 A CN202011374125 A CN 202011374125A CN 112554064 A CN112554064 A CN 112554064A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The application discloses a mounting method of a few-bracket ultra-wide steel structure bridge, which comprises the following steps: the beam section is divided into three parts, namely a tie beam, a bridge deck system and a cantilever section, transversely by taking the tie beam as a boundary, and the tie beam, the bridge deck system and the cantilever section are divided longitudinally respectively; the method comprises the following steps that (1) a support is erected, a support assembly is erected on a bearing surface, and the position of the support assembly is matched with the installation position of a tie beam, so that the support assembly can support the tie beam; hoisting the beam sections, hoisting the tie beams on the two sides to the corresponding support assemblies, and hoisting the bridge deck system between the two tie beams; the beam section is fixed, the bridge deck system and the tie beam are pre-positioned through the positioning piece and are welded and fixed, and the cantilever arm section is hoisted to the outer side of the tie beam and is welded and fixed with the tie beam. The support that needs in this application has solved among the correlation technique in the steel construction bridge installation is in large quantity, and the support utilization ratio is low, and construction cost is higher and the long problem of construction period.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a mounting method of a few-bracket ultra-wide steel structure bridge.
Background
With the continuous development of steel structure bridges in China, the smooth installation of a steel structure beam section becomes an important link of steel structure bridge construction, and since inland areas are limited by traffic transportation and cannot be hoisted in large sections like a marine transport ship, a more applicable construction scheme needs to be adopted in section division, transportation and installation. The support method construction is a construction process commonly used for mounting steel box girders, and the general support forms are two types: (1) the steel box girder is transversely cut into blocks, and if the steel box girder is completely transversely cut into blocks, the brackets need to be arranged in a row along the longitudinal direction at the distance of the width of the blocks and are arranged on two sides of the girder section to be used as a supporting structure of the steel box girder. (2) And (3) longitudinally cutting the steel box girder, if the steel box girder is completely longitudinally cut, arranging the brackets in a row along the distance of the width of the transverse cut, and arranging 2 rows of brackets on two sides of a welding line to be used as a supporting structure of the steel box girder. Therefore, no matter the transverse cutting block or the longitudinal cutting block in the related technology is adopted, a great number of supports are used, the construction cost is high, the utilization rate of the supports is low, and the construction period is long.
Aiming at the problems of large quantity of supports, low utilization rate of the supports, higher construction cost and long construction period in the installation process of steel structure bridges in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The main purpose of this application is to provide a few super wide steel structure bridge installation method of support to the support quantity that needs is many in the steel structure bridge installation among the solution correlation technique, and the support utilization ratio is low, and construction cost is higher and the long problem of construction period.
In order to achieve the purpose, the application provides a mounting method of a few-bracket ultra-wide steel structure bridge, and the mounting method of the few-bracket ultra-wide steel structure bridge comprises the following steps:
the beam section is divided into three parts, namely a tie beam, a bridge deck system and a cantilever arm section, transversely by taking the tie beam as a boundary, and then the tie beam, the bridge deck system and the cantilever arm section are divided longitudinally;
the method comprises the following steps that (1) a support is erected, a support assembly is erected on a bearing surface, and the position of the support assembly is matched with the installation position of a tie beam, so that the support assembly can support the tie beam;
hoisting the beam sections, namely hoisting the tie beams on the two sides to the corresponding support assemblies, and hoisting the bridge deck system between the two tie beams;
the beam section is fixed, the bridge deck system and the tie beam are pre-positioned through the positioning piece and are welded and fixed, and the cantilever arm section is hoisted to the outer side of the tie beam and is welded and fixed with the tie beam.
Further, the deck system between each two opposite tie beams is divided into 5 pieces in the longitudinal direction.
Furthermore, the bridge deck system is divided into blocks along the longitudinal direction which is not more than 5m, and each block section at least comprises two diaphragm plates.
Further, the width of the bridge deck divided in the transverse direction was 18.1 m.
Further, the tie beam has a division width of 3.7m in the transverse direction and a division length of not more than 20m in the longitudinal direction.
Furthermore, the dividing width of the picking arm section along the transverse direction is 4.5m, and the dividing length along the longitudinal direction is not more than 20 m.
Furthermore, in the division of the beam sections, the distance between the blocking positions and the diaphragm plate is more than 20 cm.
Further, the bracket component is arranged into a square bracket.
In the embodiment of the application, the bridge deck system is divided into three parts, namely a tie beam, a bridge deck system and a cantilever arm section, transversely by using the tie beam as a boundary through beam section partitioning, and then the tie beam, the bridge deck system and the cantilever arm section are divided longitudinally; the method comprises the following steps that (1) a support is erected, a support assembly is erected on a bearing surface, and the position of the support assembly is matched with the installation position of a tie beam, so that the support assembly can support the tie beam; hoisting the beam sections, namely hoisting the tie beams on the two sides to the corresponding support assemblies, and hoisting the bridge deck system between the two tie beams; the roof beam section is fixed, carry out the prepositioning between bridge floor system and the tie beam through the setting element, and weld fixture carries out weld fixture, will choose the arm section hoist and mount to the tie beam outside and carry out weld fixture with the tie beam, it only sets up the bracket component to the tie beam of both sides and supports to have reached, and lie in the bridge floor system and choose the arm section then rely on the tie beam to carry out the purpose of supporting, thereby realized the use that reduces the bracket component, improve the utilization ratio of bracket component, use cost's technical effect has been reduced, and then it is many to have solved the support that needs in the steel structure bridge installation among the correlation technique, the support utilization ratio is low, construction cost is higher and the long problem of construction period.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic flow diagram according to an embodiment of the present application;
FIG. 2 is a schematic top view of a beam segment division according to an embodiment of the present application;
FIG. 3 is a schematic side view of a beam segment division according to an embodiment of the present application;
wherein, 1 bracket component, 2 choose the arm section, 3 tie beams, 4 bridge floor systems.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 3, an embodiment of the present application provides a method for installing a few-bracket ultra-wide steel structure bridge, where the method for installing the few-bracket ultra-wide steel structure bridge includes the following steps: s10 dividing the beam section into three parts, namely a tie beam 3, a bridge deck system 4 and a cantilever arm section 2, transversely by taking the tie beam 3 as a boundary, and then dividing the tie beam 3, the bridge deck system 4 and the cantilever arm section 2 longitudinally; s20, erecting a bracket assembly 1 on the bearing surface, wherein the position of the bracket assembly 1 is matched with the installation position of the tie beam 3, so that the bracket assembly 1 can support the tie beam 3; s30, beam sections are hoisted, the tie beams 3 on the two sides are hoisted to the corresponding support assemblies 1, and then the bridge deck system 4 is hoisted to the position between the two tie beams 3; s40, fixing the beam section, pre-positioning the bridge deck system 4 and the tie beam 3 through a positioning piece, welding and fixing, hoisting the cantilever section 2 to the outer side of the tie beam 3 and welding and fixing the cantilever section and the tie beam 3.
In the embodiment, the beam sections are divided into beams and longitudinal beams according to the structure, wherein the beams are bridge deck systems 4, the longitudinal beams are tie beams 3 and cantilever arm sections 2, the longitudinal beams on two sides are supported by using supports, the middle bridge deck system 4 is transversely divided into blocks and supported by using the longitudinal beams, so that the utilization efficiency of the supports is further improved, the construction period and the cost are saved, specifically, the beam sections are transversely divided into three parts by using the tie beams 3 as a boundary, the three parts are respectively the tie beams 3, the bridge deck systems 4 and the cantilever arm sections 2, wherein the tie beams 3 and the cantilever arm sections 2 are both positioned on two sides of the bridge deck systems 4, the block positions are more than 20cm away from the transverse partition plates, the bridge deck systems 4 are divided into blocks along the longitudinal direction and are not more than 5m, each block at least comprises two transverse partition plates, a single beam exists in each block, temporary fixing is needed before installation, the erection of the support assembly 1 is carried out on the construction site after the block division, the position, make bracket component 1 and tie beam 3 direct contact and atress, other positions need not set up the support, then hoist bridge deck system 4 to between two tie beams 3 through the portal crane again, accessible horse board carries out pre-positioning back welded fastening for bridge deck system 4 supports through tie beam 3 and bracket component 1 that is located tie beam 3 lower extreme, compares with traditional mounting means, need not set up the support in bridge deck system 4's below, thereby a large amount of use amount that have reduced support in the work progress. Thereby realized reducing bracket component 1's use, improved bracket component 1's utilization ratio, reduced use cost's technological effect, and then solved among the correlation technique support quantity that needs in the steel construction bridge installation is many, the support utilization ratio is low, construction cost is higher and the long problem of construction period.
As shown in fig. 1 to 3, the bridge deck has a division width in the transverse direction of 18.1m, the tie beams 3 have a division width in the transverse direction of 3.7m, a division length in the longitudinal direction of 20m, the bridge deck 4 is divided into blocks in the longitudinal direction of 5m, and the length of each tie beam 3 is 20m, so that the number of the bridge deck 4 between each two opposite tie beams 3 can be 4, and on the premise of satisfying transportation and hoisting, the use of the bracket assembly 1 is further reduced, and the economic benefit is improved. The cantilever arm section 2 is 4.5m in transverse dividing width, the length of the cantilever arm section is not more than 20m in longitudinal dividing length, and the support component 1 is arranged to be a square support.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A mounting method for a few-bracket ultra-wide steel structure bridge is characterized by comprising the following steps:
the beam section is divided into three parts, namely a tie beam, a bridge deck system and a cantilever section, transversely by taking the tie beam as a boundary, and the tie beam, the bridge deck system and the cantilever section are divided longitudinally respectively;
the method comprises the following steps that (1) a support is erected, a support assembly is erected on a bearing surface, and the position of the support assembly is matched with the installation position of a tie beam, so that the support assembly can support the tie beam;
hoisting the beam sections, namely hoisting the tie beams on the two sides to the corresponding support assemblies, and hoisting the bridge deck system between the two tie beams;
the beam section is fixed, the bridge deck system and the tie beam are pre-positioned through the positioning piece and are welded and fixed, and the cantilever arm section is hoisted to the outer side of the tie beam and is welded and fixed with the tie beam.
2. The method for installing a few-bracket ultra-wide steel structure bridge according to claim 1, wherein the bridge deck system between each two opposite tie beams is divided into 5 blocks along the longitudinal direction.
3. The method for installing the few-bracket ultra-wide steel structure bridge according to claim 2, wherein the bridge deck system is partitioned along the longitudinal direction by no more than 5m, and each block section at least comprises two diaphragm plates.
4. The method for installing the few-bracket ultra-wide steel structure bridge according to claim 3, wherein the dividing width of the bridge deck in the transverse direction is 18.1 m.
5. The installation method of the few-bracket ultra-wide steel structure bridge as recited in claim 3, wherein the width of the tie beam divided along the transverse direction is 3.7m, and the length of the tie beam divided along the longitudinal direction is not more than 20 m.
6. The installation method of the bridge with the few brackets and the ultra-wide steel structure as claimed in claim 3, wherein the division width of the cantilever sections along the transverse direction is 4.5m, and the division length along the longitudinal direction is not more than 20 m.
7. The installation method of the few-bracket ultra-wide steel structure bridge according to any one of claims 1 to 6, wherein in the division of the beam sections, the distance between the partition positions and the diaphragm is more than 20 cm.
8. The installation method of a few-bracket ultra-wide steel structure bridge according to claim 7, wherein the bracket assembly is configured as a square bracket.
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| CN202011374125.2A CN112554064B (en) | 2020-11-30 | 2020-11-30 | Installation method of few-bracket ultra-wide steel structure bridge |
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| CN202011374125.2A CN112554064B (en) | 2020-11-30 | 2020-11-30 | Installation method of few-bracket ultra-wide steel structure bridge |
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