CN112554064B - 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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- CN112554064B CN112554064B CN202011374125.2A CN202011374125A CN112554064B CN 112554064 B CN112554064 B CN 112554064B CN 202011374125 A CN202011374125 A CN 202011374125A CN 112554064 B CN112554064 B CN 112554064B
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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
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Abstract
The application discloses few-support ultra-wide steel structure bridge installation method, which 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 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, 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 the steel construction bridge installation is many in this application has solved the correlation technique, 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 include two types: (1) and transversely cutting the steel box girder, and if the steel box girder is completely transversely cut, arranging the brackets in a row along the longitudinal direction at the distance of the width of the cut blocks, and arranging the brackets at 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, wherein if the steel box girder is completely longitudinally cut, the brackets need to be arranged in a row along the distance of the width of the transverse cut, and 2 rows of brackets are arranged on two sides of the 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 of (1) erecting a bracket assembly on a bearing surface, wherein the position of the bracket assembly is matched with the installation position of a tie beam, so that the bracket 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 width of the arm picking section in the transverse direction is 4.5m, and the length of the arm picking section in 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.
Furthermore, the bracket component is a square bracket.
In the embodiment of the application, through beam section blocking, the bridge deck system is divided into three parts transversely by taking the tie beam as a boundary, namely the tie beam, the bridge deck system and the cantilever arm section, and then the tie beam, the bridge deck system and the cantilever arm 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 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 the description of the exemplary embodiments of the present application are provided for explaining the present application and do not constitute an undue limitation on the present application. 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 obtained by a person of ordinary skill in the art based on the embodiments in the present application 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 in order to facilitate the description of the embodiments of the application herein.
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 in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. 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 the case may be.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to fig. 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 a 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 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 section is divided into a beam and a longitudinal beam according to the structure, wherein the beam is a bridge deck system 4, the longitudinal beam is a tie beam 3 and a cantilever arm section 2, the longitudinal beams on two sides are supported by using a bracket, the bridge deck system 4 in the middle is transversely divided into blocks and supported by using the longitudinal beam, so that the utilization efficiency of the bracket is further improved, the construction period and the cost are saved, concretely, the beam section is divided into three parts by using the tie beam 3 as a boundary, the three parts are respectively the tie beam 3, the bridge deck system 4 and the cantilever arm section 2, wherein the tie beam 3 and the cantilever arm section 2 are both positioned on two sides of the bridge deck system 4, the block positions are more than 20cm away from the cross partition plate, the bridge deck system 4 is divided into blocks along the longitudinal direction which is not more than 5m, at least two cross partition plates are arranged in each block, a single beam exists in each block, temporary fixing is required before installation, the erection of the bracket assembly 1 is carried out on the construction site after the block division is finished, the position of the bracket assembly 1 is matched with the position of the tie beam 3, make bracket component 1 and tie beam 3 direct contact and atress, other positions need not set up the support, then hoist bridge floor system 4 to between two tie beams 3 through the portal crane, accessible horse block carries out pre-positioning back welded fastening for bridge floor 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 floor 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 that needs in the steel construction bridge installation in large quantity, 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 each tie beam 3 has a length of 20m, so that the bridge deck 4 between each two opposite tie beams 3 can be divided into 4 blocks, 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. Choose arm section 2 and be 4.5m along horizontal division width, be no longer than 20m along fore-and-aft division length, bracket component 1 sets up to the style of calligraphy 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 arm section, transversely by taking the tie beam as a boundary, and the tie beam, the bridge deck system and the cantilever arm section are divided longitudinally;
the method comprises the following steps of (1) erecting a bracket assembly on a bearing surface, wherein the position of the bracket assembly is matched with the installation position of a tie beam, so that the bracket 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 method for installing the few-bracket ultra-wide steel structure bridge according to claim 3, wherein the cantilever section is divided into 4.5m in width along the transverse direction and is divided into not more than 20m in length along the longitudinal direction.
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 the few-bracket ultra-wide steel structure bridge according to claim 7, wherein the bracket assembly is a square bracket.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN112554064B true CN112554064B (en) | 2022-07-26 |
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| FR2734287B1 (en) * | 1995-05-19 | 1997-12-12 | Gtm | CONCRETE APRON BRIDGE WITHOUT METAL FRAMEWORK |
| JP3818020B2 (en) * | 2000-05-31 | 2006-09-06 | 鹿島建設株式会社 | Cross-section precast segment method |
| JP3579897B1 (en) * | 2003-04-17 | 2004-10-20 | 大成建設株式会社 | Construction method of split bridge type traffic route and split bridge type traffic route |
| KR100734418B1 (en) * | 2006-10-27 | 2007-07-03 | 케이블텍 주식회사 | The upper girder segment making yard of bridge using launching wall, and the incremental launching method of bridge with typical section and widen section using that |
| CN108978484A (en) * | 2018-08-23 | 2018-12-11 | 中交路桥建设有限公司 | A kind of curved bridge steel box-girder sliding method assembling and construction method |
| CN109594474A (en) * | 2018-10-29 | 2019-04-09 | 合肥市公路桥梁工程有限责任公司 | A kind of limited bracket construction method of Long span S-shaped steel box-girder |
| CN109338896B (en) * | 2018-11-28 | 2020-12-01 | 中国铁建大桥工程局集团有限公司 | Construction method of broad-width concrete PK box girder support system |
| CN110387822B (en) * | 2019-06-25 | 2024-04-26 | 浙江欣捷建设有限公司 | Cast-in-situ bent cap assembly type steel pipe support and construction method thereof |
| CN110644349A (en) * | 2019-10-31 | 2020-01-03 | 山东省交通规划设计院 | Superstructure for wide box girder and short tower cable-stayed bridge and construction method |
| CN111254804A (en) * | 2020-02-18 | 2020-06-09 | 中交路桥建设有限公司 | Construction method of steel box girder bridge of overpass highway |
| CN211772741U (en) * | 2020-03-02 | 2020-10-27 | 甘肃省交通规划勘察设计院股份有限公司 | Large-span variable-width corrugated web steel box-concrete continuous beam bridge |
| CN111472283B (en) * | 2020-04-23 | 2021-06-18 | 中交路桥建设有限公司 | Construction method and structural system for ensuring installation accuracy of steel box girder of cable-stayed bridge |
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