CN113668398A - Construction method of river-crossing steel structure arch bridge - Google Patents
Construction method of river-crossing steel structure arch bridge Download PDFInfo
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- CN113668398A CN113668398A CN202110969115.1A CN202110969115A CN113668398A CN 113668398 A CN113668398 A CN 113668398A CN 202110969115 A CN202110969115 A CN 202110969115A CN 113668398 A CN113668398 A CN 113668398A
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Abstract
The invention relates to a method for constructing a cross-river steel structure arch bridge, which comprises the steps of firstly erecting a channel trestle into a river on two banks, erecting a crawler crane construction channel along the design position of the bridge, wherein the construction channel adopts steel pipe piles as lower supports, directly utilizing a cross beam of the steel structure bridge as a distribution beam of the construction channel, paving a bridge deck on the cross beam, utilizing the crawler crane to install a longitudinal beam of the steel structure bridge on the construction channel, then erecting arch rib mounting supports at two ends of the cross beam and installing arch ribs, and finally connecting slings between the arch ribs and the longitudinal beam. The construction process is simple and the efficiency is high; the construction equipment mainly adopts the crawler crane, does not need to invest a large-scale floating crane, can greatly reduce the construction cost, is not limited by the height of the water level of the river channel, and is favorable for ensuring the construction period.
Description
Technical Field
The invention belongs to the technical field of steel structure arch bridge construction, and particularly relates to a river (river) -crossing large-span steel structure arch bridge construction method.
Background
The steel structure arch bridge is not provided with piers, depends on arch ribs to suspend the bridge deck system through slings, has strong spanning capability, does not influence navigation, and is widely applied to river (river) bridge spanning construction. At present, a common method for constructing a large-span river-crossing steel structure arch bridge is to mount steel arch ribs by using a large floating crane, and then to hoist longitudinal beams (steel structure bridge main beams) and cross beams by using the floating crane after the arch ribs are erected; or firstly adopting a lifting method to install arch ribs, and then adopting a floating crane to install main beams and cross beams. The two methods both need to invest in large-scale floating cranes, and the latter method needs to additionally erect arch rib lifting supports, so that the construction cost is high, and the large-scale floating crane is easily limited by the river water level in the dry season, and the construction period cannot be guaranteed.
Disclosure of Invention
The invention aims to solve the problems and provides a construction method of a large-span river-crossing steel structure arch bridge with less equipment investment and low construction cost.
The technical scheme of the invention is as follows:
a construction method of a river-crossing steel structure arch bridge is characterized by comprising the following steps:
(1) respectively erecting a channel trestle in the river at the position, close to the design position of the bridge, of the two banks, and respectively erecting a section of construction channel at the two ends of the design position of the bridge along the bridge direction; the channel trestle and the construction channel both adopt steel pipe piles as lower supports, wherein the construction channel adopts a Bailey beam which is erected on the top of the steel pipe pile in the bridge direction as a bearing beam, a cross beam of the steel structure bridge is erected on the Bailey beam in the transverse bridge direction, bridge decks of the steel structure bridge are laid on the cross beam along two sides of the center line of the bridge, and top surfaces of two ends of the cross beam are respectively reserved with a certain length and are not laid firstly; installing a bearing beam, a cross beam and a bridge deck of the construction channel on the shore by adopting a crawler crane; laying a bridge deck between the channel trestle and the construction channel, and communicating the channel trestle with the construction channel;
(2) the crawler crane runs onto a construction channel through a channel trestle, the construction channel is continuously extended and erected from two banks to a midspan, a steel pipe pile is not driven at the midspan position of the construction channel, the construction channel is not closed, and a navigation hole with a certain width is reserved; driving steel pipe pile supports on two sides of the construction channel to serve as mounting supports of the steel structure bridge girder;
(3) the method comprises the following steps that longitudinal beam sections of the ship water-borne steel structure bridge are adopted, two crawler cranes are used on a construction channel, a lifting mode is adopted, longitudinal beams on two sides of the steel structure bridge are installed from two banks to a midspan, and two ends of each transverse beam are respectively welded with the longitudinal beams on the two sides; closing the longitudinal beams at the midspan position of the construction channel, welding a cross beam between the longitudinal beams at two sides of the midspan, paving a bridge deck on the cross beam, and communicating the construction channel;
(4) erecting an arch rib mounting bracket on the construction channel by adopting a crawler crane; the lower ends of the arch rib mounting brackets are supported at two ends of the cross beam where the bridge deck is not laid, and the cross beam at the midspan position is avoided;
(5) hoisting arch ribs from two banks to midspan on a construction channel by adopting a crawler crane; the arch ribs at the midspan position are hoisted on the construction channels at two sides of the navigation channel by the crawler crane, and the crawler crane can only run in no-load when passing through the midspan position of the construction channel;
(6) after the arch ribs are closed, installing arch rib crossbars;
(7) slings are arranged between the arch ribs and the longitudinal beams, and the longitudinal beams are supported by the steel pipe pile supports and are converted into suspension by the arch ribs;
(8) and (4) sequentially removing the arch rib support, the longitudinal beam mounting support, the Bailey beam and the steel pipe pile at the lower part of the construction channel and the channel trestle, and mounting bridge decks on the top surfaces of two ends of the cross beam to complete the river-crossing steel structure arch bridge construction.
According to the construction method, firstly, a crawler crane construction channel is erected along the design position of a bridge, a steel pipe pile is adopted as a lower support for the construction channel, a cross beam of a steel structure bridge is directly used as a distribution beam of the construction channel, a bridge deck is laid on the cross beam, a longitudinal beam of the steel structure bridge is installed on the construction channel by utilizing the crawler crane, then arch rib installation supports are erected at two ends of the cross beam and arch ribs are installed, the construction process is simple, and the construction efficiency is high; the construction equipment mainly adopts the crawler crane, and a large-scale floating crane is not required to be input, so that the construction cost can be greatly reduced; the construction of the invention is not restricted by the water level of the river channel, which is beneficial to ensuring the construction period.
Drawings
FIG. 1 is a construction flow chart of the present invention.
Detailed Description
FIG. 1 is a construction flow chart of the present invention, and the specific construction process is as follows:
(1) respectively erecting a channel trestle in the river at the position, close to the design position of the bridge, of the two banks, and respectively erecting a section of construction channel at the two ends of the design position of the bridge along the bridge direction; the channel trestle and the construction channel both adopt steel pipe piles as lower supports, wherein the construction channel adopts a Bailey beam which is erected on the top of the steel pipe pile along the bridge direction as a bearing beam, a cross beam of the steel structure bridge is erected on the Bailey beam in the transverse bridge direction as a distribution beam of the construction channel, and the erection space of the cross beam is consistent with the design space of the cross beam of the steel structure bridge; and bridge decks of the steel structure bridge are laid on the cross beams along two sides of the center line of the bridge, and certain lengths of top surfaces of two ends of the cross beams are reserved respectively, and the bridge decks are not laid firstly.
The length of the construction channel is within the construction range of the crawler crane on the bank, and the bearing beam, the cross beam and the bridge deck of the construction channel can be installed on the bank by adopting the crawler crane.
And laying a bridge deck between the channel trestle and the construction channel, and communicating the channel trestle with the construction channel.
(2) The crawler crane on the bank runs to the construction channel erected in the step (1) through the channel trestle, the construction channel is continuously erected from two banks to the midspan, the construction channel is not closed at the midspan position, and a steel pipe pile is not erected, so that a navigation hole with a certain width is reserved, and influence on river navigation is avoided.
And (4) driving steel pipe pile supports on two sides of the construction channel by using the crawler crane to serve as mounting supports of the steel structure bridge girder.
(3) The method comprises the following steps that a longitudinal beam section of the ship water-borne steel structure bridge is adopted, two crawler cranes are used on a construction channel in a lifting and hanging mode, longitudinal beams on two sides of the steel structure bridge are installed from two banks to a midspan, and the longitudinal beams are supported on longitudinal beam installation supports firstly; closing the longitudinal beam at the midspan position of the construction channel;
welding two ends of each cross beam with longitudinal beams on two sides respectively;
a cross beam is also welded between the longitudinal beams on the two sides of the midspan, and a bridge deck is laid on the cross beam to communicate the top surface of the construction channel; because no steel pipe pile is erected at the navigation hole, the construction channel can still be navigated under the midspan after the construction channel is communicated with the midspan.
(4) Erecting an arch rib mounting bracket on the construction channel by adopting a crawler crane; the arch rib mounting brackets are supported at two ends of the cross beam where the bridge deck is not laid. Because the cross beam at the midspan position is not supported by the steel pipe piles and has limited bearing capacity, the installation of the arch rib bracket needs to avoid the cross beam at the midspan position.
(5) Hoisting arch rib segments from two banks to midspan on the construction channel by adopting a crawler crane; the arch ribs at the midspan position are hoisted on the construction channels at two sides of the navigation hole by the crawler crane, and the crawler crane can only run in no-load when passing through the midspan position of the construction channel, so that the bearing capacity of the midspan position of the construction channel is avoided being exceeded.
(6) After the arch ribs are closed, installing arch rib crossbars; the arch rib cross brace is also hoisted by adopting a crawler crane.
(7) And slings are arranged between the arch ribs and the longitudinal beams, and the longitudinal beams are supported by the steel pipe pile supports and are converted into suspension by the arch ribs.
(8) And (3) sequentially removing the arch rib mounting supports, the longitudinal beam mounting supports, the Bailey beams and the steel pipe piles at the lower part of the construction channel, removing the channel trestle, and mounting the rest bridge decks, namely the bridge decks on the top surfaces of the two ends of the cross beam to complete the river-crossing steel structure arch bridge construction.
Claims (1)
1. A construction method of a river-crossing steel structure arch bridge is characterized by comprising the following steps:
(1) respectively erecting a channel trestle in the river at the position, close to the design position of the bridge, of the two banks, and respectively erecting a section of construction channel at the two ends of the design position of the bridge along the bridge direction; the channel trestle and the construction channel both adopt steel pipe piles as lower supports, wherein the construction channel adopts a Bailey beam which is erected on the top of the steel pipe pile in the bridge direction as a bearing beam, a cross beam of the steel structure bridge is erected on the Bailey beam in the transverse bridge direction, bridge decks of the steel structure bridge are laid on the cross beam along two sides of the center line of the bridge, and top surfaces of two ends of the cross beam are respectively reserved with a certain length and are not laid firstly; installing a bearing beam, a cross beam and a bridge deck of the construction channel on the shore by adopting a crawler crane; laying a bridge deck between the channel trestle and the construction channel, and communicating the channel trestle with the construction channel;
(2) the crawler crane runs onto a construction channel through a channel trestle, the construction channel is continuously erected from two banks to a midspan, a steel pipe pile is not arranged at the midspan position of the construction channel, the construction channel is not closed, and a navigation hole with a certain width is reserved; driving steel pipe pile supports on two sides of the construction channel to serve as mounting supports of the steel structure bridge girder;
(3) the method comprises the following steps that longitudinal beam sections of the ship water-borne steel structure bridge are adopted, two crawler cranes are used on a construction channel, a lifting mode is adopted, longitudinal beams on two sides of the steel structure bridge are installed from two banks to a midspan, and two ends of each transverse beam are respectively welded with the longitudinal beams on the two sides; closing the longitudinal beams at the midspan position of the construction channel, welding a cross beam between the longitudinal beams at two sides of the midspan, paving a bridge deck on the cross beam, and communicating the construction channel;
(4) erecting an arch rib mounting bracket on the construction channel by adopting a crawler crane; the lower ends of the arch rib mounting brackets are supported at two ends of the cross beam where the bridge deck is not laid, and the cross beam at the midspan position is avoided;
(5) hoisting arch ribs from two banks to midspan on a construction channel by adopting a crawler crane; the arch ribs at the midspan position are hoisted on the construction channels at two sides of the navigation channel by the crawler crane, and the crawler crane can only run in no-load when passing through the midspan position of the construction channel;
(6) after the arch ribs are closed, installing arch rib crossbars;
(7) slings are arranged between the arch ribs and the longitudinal beams, and the longitudinal beams are supported by the steel pipe pile supports and are converted into suspension by the arch ribs;
(8) and (4) sequentially removing the arch rib support, the longitudinal beam mounting support, the Bailey beam and the steel pipe pile at the lower part of the construction channel and the channel trestle, and mounting bridge decks on the top surfaces of two ends of the cross beam to complete the river-crossing steel structure arch bridge construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110969115.1A CN113668398A (en) | 2021-08-23 | 2021-08-23 | Construction method of river-crossing steel structure arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110969115.1A CN113668398A (en) | 2021-08-23 | 2021-08-23 | Construction method of river-crossing steel structure arch bridge |
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| CN113668398A true CN113668398A (en) | 2021-11-19 |
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| CN202110969115.1A Pending CN113668398A (en) | 2021-08-23 | 2021-08-23 | Construction method of river-crossing steel structure arch bridge |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002201609A (en) * | 2000-12-28 | 2002-07-19 | Ps Corp | Construction method for concrete arch bridge |
| JP2007205139A (en) * | 2006-02-06 | 2007-08-16 | Sumitomo Mitsui Construction Co Ltd | Construction method of arch bridge |
| CN102367650A (en) * | 2011-08-05 | 2012-03-07 | 中铁一局集团厦门建设工程有限公司 | Construction method of steel pipe arch bridge |
| CN109056548A (en) * | 2018-09-19 | 2018-12-21 | 中交二公局第六工程有限公司 | A kind of steel arch frame construction method |
| CN110886237A (en) * | 2019-12-25 | 2020-03-17 | 中交路桥华南工程有限公司 | Arch bridge construction method |
| CN111155411A (en) * | 2020-02-20 | 2020-05-15 | 中国水利水电第五工程局有限公司 | Cast-in-place arch bridge combined support structure and construction method thereof |
-
2021
- 2021-08-23 CN CN202110969115.1A patent/CN113668398A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002201609A (en) * | 2000-12-28 | 2002-07-19 | Ps Corp | Construction method for concrete arch bridge |
| JP2007205139A (en) * | 2006-02-06 | 2007-08-16 | Sumitomo Mitsui Construction Co Ltd | Construction method of arch bridge |
| CN102367650A (en) * | 2011-08-05 | 2012-03-07 | 中铁一局集团厦门建设工程有限公司 | Construction method of steel pipe arch bridge |
| CN109056548A (en) * | 2018-09-19 | 2018-12-21 | 中交二公局第六工程有限公司 | A kind of steel arch frame construction method |
| CN110886237A (en) * | 2019-12-25 | 2020-03-17 | 中交路桥华南工程有限公司 | Arch bridge construction method |
| CN111155411A (en) * | 2020-02-20 | 2020-05-15 | 中国水利水电第五工程局有限公司 | Cast-in-place arch bridge combined support structure and construction method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 黄结团: "拱桥支架吊装施工技术探析", 《公路交通科技(应用技术版)》 * |
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Application publication date: 20211119 |
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