CN113136801A - Mounting method of T-shaped beam - Google Patents
Mounting method of T-shaped beam Download PDFInfo
- Publication number
- CN113136801A CN113136801A CN202110289956.8A CN202110289956A CN113136801A CN 113136801 A CN113136801 A CN 113136801A CN 202110289956 A CN202110289956 A CN 202110289956A CN 113136801 A CN113136801 A CN 113136801A
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- China
- Prior art keywords
- hoisting
- pedestal
- prefabricating
- piers
- concrete
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- 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
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Abstract
The invention provides a T-beam mounting method, which comprises the following steps: firstly, paving brick slag on the ground on one side between piers needing to erect a T beam, leveling and compacting the brick slag, pouring a concrete cushion layer on the surface of the brick slag after compaction, and prefabricating a pedestal on the concrete cushion layer after the concrete cushion layer is cured; step two, prefabricating and producing a T beam on the prefabricated pedestal obtained in the step one, and after prefabrication and production of the T beam are finished, hoisting the T beam at the corresponding position to a mounting position on a pier; and step three, after the T-shaped beam is hoisted, positioning of a steel reinforcement framework, assembling of a template, binding of top plate steel reinforcements, casting of concrete, forming and maintenance are carried out according to the traditional prestressed T-shaped beam construction process. The installation method can effectively reduce the danger of construction and installation and improve the efficiency.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a T-beam mounting method.
Background
The existing large-span T-beam installation method is most commonly erected by a translation method, because the dead weight of a T-beam is large, a steel pile or a bored pile needs to be arranged on a foundation below a steel platform, the steel platform needs to be erected every span, a translation track needs to be installed every span, a large amount of labor, materials and equipment are needed for auxiliary installation and construction, the installation cost is high, because the T-beam is prefabricated on the steel platform and is limited by the bearing load of the steel platform, only 1-2 frames can be prefabricated every time, the construction period is long, the working surface on the platform is narrow, the construction is over centralized and all high-altitude operation is carried out, and large safety risks exist in the T-beam prefabricating and translation processes.
In order to overcome the above problems, a T-beam installation method with higher efficiency and reduced overhead work is needed.
Disclosure of Invention
In view of the above, the invention provides a T-beam installation method which is safer, can effectively reduce the difficulty of high-altitude operation, and can improve the installation efficiency.
The technical scheme of the invention is realized in such a way that the invention provides a T-beam mounting method, which comprises the following steps:
firstly, paving brick slag on the ground on one side between piers needing to erect a T beam, leveling and compacting the brick slag, pouring a concrete cushion layer on the surface of the brick slag after compaction, and prefabricating a pedestal on the concrete cushion layer after the concrete cushion layer is cured;
step two, prefabricating and producing a T beam on the prefabricated pedestal obtained in the step one, and after prefabrication and production of the T beam are finished, hoisting the T beam at the corresponding position to a mounting position on a pier;
and step three, after the T-shaped beam is hoisted, positioning of a steel reinforcement framework, assembling of a template, binding of top plate steel reinforcements, casting of concrete, forming and maintenance are carried out according to the traditional prestressed T-shaped beam construction process.
On the basis of the technical scheme, preferably, in the step one, the thickness of the laid brick slag is 50-100cm, and the thickness of the concrete cushion is 8-12 cm.
On the basis of the above technical solution, preferably, in the step one, a specific method of prefabricating the pedestal includes:
and pouring strip-shaped reinforced concrete on the concrete cushion layer, laying channel steel on two sides of the upper surface of the reinforced concrete as corners of the T-beam bottom die, and obtaining the pedestal after the reinforced concrete is cured.
On the basis of the above technical solution, preferably, the length direction of the strip-shaped reinforced concrete is parallel to the arrangement direction of the piers.
Further preferably, the main reinforcement of the steel bar net rack in the reinforced concrete is phi 12 deformed steel, the steel bar main rack comprises an upper layer and a lower layer, the distance between the two layers is 100mm, the stirrups are phi 8 coiled circles, and the distance between two adjacent stirrups is 200 mm.
On the basis of the above technical solution, preferably, the upper surfaces of the two end portions of the obtained pedestal in the length direction are provided with hoisting ducts.
On the basis of the above technical solution, preferably, in the second step, the T-beam includes two side beams and a plurality of center beams, and the specific method for hoisting the T-beam at the corresponding position to between two adjacent piers includes: firstly, hoisting a center sill to a position close to the center sill mounting position adjacent to the side sill mounting position on one side, then hoisting a side sill to the side face of the mounted center sill, then sequentially extending and hoisting the center sill outwards from the side face vacant position of the mounted center sill until all the center sills are hoisted, and finally hoisting the rest of the side sill.
On the basis of the technical scheme, preferably, when the T beam is hoisted and installed, jacks are arranged below two sides of the transverse partition plates at two ends of the T beam.
On the basis of the above technical solution, preferably, in the second step, the method for hoisting the T-beam at the corresponding position to the installation position on the pier includes: the method comprises the steps of starting from the position of a first prefabricating pedestal needing to install a T beam, hoisting the T beam on the first prefabricating pedestal to a position between two piers corresponding to a second prefabricating pedestal on one adjacent side, hoisting the T beam on a third prefabricating pedestal to a position between two piers corresponding to a fourth prefabricating pedestal on one adjacent side, analogizing, hoisting the T beam on the second prefabricating pedestal to a position between two piers corresponding to a third prefabricating pedestal on one adjacent side, hoisting the T beam on a fourth prefabricating pedestal to a position between two piers corresponding to a fifth prefabricating pedestal on one adjacent side, analogizing in sequence, hoisting the T beam on the second prefabricating pedestal to a position between two piers corresponding to the first prefabricating pedestal on one adjacent side, and completing hoisting of all T beams.
Compared with the prior art, the mounting method of the T-shaped beam has the following beneficial effects:
(1) the mounting method of the T beam overcomes the defect of more high-altitude operations in the prior art, adopts the modes of ground prefabrication and hoisting, has larger operable space in the prefabrication process of the T beam, can realize the synchronous manufacture and mounting of the T beam among a plurality of piers, and shortens the mounting period;
(2) in the T-beam installation method, in order to realize that the T-beams can be kept stable in the parallel installation process and prevent side turning, the mode of firstly hoisting the middle beam and then hoisting the edge beam is adopted, so that the safety and stability of T-beam installation are improved, and a jack is also adopted for assisting in hoisting, so that the balance performance of the T-beams in hoisting is improved;
(3) furthermore, the special T-shaped beam prefabricating and hoisting path is adopted, so that the installation period is shortened, and the mutual interference influence between the hoisting process and the manufacturing process can be avoided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention discloses a T-beam mounting method, which comprises the following steps:
firstly, paving brick slag on the ground on one side between piers needing to erect a T beam, leveling and compacting the brick slag, pouring a concrete cushion layer on the surface of the brick slag after compaction, and prefabricating a pedestal on the concrete cushion layer after the concrete cushion layer is cured;
step two, prefabricating and producing a T beam on the prefabricated pedestal obtained in the step one, and after prefabrication and production of the T beam are finished, hoisting the T beam at the corresponding position to a mounting position on a pier;
and step three, after the T-shaped beam is hoisted, positioning of a steel reinforcement framework, binding of top plate steel reinforcements, assembling of a template, casting of concrete, forming and maintaining are carried out according to the traditional prestressed T-shaped beam construction process.
In the above embodiment, the prefabricated position of T roof beam sets up the below side at the pier, consequently can guarantee that the hoist and mount process goes on below ground, can avoid high altitude operation, reduces the degree of difficulty and danger of operation, simultaneously, prefabricate on ground and hoist and mount and compare in prefabricating and hoist and mount on the bridge surface, can reserve more spaces and operate, can also hoist simultaneously by the multistage T roof beam, improve hoist and mount efficiency.
In a specific embodiment, in the step one, the thickness of the laid brick slag is 50-100cm, and the thickness of the concrete cushion is 8-12 cm.
Among the above embodiment, because the weight of T roof beam is great, the hoist and mount in-process, crawler crane below ground need bear great pressure, consequently in order to guarantee the steady of hoist and mount process and go on, need strengthen the processing to the ground that hoist and mount process crawler crane passed through, lay the brick sediment at first, improve ground strength, the brick sediment is with low costs, and the material is easily obtained, pours the concrete cushion again, links together the brick sediment, guarantees simultaneously that the level and smooth of ground improves ground bulk strength.
In a specific embodiment, in the step one, the specific method for prefabricating the pedestal comprises the following steps:
and pouring strip-shaped reinforced concrete on the concrete cushion layer, laying channel steel on two sides of the upper surface of the reinforced concrete as corners of the T-beam bottom die, and obtaining the pedestal after the reinforced concrete is cured.
In the above embodiment, because the T roof beam adopts the mode of cast in situ to advance the production preparation, consequently in order to guarantee that the T roof beam is easier to the shaping and the transport hoist and mount in later stage, need set up the installation pedestal on ground, the pedestal adopts reinforced concrete structure to pour the shaping, carries out the building and pouring of T roof beam mould above the pedestal, carries out the installation of next T roof beam after final shaping drawing of patterns and hoist.
In a specific embodiment, the longitudinal direction of the bar-shaped reinforced concrete and the arrangement direction of the piers are parallel to each other.
Among the above embodiment, when reinforced concrete's length direction was parallel with the array orientation of pier, the operation need not turn to at the in-process of later stage hoist and mount transport of prepared T roof beam, only need carry on the translation can, reduce the operation degree of difficulty, and can let pedestal area littleer along the array orientation parallel arrangement of pier.
In a specific embodiment, the main reinforcement of the steel bar net rack in the reinforced concrete is phi 12 deformed steel bars, the main reinforcement of the steel bar net rack comprises an upper layer and a lower layer, the distance between the two layers is 100mm, the stirrups are phi 8 coiled circles, and the distance between two adjacent stirrups is 200 mm.
In the above embodiment, the assumption that the main reinforcement of the steel bar net rack is carried out along the length direction of the pedestal ensures that the mechanical strength of the pedestal along the length direction reaches the standard, and the stirrups are used for improving the bearing capacity of the pedestal along the width direction.
In a specific embodiment, hoisting ducts are formed in the upper surfaces of both ends in the longitudinal direction of the obtained pedestal.
In the above embodiment, because the pedestal is as an overall structure, need bind with the rope before hoisting the T roof beam from the pedestal in the later stage, compare conventional translation operation, this mode degree of difficulty is great, needs to pass the steel wire rope from the below of T roof beam, adopts the mode of seting up the hoist and mount pore on the pedestal, can reduce the degree of difficulty that the steel wire rope was worn in the later stage, the hoist and mount of being convenient for.
In a specific implementation manner, in the second step, the T-beam includes two side beams and a plurality of center beams, and the specific method for hoisting the T-beam at the corresponding position to between two adjacent piers includes: firstly, hoisting a center sill to a position close to the center sill mounting position adjacent to the side sill mounting position on one side, then hoisting a side sill to the side face of the mounted center sill, then sequentially extending and hoisting the center sill outwards from the side face vacant position of the mounted center sill until all the center sills are hoisted, and finally hoisting the rest of the side sill.
Among the above embodiment, because there is the difference in boundary beam and centre sill structure, the boundary beam is asymmetric about, if finish the boundary beam hoist and mount, its equilibrium performance is relatively poor, need supplementary fixed, the operation degree of difficulty is big, and danger is high, centre sill structure is more symmetrical, the installation is stable, therefore this application adopts the centre sill of installing boundary beam one side earlier, install the back and go and fix boundary beam and centre sill with the boundary beam hoist and mount that corresponds, thereby effectively reduced the risk of hoist and mount earlier stage, boundary beam and centre sill are after fixed connection, its holistic center is closer to the intermediate position more, stable in structure, be difficult for toppling, hoist remaining weight afterwards again, hoist last boundary beam again at last, realize low-risk quick hoist and mount.
In a specific embodiment, when the T-shaped beam is hoisted and installed, jacks are arranged below two sides of the diaphragm plates at two ends of the T-shaped beam.
Among the above embodiment, the middle part of T roof beam is narrower, and the upper end surface broad, the contact surface of bottom is less relatively during hoist and mount, is unfavorable for steadily laying, and in order to improve the stationarity of installation, T roof beam both ends are provided with the cross slab, and cross slab both ends below sets up the jack, support when utilizing the jack to hoist to improve the stability of T roof beam hoist and mount, effectively reduced the possibility of the emergence of turning on one's side.
In a specific embodiment, in the second step, the method for hoisting the T-beam at the corresponding position to the installation position on the pier comprises: the method comprises the steps of starting from the position of a first prefabricating pedestal needing to install a T beam, hoisting the T beam on the first prefabricating pedestal to a position between two piers corresponding to a second prefabricating pedestal on one adjacent side, hoisting the T beam on a third prefabricating pedestal to a position between two piers corresponding to a fourth prefabricating pedestal on one adjacent side, analogizing, hoisting the T beam on the second prefabricating pedestal to a position between two piers corresponding to a third prefabricating pedestal on one adjacent side, hoisting the T beam on a fourth prefabricating pedestal to a position between two piers corresponding to a fifth prefabricating pedestal on one adjacent side, analogizing in sequence, hoisting the T beam on the second prefabricating pedestal to a position between two piers corresponding to the first prefabricating pedestal on one adjacent side, and completing hoisting of all T beams.
In the above embodiment, because the T-beam is prefabricated below the bridge piers, and the T-beam needs to be hoisted by the crawler crane, if the crawler crane hoists the corresponding T-beam to a position between the bridge piers on the corresponding side, the travelling of the crawler crane will be affected by the pedestal and the prefabricated T-beam.
Specific embodiments include, for example, No. 1 bridge pier, No. 2 bridge pier, No. 3 bridge pier, No. 4 bridge pier, No. 5 bridge pier, No. 6 bridge pier and No. 7 bridge pier, where T-beam prefabrication is first performed on the ground below the No. 1-No. 2 bridge pier, No. 3-No. 4 bridge pier and No. 5-No. 6 bridge pier, and then the corresponding T-beams are respectively hoisted between the No. 2-No. 3 bridge pier, between the No. 4-No. 5 bridge pier and between the No. 6-No. 7 bridge pier;
then prefabricating T beams on the ground below the No. 2-No. 3 bridge piers, the No. 4-No. 5 bridge piers and the No. 6-No. 7 bridge piers, and hoisting the corresponding T beams to the positions between the No. 3-No. 4 bridge piers and the No. 5-No. 6 bridge piers respectively;
and finally, hoisting the T beam prefabricated on the ground below the No. 2-No. 3 bridge piers to the position between the No. 1-No. 2 bridge piers.
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 invention, 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 (9)
1. A T-beam mounting method is characterized by comprising the following steps:
firstly, paving brick slag on the ground on one side between piers needing to erect a T beam, leveling and compacting the brick slag, pouring a concrete cushion layer on the surface of the brick slag after compaction, and prefabricating a pedestal on the concrete cushion layer after the concrete cushion layer is cured;
step two, prefabricating and producing a T beam on the prefabricated pedestal obtained in the step one, and after prefabrication and production of the T beam are finished, hoisting the T beam at the corresponding position to a mounting position on a pier;
and step three, after the T-shaped beam is hoisted, positioning of a steel reinforcement framework, assembling of a template, binding of top plate steel reinforcements, casting of concrete, forming and maintenance are carried out according to the traditional prestressed T-shaped beam construction process.
2. The method for installing the T-beam as claimed in claim 1, wherein in the first step, the thickness of the laid brick slag is 50-100cm, and the thickness of the concrete cushion is 8-12 cm.
3. The method for installing a T-beam as claimed in claim 1, wherein in the first step, the concrete method for prefabricating the platform comprises the following steps:
and pouring strip-shaped reinforced concrete on the concrete cushion layer, laying channel steel on two sides of the upper surface of the reinforced concrete as corners of the T-beam bottom die, and obtaining the pedestal after the reinforced concrete is cured.
4. A method of installing a T-beam as claimed in claim 3, wherein a length direction of the bar-shaped reinforced concrete and an arrangement direction of the piers are parallel to each other.
5. The method for installing the T-shaped beam as claimed in claim 3, wherein the main reinforcement of the steel bar net rack in the reinforced concrete is phi 12 deformed steel bars, the main reinforcement of the steel bars is composed of an upper layer and a lower layer, the distance between the two layers is 100mm, the distance between the stirrups is phi 8 coils, and the distance between two adjacent stirrups is 200 mm.
6. A method of installing a T-beam as claimed in claim 3, wherein the upper surfaces of both ends in the length direction of the obtained pedestal are provided with a hoisting tunnel.
7. The method for installing the T-shaped beam as claimed in claim 1, wherein in the second step, the T-shaped beam comprises two side beams and a plurality of middle beams, and the specific method for hoisting the T-shaped beam at the corresponding position between two adjacent piers comprises the following steps: firstly, hoisting a center sill to a position close to the center sill mounting position adjacent to the side sill mounting position on one side, then hoisting a side sill to the side face of the mounted center sill, then sequentially extending and hoisting the center sill outwards from the side face vacant position of the mounted center sill until all the center sills are hoisted, and finally hoisting the rest of the side sill.
8. A method of installing a T-beam as claimed in claim 7, wherein jacks are provided below the two sides of the diaphragm at the two ends of the T-beam when the T-beam is hoisted.
9. The method for installing the T-shaped beam as claimed in claim 1, wherein in the second step, the method for hoisting the T-shaped beam at the corresponding position to the installation position on the pier comprises the following steps: the method comprises the steps of starting from the position of a first prefabricating pedestal needing to install a T beam, hoisting the T beam on the first prefabricating pedestal to a position between two piers corresponding to a second prefabricating pedestal on one adjacent side, hoisting the T beam on a third prefabricating pedestal to a position between two piers corresponding to a fourth prefabricating pedestal on one adjacent side, analogizing, hoisting the T beam on the second prefabricating pedestal to a position between two piers corresponding to a third prefabricating pedestal on one adjacent side, hoisting the T beam on a fourth prefabricating pedestal to a position between two piers corresponding to a fifth prefabricating pedestal on one adjacent side, analogizing in sequence, hoisting the T beam on the second prefabricating pedestal to a position between two piers corresponding to the first prefabricating pedestal on one adjacent side, and completing hoisting of all T beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289956.8A CN113136801B (en) | 2021-03-18 | 2021-03-18 | Mounting method of T-shaped beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289956.8A CN113136801B (en) | 2021-03-18 | 2021-03-18 | Mounting method of T-shaped beam |
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| CN113136801A true CN113136801A (en) | 2021-07-20 |
| CN113136801B CN113136801B (en) | 2023-01-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10204830A (en) * | 1997-01-27 | 1998-08-04 | Oriental Constr Co Ltd | Method for bridging bridge girder |
| CN102943440A (en) * | 2012-11-06 | 2013-02-27 | 天津二十冶建设有限公司 | Method for constructing bridges |
| CN105803943A (en) * | 2016-03-11 | 2016-07-27 | 重庆建工市政交通工程有限责任公司 | Large longitudinal slope T-shaped beam prefabricating construction method |
| CN106958186A (en) * | 2017-05-31 | 2017-07-18 | 浙江省交通规划设计研究院 | The construction method of bridge floor body, bridge and bridge |
-
2021
- 2021-03-18 CN CN202110289956.8A patent/CN113136801B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10204830A (en) * | 1997-01-27 | 1998-08-04 | Oriental Constr Co Ltd | Method for bridging bridge girder |
| CN102943440A (en) * | 2012-11-06 | 2013-02-27 | 天津二十冶建设有限公司 | Method for constructing bridges |
| CN105803943A (en) * | 2016-03-11 | 2016-07-27 | 重庆建工市政交通工程有限责任公司 | Large longitudinal slope T-shaped beam prefabricating construction method |
| CN106958186A (en) * | 2017-05-31 | 2017-07-18 | 浙江省交通规划设计研究院 | The construction method of bridge floor body, bridge and bridge |
Non-Patent Citations (2)
| Title |
|---|
| 罗建军等: "汽车起重机吊装预制梁技术及效益分析", 《湖南交通科技》 * |
| 赵进等: "岳阳港城陵矶港区抬吊法引桥T梁安装施工分析", 《中国水运》 * |
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