CN110847048B - Positioning construction method for corrugated steel web - Google Patents
Positioning construction method for corrugated steel web Download PDFInfo
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- CN110847048B CN110847048B CN201911150464.XA CN201911150464A CN110847048B CN 110847048 B CN110847048 B CN 110847048B CN 201911150464 A CN201911150464 A CN 201911150464A CN 110847048 B CN110847048 B CN 110847048B
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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
A method for positioning and constructing corrugated steel web plates includes installing templates on two sides of a bridge bottom plate of a bridge, installing a scaffold on one side of the templates, adjusting the position of an anti-wave web plate by a plurality of adjusting devices, installing section steel for fixing after adjustment is finished, manufacturing a split heads by measuring the inclination of the bridge bottom plate, enabling the anti-wave web plate to be in a horizontal position, hanging the anti-wave web plate by a crane, adjusting the height of the anti-wave web plate, placing a cushion block with a proper height between the anti-wave web plate and the split heads until the anti-wave web plate reaches a designed elevation, installing a plurality of crossed top brackets between the anti-wave web plates, enabling one end of each top bracket to abut against the anti-wave web plate and the other end to abut against the bridge bottom plate, installing a fine-tuning scaffold pipe between the scaffold and the anti-wave web plate, connecting one end of the fine-tuning scaffold pipe with the anti-wave web plate and the other end of the anti-wave, the positioning method is simple and easy to operate, and the used work is conventional and cheap.
Description
Technical Field
The invention relates to the field of corrugated steel web construction in water transport engineering, in particular to a corrugated steel web positioning construction method.
Background
The corrugated steel web PC bridge is a corrugated steel web prestressed concrete box girder bridge for short, namely a box girder using a corrugated steel plate to replace a concrete web of a prestressed concrete box girder as a web, and is characterized in that a steel plate with the thickness of 10-20 mm is used to replace a concrete web with the thickness of 30-80 cm. The corrugated steel web PC bridge is sourced from France, is accepted and popularized vigorously in Japan in the early 90 th century, and has become a recommended bridge type of a Japanese expressway to date. The corrugated steel web concrete box girder is gradually popularized in China, in the installation process of corrugated steel webs, 0# corrugated steel webs are used as the foundation of the corrugated steel webs of a bridge, the precision control is not important, and the positioning, installing and constructing method of the 0# corrugated steel webs is mainly explained.
Chinese patent CN 106012861A relates to an installation positioning device and a construction method of a corrugated steel web, which comprises a plurality of rows of supporting square stools transversely arranged on a base surface, wherein the upper plate surface of each row of supporting square stools is used for supporting one side end surface of the corrugated steel web, a supporting die carrier is arranged beside one row of supporting square stools positioned at the outer side, the plate surfaces of the corrugated steel webs are vertically arranged, cross braces are arranged between adjacent corrugated steel webs, the length direction of each cross brace is horizontal, two ends of each cross brace are fixedly connected with the plate surface of the corrugated steel web, a plurality of groups of cross braces are arranged along the vertical direction at intervals, cross braces are arranged between the cross braces adjacently arranged, two ends of each cross brace respectively form detachable hooking and matching with the cross braces, the installation positioning device of the corrugated steel webs is a light tool which is convenient to carry and construct, but the method is complicated when a box girder bridge is spliced after the steel webs are fixed, and a formwork needs to be reinstalled, the overall time is not efficiently optimized.
Chinese patent CN 106285021 a realizes supporting and can following a pair of wave form steel web through setting up the slide base on eight angles of square frame wave form steel web removes, be equipped with on the square frame and be used for the adjustment the horizontal positioning device of a pair of wave form steel web horizontal direction position, be equipped with on the square frame and be used for the adjustment the vertical positioning device of a pair of wave form steel web vertical direction position adjusts the horizontal direction position and the vertical position of a pair of wave form steel web of treating the installation respectively through horizontal positioning device and vertical positioning device, and the high accuracy, the high efficiency location of wave form steel web are realized to this kind of mode to it is fixed to realize the interim support of wave form steel web. However, the adjusting method is not comprehensive, the adjustment of the inclination cannot be realized, and the fine adjustment of the inclination is very important when the corrugated steel web is constructed.
Disclosure of Invention
The invention mainly aims to provide a positioning construction method for a corrugated steel web, which solves the problems of precision adjustment and bridge assembly in the later period in the installation process of the corrugated steel web.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a positioning construction method for corrugated steel webs includes the steps of installing templates on two sides of a bridge bottom plate of a bridge, installing a scaffold on one side of each template, installing split heads between the templates, placing the corrugated webs on the split heads, adjusting the positions of the corrugated webs through a plurality of adjusting devices, and installing and fixing section steel after adjustment is finished.
In a preferred scheme, the method for placing the wave web comprises the following steps:
s1, manufacturing a split heads by measuring the inclination of the bridge bottom plate, wherein the split heads enable the antinode plates to be in a horizontal position;
s2, hoisting the corrugated web plate through the crane, adjusting the height of the corrugated web plate, and placing a cushion block with a proper height between the corrugated web plate and the split heads until the corrugated web plate reaches the designed elevation;
s3, mounting a plurality of crossed top brackets between the wave webs, wherein one end of each top bracket is abutted against the wave web, and the other end of each top bracket is abutted against the bridge bottom plate;
s4, installing fine tuning scaffold tubes between the scaffold and the antinode plates, wherein one ends of the fine tuning scaffold tubes are connected with the antinode plates, and the other ends of the fine tuning scaffold tubes are installed on the scaffold;
s5, installing a chain block on the top of the template, wherein a stay wire of the chain block is connected to a flange plate of the wave web plate;
in the preferred scheme, inclined supporting plates are welded on two sides of the split heads.
4. The positioning construction method of the corrugated steel web plate as claimed in claim 1 or 2, wherein the method comprises the following steps: the position adjusting method of the wave web plate comprises the following steps:
a1, utilizing the chain block to adjust the angle, adjusting the fine adjustment scaffold tube while controlling the adjustment of the chain block, and fixing the fine adjustment scaffold tube after the adjustment is finished;
a2, adjusting the top bracket to make the top bracket tightly abut against the wave web plate, and making the fine tuning scaffold tube and the top bracket mutually abut against and fix the wave web plate.
In a preferred scheme, the method for fixing the position of the wave web comprises the following steps:
b1, after the position of the wave-shaped web is adjusted, welding second section steel at the bottom of the wave-shaped web;
b2, welding first section steel at the top of the corrugated web plate, wherein the lengths of two ends of the first section steel exceed that of the corrugated web plate;
b3, after the antinode plate is fixed, connecting the flange plate of the top beam with one side of the antinode plate; pouring cement between the two layers;
and B4, pouring cement between the flange plate of the antinode plate and the bridge bottom plate of the bridge.
In an optimized scheme, the step of pouring cement at the bottoms of the bridge bottom plate and the antinode plate is as follows:
c1, binding steel bars between the antinode plates and the bottom plate of the bridge, and removing the split heads after the steel bars are bound;
c2, fixedly connecting the antinode plates with the bottom flange plate through steel bars between the bottom flange plate and the bridge bottom plate, and then pouring cement;
and C3, binding steel bars at the top of the template, removing the chain block, placing a bridge top plate at the top of the template, and pouring cement between the bridge top plate and the web plate.
In the preferred scheme, after the pouring cement reaches a certain strength, the template and the scaffold are dismantled.
The invention provides a positioning construction method for a corrugated steel web plate, which has the beneficial effects that the requirement on the positioning accuracy of the corrugated steel web plate is realized by utilizing the principle of space positioning of a conventional structure and utilizing materials such as a prefabricated split heads, scaffold tubes, jacking supports, calabashes, profile steels and the like, the corrugated steel web plate bridge is fixed, the popularization value is very high, the positioning method is simple and easy to operate, and the used work is more conventional and cheaper. Especially, the traveling wave web is firstly subjected to mileage positioning, then elevation positioning and finally axis positioning, and the positioning thought of the traveling wave web is more efficient and practical.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is the position of a wave web in a bridge of the present invention;
FIG. 2 is a view of the present invention in the direction of FIG. 1A-A;
FIG. 3 is a schematic diagram of the wave web and connecting cap hypotenuse connection of the present invention;
FIG. 4 is a view of the configuration of the split heads of the present invention;
FIG. 5 is a block diagram of the installation adjustment mechanism of the present invention;
FIG. 6 is a side view of the installation adjustment device of the present invention;
FIG. 7 is a structural view of a welded steel of the present invention;
FIG. 8 is a side view structural view of the welded section steel of the present invention;
FIG. 9 is a structural view of the dismounting adjusting device of the invention:
FIG. 10 is a side view of the present invention with the adjustment device removed;
a bridge 1; connecting a top beam 101; a bridge roof 102; a wave web 2; a flange plate 201; a split heads 3; a gusset 301; a support column 4; a template 5; a scaffold 6; a fine tuning scaffold tube 7; a bridge floor 8; a cushion block 9; a top bracket 10; a chain block 11; a first section steel 12; second type steel 13.
Detailed Description
Example 1
As shown in figures 1-10, a positioning construction method for corrugated steel webs comprises the steps of installing formworks 5 on two sides of a bridge bottom plate 8 of a bridge 1, installing scaffold 6 on one side of each formwork 5, installing split heads 3 between the formworks 5, placing corrugated webs 2 on the split heads 3, adjusting the positions of the corrugated webs 2 through a plurality of adjusting devices, and installing section steel for fixing after the adjustment is finished. By the method, the construction method is simple, and the wave web 2 can be quickly installed and adjusted.
In a preferred scheme, the method for placing the wave web 2 comprises the following steps:
s1, manufacturing a split heads 3 by measuring the inclination of the bridge bottom plate 8, wherein the split heads 3 enable the wave web 2 to be in a horizontal position;
s2, hoisting the corrugated web 2 through a crane, adjusting the height of the corrugated web 2, and placing a cushion block 9 with a proper height between the corrugated web 2 and the split heads 3 until the corrugated web 2 reaches a designed elevation;
s3, a plurality of crossed top brackets 10 are arranged between the wave webs 2, one end of each top bracket 10 abuts against the wave webs 2, and the other end of each top bracket 10 abuts against the bridge bottom plate 8;
s4, installing a fine adjustment scaffold tube 7 between the scaffold 6 and the antinode plate 2, wherein one end of the fine adjustment scaffold tube 7 is connected with the antinode plate 2, and the other end of the fine adjustment scaffold tube 7 is installed on the scaffold 6;
s5, installing a chain block 11 on the top of the template 5, and connecting the pull wires of the chain block 11 to the flange plate 201 of the wave web plate 2;
in a preferable scheme, inclined supporting plates 301 are welded on two sides of the split heads 3. According to the method, the positions of the corrugated steel webs on one side of the wave web 2 are temporarily fixed, after the two corrugated steel webs of the corresponding beam section are installed, the two corrugated steel webs on one side are further connected together, so that the fixing mode is optimized, and the smooth construction of the steel bars and the template is ensured.
4. The positioning construction method of the corrugated steel web plate as claimed in claim 1 or 2, wherein the method comprises the following steps: the position adjusting method of the wave web plate 2 comprises the following steps:
a1, utilizing the chain block 11 to adjust the angle, adjusting the fine adjustment scaffold tube 7 while controlling the adjustment of the chain block 11, and fixing the fine adjustment scaffold tube 7 after the adjustment is finished;
a2, adjusting the top bracket 10 to make the top bracket 10 tightly abut against the wave web 2, and mutually abutting the fine tuning scaffold tube 7 and the top bracket 10 to fix the wave web 2. According to the method, the corrugated steel web plate is accurately positioned in modes of fine adjustment of the chain block 11, the fine adjustment of the scaffold tube 7, the top bracket 10 and the like through the cushion block 9 between the split heads 3 and the bottom plate of the corrugated web plate 2.
In a preferred embodiment, the method for fixing the position of the wave web 2 comprises:
b1, welding a second section steel 13 at the bottom of the wave web plate 2 after adjusting the position of the wave web plate 2;
b2, welding a first section steel 12 on the top of the corrugated web 2, wherein the length of two ends of the first section steel 12 exceeds that of the corrugated web 2;
b3, after the antinode plate 2 is fixed, connecting the flange plate 201 of the top beam 101 on one side of the antinode plate 2; pouring cement between the two layers;
b4, pouring cement between the flange plate 201 of the antinode plate 2 and the bridge bottom plate 8 of the bridge 1. In the method, the first step is to perform the following steps,
in the preferred scheme, the step of pouring cement at the bottom of the bridge bottom plate 8 and the antinode plate 2 of the bridge 1 is as follows:
c1, binding steel bars between the antinode plates 2 and the bridge bottom plate 8, and removing the split heads 3 after the steel bars are bound;
c2, fixedly connecting the antinode plates 2 with the bottom flange plate 201 through steel bars between the bridge bottom plates 8, and then pouring cement;
c3, binding steel bars on the top of the formwork 5, removing the chain block 11, placing the bridge top plate 102 on the top of the formwork 5, and pouring cement between the bridge top plate 102 and the web plate 2. By the method, the template does not need to be built again when the cement is poured, and the quick fixing and splicing are realized.
In the preferred scheme, after the pouring cement reaches a certain strength, the formwork 5 and the scaffold 6 are dismantled.
Example 2
Further explained with reference to embodiment 1, as shown in fig. 1 to 10, the prefabricated split heads 3 are processed, a plurality of fine adjustment scaffold tubes 7 for fixing are installed, the fine adjustment scaffold tubes 7 are hoisted in place, position adjustment is performed, mileage direction adjustment is performed first during adjustment, height direction adjustment is performed, and finally axis position adjustment is performed, wherein the adjustment is mainly realized through the fine adjustment scaffold tubes 7 with a jacking and the chain block 11.
After the adjustment is in place, in order to ensure that the construction of the steel bars and the templates has operability, the first section steel 12 and the second section steel 13 which are connected in a welding mode are welded between the corrugated plates 2 to complete positioning and fixing.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (5)
1. A positioning construction method for a corrugated steel web is characterized by comprising the following steps: the method comprises the following steps that templates (5) are installed on two sides of a bridge bottom plate (8) of a bridge (1), a scaffold (6) is installed on one side of each template (5), split heads (3) are installed between the templates (5), corrugated plates (2) are placed on the split heads (3), the corrugated plates (2) are subjected to position adjustment through a plurality of adjusting devices, and section steel for fixing is installed after the adjustment is finished;
the method for placing the wave web (2) comprises the following steps:
s1, manufacturing a split heads (3) by measuring the inclination of the bridge bottom plate (8), wherein the split heads (3) enable the wave web plate (2) to be in a horizontal position;
s2, hoisting the corrugated web (2) by a crane, adjusting the height of the corrugated web (2), and placing a cushion block (9) with a proper height between the corrugated web (2) and the split heads (3) until the corrugated web (2) reaches a designed elevation;
s3, a plurality of crossed top brackets (10) are arranged between the wave webs (2), one end of each top bracket (10) abuts against the wave webs (2), and the other end of each top bracket (10) abuts against the bridge bottom plate (8);
s4, installing a fine adjustment scaffold tube (7) between the scaffold (6) and the wave web plate (2), wherein one end of the fine adjustment scaffold tube (7) is connected with the wave web plate (2), and the other end of the fine adjustment scaffold tube is installed on the scaffold (6);
s5, installing a chain block (11) on the top of the template (5), wherein a stay wire of the chain block (11) is connected to a flange plate (201) of the wave web plate (2);
the position adjusting method of the wave web (2) comprises the following steps:
a1, angle adjustment is carried out by using a chain block (11), the fine adjustment scaffold tube (7) is adjusted while the chain block (11) is controlled to be adjusted, and after the adjustment is finished, the fine adjustment scaffold tube (7) is fixed;
a2, adjusting the top bracket (10) to make the top bracket (10) tightly abut against the wave web plate (2), and mutually abutting the fine tuning scaffold tube (7) and the top bracket (10) to fix the wave web plate (2).
2. The positioning construction method of the corrugated steel web as claimed in claim 1, wherein the method comprises the following steps: inclined supporting plates (301) are welded to the two sides of the split heads (3).
3. The positioning construction method of the corrugated steel web as claimed in claim 1, wherein the method comprises the following steps: the method for fixing the position of the wave web (2) comprises the following steps:
b1, after the position of the wave web plate (2) is adjusted, welding a second section steel (13) at the bottom of the wave web plate (2);
b2, welding a first section steel (12) on the top of the wave web plate (2), wherein the lengths of two ends of the first section steel (12) exceed the wave web plate (2);
b3, after the antinode plate (2) is fixed, connecting the flange plate (201) of the top beam (101) with one side of the antinode plate (2); pouring cement between the two layers;
and B4, pouring cement between the flange plate (201) of the antinode plate (2) and the bridge bottom plate (8) of the bridge (1).
4. The positioning construction method of the corrugated steel web plate as claimed in claim 3, wherein the method comprises the following steps: the steps of pouring cement at the bottom of the bridge bottom plate (8) and the wave web plate (2) of the bridge (1) are as follows:
c1, binding steel bars between the antinode plates (2) and the bridge bottom plate (8), and removing the split heads (3) after the steel bars are bound;
c2, fixedly connecting the antinode plates (2) with the bridge bottom plate (8) through steel bars between the flange plates (201) at the bottom, and then pouring cement;
c3, binding steel bars at the top of the template (5), removing the chain blocks (11), placing a bridge roof (102) at the top of the template (5), and pouring cement between the bridge roof (102) and the web (2).
5. The positioning construction method of the corrugated steel web plate as claimed in claim 4, wherein the method comprises the following steps: and (5) removing the template (5) and the scaffold (6) after the cement is poured to a certain strength.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111576239B (en) * | 2020-06-04 | 2021-07-02 | 李睿 | Auxiliary positioning device of steel web for road and bridge construction |
| CN114481863B (en) * | 2022-03-04 | 2023-09-15 | 合肥工业大学 | Wave form steel web bridge cantilever construction auxiliary assembly |
| CN115418960A (en) * | 2022-09-19 | 2022-12-02 | 中交路桥建设有限公司 | Longitudinal and transverse fine adjustment positioning method for corrugated steel web of box girder |
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| JP4413763B2 (en) * | 2004-12-08 | 2010-02-10 | オリエンタル白石株式会社 | Bridge web unit and main girder manufacturing method using the web unit |
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