CN109763569B - Construction method of cantilever awning - Google Patents
Construction method of cantilever awning Download PDFInfo
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- CN109763569B CN109763569B CN201910043448.4A CN201910043448A CN109763569B CN 109763569 B CN109763569 B CN 109763569B CN 201910043448 A CN201910043448 A CN 201910043448A CN 109763569 B CN109763569 B CN 109763569B
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000009434 installation Methods 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 238000012937 correction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention provides a construction method of an overhanging awning, which comprises the following steps: s1, pre-burying construction of anchor bolts; s2, hoisting the stiff steel column; s3, dividing the hoisting of the roof main truss into twenty-four installation units; s4, carrying out supporting installation of the first section of main truss; s5, when a section of main truss GHJ1 is constructed and installed, firstly constructing and hoisting a section; s6, hoisting the inclined upright posts, hoisting the other end of the inclined upright posts by using a crane, and hoisting a second section or next truss at the front end of the inclined upright posts by hoisting; s7, forming a first installation unit by supporting installation and main truss installation according to the steps S4-S6; s8, mounting tie rods and secondary trusses between the two main trusses, and butting the secondary trusses between the adjacent main trusses at high altitude; s9, repeating the steps S4-S7 to finish the rest twenty-three installation units; the invention solves the problems of large span, long member and high construction difficulty of the truss in the traditional cantilever awning construction process by installing the truss in sections in the area, and simultaneously increases temporary support and improves the lateral stability of a single truss.
Description
Technical Field
The invention relates to the technical field of cantilever awning construction, in particular to a cantilever awning construction method.
Background
In recent years, with the continuous development of domestic sports, the number of domestic stadiums is greatly increased, the main body of a structural system of a traditional stadium is a concrete frame structure, and a roof is an overhanging space truss grid structure, but in the process of installing the roof, because a main truss component is long, the section of a part of trusses is overlarge, the transportation is difficult, the whole construction difficulty is large, the construction period is long, the span of a stadium area is large, the quality is heavy, the operation condition is limited, the overhanging span of a single truss is large, the lateral stability of the single truss is poor in the process of installing the structure, the situation of deviation is easy to occur in the construction process, and the progress of the subsequent process is influenced.
Disclosure of Invention
The invention provides a construction method of an overhanging awning, which aims to solve the technical problems that a traditional roof truss member is long, heavy in weight, large in construction difficulty, large in single truss overhanging span and poor in single lateral stability in the structural installation process.
In order to solve the above problems, the technical solution of the present invention is realized as follows:
a construction method of a cantilever awning comprises the following steps:
s1, firstly, measuring the embedded points of the anchor bolts, processing and manufacturing all the embedded bolts in a factory, then embedding the anchor bolts according to the measuring points after finishing binding the floor reinforcing steel bars, welding and fixing the anchor bolts by using the reinforcing steel bars, binding and fixing the vertical reinforcing steel bars of the concrete columns, then removing the temporary fixed template, and finally pouring concrete to finish embedding the anchor bolts;
s2, hoisting the steel column;
s3, dividing the hoisting of the roof main truss into twenty-four installation units, wherein each unit comprises two main trusses, and tie rods and secondary trusses are filled between the two main trusses;
s4, according to field assembly conditions, forming an assembly unit by two main trusses, respectively naming each truss as GHJ1, GHJ2 … … GHJ47, GHJ1 to GHJ9, and GHJ25 to GHJ33 to be hoisted in three sections, wherein GHJ10 to GHJ24 and GHJ25 to GHJ47 are not segmented, and hoisting sequence is carried out from unit one to unit twenty-four in sequence;
s4, carrying out supporting installation of the first section of main truss;
s5, when a section of main truss GHJ1 is constructed and installed, firstly constructing and hoisting a section, wherein two nodes of upper chords at the front end and the rear end of the section of main truss are hung on lintels of two temporary supports, a front end support point and a support are in place, five-point supports form a stable body, and a second-step steel column is constructed;
s6, hoisting the inclined upright post, installing the support part, hoisting the other end by using a crane, rotating to a designed elevation to be in penetrating welding with the first section of main truss, tensioning the front end and the rear end of the member to two sides by using steel wire ropes respectively, and hoisting the front end of the member to hoist the second section or the next truss;
s7, forming a first mounting unit by supporting and mounting the second main truss GHJ2 and mounting the second main truss GHJ2 in accordance with steps S4-S6;
s8, mounting tie rods and secondary trusses between the two main trusses, and butting the secondary trusses between the adjacent main trusses at high altitude;
and S9, looping the steps S4-S7 to loop the rest twenty-three installation units.
Further, the temporary guard plate is welded while the bracket is mounted in the step S5.
Further, the sub-trusses in the step S8 are installed in a bay in sequence from side to side along the transverse axis.
The invention has the beneficial effects that: according to the invention, the roof main truss is hoisted into twenty-four installation units which are respectively hoisted, so that the problems of large span, heavy mass and high construction difficulty of the traditional roof main truss are greatly improved, and after the installation unit trusses are spliced on the ground, the installation unit trusses are hoisted, so that the trouble of long-distance transportation of the traditional truss is avoided, meanwhile, temporary protection is added, and the problems of large cantilever span and poor lateral stability in the installation process of the traditional single truss are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the roof of the present invention.
Fig. 2 is a top view of the primary truss.
Fig. 3 is a cross-sectional view of a main girder.
Fig. 4 is a schematic view of the structure of the support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
A construction method of a cantilever awning comprises the following steps:
s1, firstly, measuring each anchor bolt embedded point, encrypting the axis and the elevation control point on site according to the original axis control point and the elevation control point, and then measuring the axis released according to the control line and then releasing the central cross line and at least two elevation control points of each embedded part;
all the embedded bolts are processed and manufactured in a factory, and all the frames of the embedded bolts of each steel column are processed and manufactured in the factory. Manufacturing precision of the embedded bolt: the pitch of the embedded bolt from middle to middle is not more than 2 mm, and the relative height difference of the top end of the embedded bolt is not more than 2 mm; and then after the floor reinforcing steel bars are bound, after the floor reinforcing steel bars are bound and before the floor beam reinforcing steel bars are bound, the embedded parts can be inserted through embedding work. According to the axis measured by a measurer, integrally positioning the embedded bolt, firstly, finding the longitudinal and transverse center lines of four fixed angle steels on the embedded part, and enabling the center lines to be matched with a measuring and positioning reference line; then, measuring the marks of the top surfaces of the bolts on four corners of the embedded part by using a level gauge, leveling the four corners of four fixed angle steels below the embedded part by using steel bars or angle steels when the height is insufficient, embedding a foundation anchor bolt according to a measuring point, welding and fixing the anchor bolt by using the steel bars, binding and fixing vertical ribs of a concrete column, removing a temporary fixed template, and finally pouring concrete to finish the embedding of the foundation anchor bolt;
s2, trial hoisting is carried out before the steel column is hoisted, the crane is parked at a position close to an operation bearing platform in a crane operation area, a hoisting steel wire rope is locked with a steel column lifting lug, after the safety inspection is qualified, the crane is parked when the height of one hoisting end of the hoisting column top is 100-200 mm, the firmness of the rigging and the stability of the crane are inspected, meanwhile, a specially-assigned person is dispatched to continuously observe the safety and stability condition of the foundation below the truck crane, the slow hoisting can be continuously carried out after the safety is determined, a crane commander needs to pay close attention to the hoisting state of the component in the air operation stage, and command coordination.
The purpose of the test hoisting is three: firstly, the safety and reliability of hoisting equipment are checked; secondly, checking the accuracy of the setting of the hoisting point; and thirdly, coordinating the general exercises from command to lifting, wind catching, lifting speed observation and crane operation. And then hoisting the steel columns, wherein the hoisting of the steel columns is carried out according to the installation sequence of each partition, a stable structural system is formed in time, the butt joint stagger adjustment of the upper steel column and the lower steel column can be carried out by welding an L-shaped steel plate bracket and a jack on the top of the lower end column, the temporary bolts are loosened properly during correction, then the temporary bolts are corrected by the jack, and the temporary bolts are screwed down after the correction. If the gap between the steel column lug plate and the temporary connecting clamping plate is too large, a cushion steel plate can be additionally arranged between the steel column lug plate and the temporary connecting clamping plate, and then the bolt is screwed down. And finally, cutting off an L-shaped steel plate support for auxiliary correction before steel column welding construction, paying attention to no cutting of base metal during cutting, enabling the column top elevation and the axis of an upper steel column to be positioned by using a total station, erecting a steel pipe operating frame platform at the position of a steel column node in advance when an upper steel column is hoisted, wherein the platform is to be firmly erected, a safety worker needs to specially inspect and accept after the platform is erected, and the steel pipe operating frame can be used after the platform is qualified.
S3, dividing the hoisting of the roof main truss into twenty-four installation units, wherein each unit comprises two main trusses, and tie rods and secondary trusses are filled between the two main trusses;
s4, according to field assembly conditions, forming an assembly unit by two main trusses, respectively naming each truss as GHJ1, GHJ2 … … GHJ47, GHJ1 to GHJ9, and GHJ25 to GHJ33 to be hoisted in three sections, wherein GHJ10 to GHJ24 and GHJ25 to GHJ47 are not segmented, and hoisting sequence is carried out from unit one to unit twenty-four in sequence;
s4, carrying out supporting installation of the first section of main truss;
s5, when a section of main truss GHJ1 is constructed and installed, a hoisting device is hoisted by matching one crawler crane and two truck cranes, a section is first constructed and hoisted, two nodes of upper chords at the front end and the rear end of the section of main truss are dropped on lintels of two temporary supports, as shown in figure 4, a front end support point and a support are in place, a temporary protection plate is welded during support installation for improving the stability during truss installation and avoiding deviation during truss installation, a stable body is formed by five-point support, and a second-step steel column is constructed;
s6, hoisting the inclined upright post as shown in the figure 2 and the figure 3, installing a support part, hoisting the other end by a crane of 25t, rotating to a designed elevation to be welded with the first section of main truss in a penetrating way, installing the steel column in place, after the welding of the node part is finished and the requirement of a designed welding seam is met, hooking the front end and the rear end of the member by two Q16 steel wire ropes respectively towards two cranes with two tensioned sides, and hoisting the front end to hoist the two sections or the next main truss;
s7, forming a first mounting unit by supporting and mounting the second main truss GHJ2 and mounting the second main truss GHJ2 in accordance with steps S4-S6;
and S8, mounting the tie rods and the secondary trusses between the two main trusses, wherein the secondary trusses between the adjacent main trusses are in high-altitude butt joint, and the secondary trusses are integrally hoisted by using a truck crane. Two hoisting points are obtained through calculation before each truss is hoisted, so that the stress of each hoisting point is uniform in the hoisting process, the balance of the trusses in the hoisting process is ensured, and the trusses are sequentially hoisted from one side to the other side according to the installation sequence in one bay;
and S9, as shown in figure 1, circulating the steps S4-S7 to finish the rest twenty-three installation units, completing the installation of the roof truss, adjusting and checking the measurement axis and the elevation after one component is hoisted, welding firmly after the axis and the elevation are accurately checked, retesting the axis and the elevation of the main truss after the main truss is installed, ensuring that the longitudinal main truss keeps accurate position in the process of hoisting the secondary truss, and preventing torsion.
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 (2)
1. A construction method of a cantilever awning is characterized by comprising the following steps:
s1, firstly, measuring the embedded points of the anchor bolts, processing and manufacturing all the anchor bolts in a factory, then embedding the anchor bolts according to the measuring points after finishing binding the floor reinforcing steel bars, welding and fixing the anchor bolts by using the reinforcing steel bars, binding and fixing the vertical reinforcing steel bars of the concrete columns, then removing the temporary fixed template, and finally pouring concrete to finish embedding the anchor bolts;
s2, hoisting steel columns to build a support steel frame;
s3, dividing the hoisting of the roof main truss into twenty-four installation units, wherein each unit comprises two main trusses, and tie rods and secondary trusses are filled between the two main trusses;
s4, according to field assembly conditions, forming an installation unit by two main trusses, respectively naming each truss as GHJ1, GHJ2 … … GHJ48, GHJ1 to GHJ9 and GHJ25 to GHJ33, and hoisting the trusses into a first section of main truss, an oblique upright column and a second section of main truss, wherein the trusses from GHJ10 to GHJ24 and GHJ34 to GHJ48 are hoisted in a non-sectional mode, and hoisting sequence is sequentially carried out from unit one to unit twenty-four;
s5, mounting a first main truss;
s6, when a first-segment main truss GHJ1 is constructed and installed, firstly constructing and hoisting two upper chord nodes at the front end and the rear end of a first-segment main truss in the first-segment main truss to fall on two temporary supporting lintels on a supporting steel frame, positioning a front-end support point and a support in place, welding temporary protection plates when the support is installed, and forming a stable body through five-point supporting;
s7, hoisting the inclined upright post, installing a support part on the ground, installing one end of the inclined upright post on the support part, hoisting the other end of the inclined upright post by using a crane, rotating to a designed elevation to be communicated and welded with the first section of main truss, tensioning the front end and the rear end of a member on the inclined upright post to two sides by using steel wire ropes respectively, and hoisting the second section of main truss in the first truss by hoisting the front end;
s8, forming a first mounting unit by supporting and mounting the second main truss GHJ2 and mounting the first main truss GHJ1 in accordance with steps S5-S7;
s9, mounting tie rods and secondary trusses between the two main trusses, and butting the secondary trusses between the adjacent main trusses at high altitude;
and S10, completing hoisting of the rest of the segmental trusses by means of segmentation in the steps S5-S8, and completing the rest twenty-three installation units by integrally hoisting the non-segmental trusses.
2. The cantilever awning construction method as claimed in claim 1, wherein the installation order of the sub-trusses in step S8 is sequentially hoisted from side to side in a horizontal axis in one bay.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112982655B (en) * | 2021-03-10 | 2022-10-21 | 艾奕康设计与咨询(深圳)有限公司 | Spatial steel structure combined by triangular truss and single-layer latticed shell |
| CN113529952B (en) * | 2021-06-21 | 2022-11-04 | 中国航空规划设计研究总院有限公司 | Awning overhanging structure, building and construction method of awning overhanging structure |
| CN113982284A (en) * | 2021-10-28 | 2022-01-28 | 中铁三局集团建筑安装工程有限公司 | Installation method of large-span special-shaped steel structure toll booth |
| CN115324360A (en) * | 2022-07-27 | 2022-11-11 | 成都建工第四建筑工程有限公司 | Construction method of large-span suspended truss |
| CN115324256A (en) * | 2022-08-22 | 2022-11-11 | 中建七局国际工程建设有限公司 | Stadium overhanging roof based on triangular truss and construction method thereof |
| CN117646493B (en) * | 2023-12-15 | 2024-09-17 | 中铁建设集团南方工程有限公司 | Construction method of house Y-shaped column supporting structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3329000C2 (en) * | 1983-08-11 | 1991-11-21 | Mbm Multi-Bausysteme Gmbh, 8260 Muehldorf, De | |
| CN104631838A (en) * | 2014-12-08 | 2015-05-20 | 永升建设集团有限公司 | Method for installing abnormal-shaped extremely-large overhung steel truss under process monitoring construction |
| CN105133841A (en) * | 2015-07-29 | 2015-12-09 | 五洋建设集团股份有限公司 | Spatial curved surface steel structure pipe truss roof installation construction method |
| CN106836498A (en) * | 2016-12-28 | 2017-06-13 | 郑州工业应用技术学院 | A kind of super-span Stadium roof system steel truss lifting construction engineering method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7143550B1 (en) * | 2002-09-19 | 2006-12-05 | Conservatek Industries, Inc. | Double network reticulated frame structure |
| CN204081548U (en) * | 2014-08-29 | 2015-01-07 | 中国建筑第六工程局有限公司 | Cantilever frame temporary support and main couple joint portion device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3329000C2 (en) * | 1983-08-11 | 1991-11-21 | Mbm Multi-Bausysteme Gmbh, 8260 Muehldorf, De | |
| CN104631838A (en) * | 2014-12-08 | 2015-05-20 | 永升建设集团有限公司 | Method for installing abnormal-shaped extremely-large overhung steel truss under process monitoring construction |
| CN105133841A (en) * | 2015-07-29 | 2015-12-09 | 五洋建设集团股份有限公司 | Spatial curved surface steel structure pipe truss roof installation construction method |
| CN106836498A (en) * | 2016-12-28 | 2017-06-13 | 郑州工业应用技术学院 | A kind of super-span Stadium roof system steel truss lifting construction engineering method |
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