CN104060837A - Mounting positioning method of two-way skew curved combined truss - Google Patents
Mounting positioning method of two-way skew curved combined truss Download PDFInfo
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- CN104060837A CN104060837A CN201410180421.7A CN201410180421A CN104060837A CN 104060837 A CN104060837 A CN 104060837A CN 201410180421 A CN201410180421 A CN 201410180421A CN 104060837 A CN104060837 A CN 104060837A
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Abstract
The invention relates to a two-way skew curved combined truss, in particular to a mounting positioning method of a two-way skew curved combined truss, and is applied to a steel structure. The mounting positioning method comprises the following steps: a combination and segmentation method of the two-way skew curved combined truss and a mounting positioning method of combined truss hoisting units. Through the adoption of the mounting positioning method of the two-way skew curved combined truss, the structure is compact, the mounting speed is high, the stability is high, and the mounting precision is high.
Description
Technical field
The present invention relates to the crooked composite roof truss of a kind of two-way oblique, relate in particular to the installation and locating method of the crooked composite roof truss of a kind of two-way oblique, be applied in steel work.
Background technology
In recent years, along with social development, public building is more and more extensive for the application of longspan structure, and steel truss structure is wherein to apply commonplace a kind of form of structure.Due to the pursuit of architect for large span and body aesthetic feeling, impel trussed construction constantly to advance, and the crooked composite roof truss of two-way oblique is exactly wherein comparatively complicated a kind of truss form.
Because the crooked composite roof truss both direction of two-way oblique oblique truss does not have specific primary and secondary truss to divide foundation, therefore in this structure, segmentation is installed and divides, the aspects such as positioning control are installed, there is larger difficulty, proposed larger challenge to on-the-spot installation.
Summary of the invention
The present invention solves the deficiencies in the prior art, and a kind of compact conformation is provided, and has that installation unit Stability Analysis of Structures, overhead welding amount are few, the installation and locating method of the crooked composite roof truss of two-way oblique that convenient fixing is installed.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
An installation and locating method for the crooked composite roof truss of two-way oblique, carries out according to the following steps:
(1), the combined section method of the crooked composite roof truss of two-way oblique:
According to construction condition, people is main to truss for drafting a direction, main to truss sections unit and be inferiorly combined into an on-site hoisting unit to truss member by two;
By the connection of each combined hanging unit on facade, form whole Pin Radial Combinations truss;
Adjacent two Pin Radial Combinations truss connect to truss member by inferior, progressively form the crooked composite roof truss structure of whole two-way oblique;
(2), composite roof truss lifting elements installation and locating method:
(1), the location of temporary support:
According to the design attitude of temporary support built-in fitting, on drawing, according to the position calculation of existing horizontal control point, bench mark, go out the relative coordinate of bracing frame embedded board central point, then utilize total powerstation to measure this position, and carry out on the ground mark;
The temporary support of often setting up a joint height will carry out with total powerstation the measurement update of verticality and levelness, after setting up, need to check levelness and verticality equally before truss lifting, and makes a record;
After truss hoisted in position, temporary support deforms owing to being subject to truss Action of Gravity Field, therefore will to temporary support, carry out the measurement of regular verticality and levelness, according to measurement result, takes adjustment measure, to guarantee structural safety, stable, effective;
Temporary supporting top of the trellis is installed composite roof truss unit lower edge strong point coordinate position according to need, and vertical strut is set, top truss element by vertical strut power transmission to bottom temporary support;
(2), the control of the installation accuracy of composite roof truss:
, lower mid-chord line throwing survey:
Laser plummet is set up respectively on the laser controlling point of six micrometric measurements, pilot measurement laser controlling is put on the platform laying vertically upward, and do better position mark, then on platform, through total powerstation, carry out angle and distance closure, precision is good, length of side error is controlled in 1/30000 scope, and angular error is controlled at 6 " in scope;
After six control positional accuracies meet, set up respectively instrument in main control Nodes, center line is surveyed and is located on each measuring table, and indicate with the line of ink marker;
, the lower edge throwing of controlling node surveys:
Because every truss structure segmentation is assembled, thus every section all must carry out node control, according to truss sections situation, node is as controlling foundation;
With reference to civil engineering floor building axis line net, selected orientation axis is as controlling baseline, on this baseline, by analytic method, find out and control the projection of node and the intersection point of baseline, then respectively these intersection points are thrown and measured on platform, and intersect with lower chord center line projection line, obtain lower edge and control the subpoint of node on horizontal plane;
Every like this truss structure straightness accuracy is controlled just to take and is surveyed and set mid-chord line as foundation on measuring table, and the method by ceiling hammer completes, and straightness accuracy control target is 10mm;
, truss absolute altitude control:
If moulding bed is settlement stability after load-bearing, can carry out high process control, set up on the ground level gauge, backsight ordnance bench mark, adopt steel ruler to join S3 level gauge, absolute altitude can be sent on moulding bed, make better bit flag, select every segmented node the right and left lower-chord panel point to be projected in respectively on the incident line of truss center, carry out node label;
Adopt total powerstation to carry out trigonometric heighting and measure the node both sides discrepancy in elevation, and with the comparison of design node absolute altitude, mark near platform upslide is hinted obliquely at node, with this, make the foundation of jack adjusting elevation, in length and breadth to depth of truss allowable variation+10mm.
Therefore, the installation and locating method of the crooked composite roof truss of two-way oblique of the present invention, compact conformation, installation rate is fast, and steadiness is high, and installation accuracy is high.
Accompanying drawing explanation
Fig. 1 is the facade structures schematic diagram of the crooked composite roof truss of the two-way oblique of the present invention;
Fig. 2 is the structural representation of combined hanging unit in the present invention;
Fig. 3 is the structural representation of whole Pin Radial Combinations truss in the present invention.
Fig. 4 is the structural representation of the whole Pin Radial Combinations of adjacent two Pin truss in the present invention;
Fig. 5 is the structural representation of temporary support in the present invention.
Reference numeral: 1, mainly add segmenting unit to purlin; 2, inferior to truss member; 3, combined hanging unit 1; 4, combined hanging unit 2; 5, combined hanging unit 3; 6, combined hanging unit 4; 7, whole Pin Radial Combinations truss; 8, temporary support; 9, vertical strut.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
1, embodiment 1: as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the installation and locating method of the crooked composite roof truss of a kind of two-way oblique, is characterized in that carrying out according to the following steps:
(1), the combined section method of the crooked composite roof truss of two-way oblique:
According to construction condition, people is main to truss for drafting a direction, main to truss sections unit 1 and be inferiorly combined into an on-site hoisting unit to truss member 2 by two;
By the connection of each combined hanging unit 3,4,5,6 on facade, form whole Pin Radial Combinations truss 7;
Adjacent two Pin Radial Combinations truss connect to truss member 2 by inferior, progressively form the crooked composite roof truss structure of whole two-way oblique;
(2), composite roof truss lifting elements installation and locating method:
(1), the location of temporary support:
According to the design attitude of temporary support built-in fitting, on drawing, according to the position calculation of existing horizontal control point, bench mark, go out the relative coordinate of bracing frame embedded board central point, then utilize total powerstation to measure this position, and carry out on the ground mark;
The temporary support of often setting up a joint height will carry out with total powerstation the measurement update of verticality and levelness, after setting up, need to check levelness and verticality equally before truss lifting, and makes a record;
After truss hoisted in position, temporary support deforms owing to being subject to truss Action of Gravity Field, therefore will to temporary support, carry out the measurement of regular verticality and levelness, according to measurement result, takes adjustment measure, to guarantee structural safety, stable, effective;
Composite roof truss unit lower edge strong point coordinate position is installed according to need in temporary support 8 tops, and vertical strut 9 is set, top truss element by vertical strut 9 power transmissions to bottom temporary support;
(2), the control of the installation accuracy of composite roof truss:
1, the throwing of lower mid-chord line is surveyed:
Laser plummet is set up respectively on the laser controlling point of six micrometric measurements, pilot measurement laser controlling is put on the platform laying vertically upward, and do better position mark, then on platform, through total powerstation, carry out angle and distance closure, precision is good, length of side error is controlled in 1/30000 scope, and angular error is controlled at 6 " in scope;
After six control positional accuracies meet, set up respectively instrument in main control Nodes, center line is surveyed and is located on each measuring table, and indicate with the line of ink marker;
2, lower edge is controlled the throwing survey of node:
Because every truss structure segmentation is assembled, thus every section all must carry out node control, according to truss sections situation, node is as controlling foundation;
With reference to civil engineering floor building axis line net, selected orientation axis is as controlling baseline, on this baseline, by analytic method, find out and control the projection of node and the intersection point of baseline, then respectively these intersection points are thrown and measured on platform, and intersect with lower chord center line projection line, obtain lower edge and control the subpoint of node on horizontal plane;
Every like this truss structure straightness accuracy is controlled just to take and is surveyed and set mid-chord line as foundation on measuring table, and the method by ceiling hammer completes, and straightness accuracy control target is 10mm;
3, the control of truss absolute altitude:
If moulding bed is settlement stability after load-bearing, can carry out high process control, set up on the ground level gauge, backsight ordnance bench mark, adopt steel ruler to join S3 level gauge, absolute altitude can be sent on moulding bed, make better bit flag, select every segmented node the right and left lower-chord panel point to be projected in respectively on the incident line of truss center, carry out node label;
Adopt total powerstation to carry out trigonometric heighting and measure the node both sides discrepancy in elevation, and with the comparison of design node absolute altitude, mark near platform upslide is hinted obliquely at node, with this, make the foundation of jack adjusting elevation, in length and breadth to depth of truss allowable variation+10mm.
Claims (1)
1. an installation and locating method for the crooked composite roof truss of two-way oblique, is characterized in that carrying out according to the following steps:
(1), the combined section method of the crooked composite roof truss of two-way oblique:
According to construction condition, people is main to truss for drafting a direction, main to truss sections unit (1) and be inferiorly combined into an on-site hoisting unit to truss member (2) by two;
Connection by each combined hanging unit (3,4,5,6) on facade, forms whole Pin Radial Combinations truss (7);
Adjacent two Pin Radial Combinations truss connect to truss member (2) by inferior, progressively form the crooked composite roof truss structure of whole two-way oblique;
(2), composite roof truss lifting elements installation and locating method:
(1), the location of temporary support:
According to the design attitude of temporary support built-in fitting, on drawing, according to the position calculation of existing horizontal control point, bench mark, go out the relative coordinate of bracing frame embedded board central point, then utilize total powerstation to measure this position, and carry out on the ground mark;
The temporary support of often setting up a joint height will carry out with total powerstation the measurement update of verticality and levelness, after setting up, need to check levelness and verticality equally before truss lifting, and makes a record;
After truss hoisted in position, temporary support deforms owing to being subject to truss Action of Gravity Field, therefore will to temporary support, carry out the measurement of regular verticality and levelness, according to measurement result, takes adjustment measure, to guarantee structural safety, stable, effective;
Composite roof truss unit lower edge strong point coordinate position is installed according to need in temporary support (8) top, and vertical strut (9) is set, top truss element by vertical strut (9) power transmission to bottom temporary support;
(2), the control of the installation accuracy of composite roof truss:
1, the throwing of lower mid-chord line is surveyed:
Laser plummet is set up respectively on the laser controlling point of six micrometric measurements, pilot measurement laser controlling is put on the platform laying vertically upward, and do better position mark, then on platform, through total powerstation, carry out angle and distance closure, precision is good, length of side error is controlled in 1/30000 scope, and angular error is controlled at 6 " in scope;
After six control positional accuracies meet, set up respectively instrument in main control Nodes, center line is surveyed and is located on each measuring table, and indicate with the line of ink marker;
2, lower edge is controlled the throwing survey of node:
Because every truss structure segmentation is assembled, thus every section all must carry out node control, according to truss sections situation, node is as controlling foundation;
With reference to civil engineering floor building axis line net, selected orientation axis is as controlling baseline, on this baseline, by analytic method, find out and control the projection of node and the intersection point of baseline, then respectively these intersection points are thrown and measured on platform, and intersect with lower chord center line projection line, obtain lower edge and control the subpoint of node on horizontal plane;
Every like this truss structure straightness accuracy is controlled just to take and is surveyed and set mid-chord line as foundation on measuring table, and the method by ceiling hammer completes, and straightness accuracy control target is 10mm;
3, the control of truss absolute altitude:
If moulding bed is settlement stability after load-bearing, can carry out high process control, set up on the ground level gauge, backsight ordnance bench mark, adopt steel ruler to join S3 level gauge, absolute altitude can be sent on moulding bed, make better bit flag, select every segmented node the right and left lower-chord panel point to be projected in respectively on the incident line of truss center, carry out node label;
Adopt total powerstation to carry out trigonometric heighting and measure the node both sides discrepancy in elevation, and with the comparison of design node absolute altitude, mark near platform upslide is hinted obliquely at node, with this, make the foundation of jack adjusting elevation, in length and breadth to depth of truss allowable variation+10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180421.7A CN104060837B (en) | 2014-04-30 | The installation and locating method of two-way oblique bending composite roof truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180421.7A CN104060837B (en) | 2014-04-30 | The installation and locating method of two-way oblique bending composite roof truss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104060837A true CN104060837A (en) | 2014-09-24 |
| CN104060837B CN104060837B (en) | 2016-11-30 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003081A (en) * | 2015-05-06 | 2015-10-28 | 浙江东南网架股份有限公司 | Installing and positioning method of bidirectional skew grid of triangular section flexural-torsional members |
| CN105064728A (en) * | 2015-07-15 | 2015-11-18 | 中国建筑第二工程局有限公司 | Assembly structure of ski field and construction method thereof |
| CN105735131A (en) * | 2016-03-04 | 2016-07-06 | 上海十三冶建设有限公司 | Ultra-high ultra-large-span box type component truss splicing method |
| CN107023075A (en) * | 2017-05-03 | 2017-08-08 | 浙江中南建设集团钢结构有限公司 | A kind of interim control method of assembled steel truss installa-tion lateral stability |
| CN108489450A (en) * | 2018-03-14 | 2018-09-04 | 江苏恒久钢构有限公司 | A kind of truss deformation value measurement method |
| CN108532984A (en) * | 2018-03-14 | 2018-09-14 | 江苏恒久钢构有限公司 | A kind of support jig high accuracy install method |
| CN109138448A (en) * | 2018-10-19 | 2019-01-04 | 防城港中重工有限公司 | The discontinuous pipe truss installation method of the curved knob in space |
| CN111021555A (en) * | 2019-12-31 | 2020-04-17 | 北京城建集团有限责任公司 | Manufacturing method of bent and twisted multi-tube bolt welding combined node |
| CN111042539A (en) * | 2019-12-02 | 2020-04-21 | 中建钢构有限公司 | Single-point support installation construction method for large-span steel structure truss |
| CN111390484A (en) * | 2020-04-18 | 2020-07-10 | 合肥皖兴建设工程有限公司 | Steel structure supporting structure adjusting and positioning equipment and adjusting and positioning method |
| CN111411779A (en) * | 2020-03-30 | 2020-07-14 | 中国五冶集团有限公司 | Quickly-adjustable curve pipe truss pre-assembling tool and assembling and adjusting method thereof |
| CN113670274A (en) * | 2021-08-09 | 2021-11-19 | 浙江东南网架股份有限公司 | Measuring and positioning method for spatial prismatic steel truss |
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| JP2006307525A (en) * | 2005-04-28 | 2006-11-09 | Asahi Kasei Homes Kk | Method and implement for constructing wall panel |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003081A (en) * | 2015-05-06 | 2015-10-28 | 浙江东南网架股份有限公司 | Installing and positioning method of bidirectional skew grid of triangular section flexural-torsional members |
| CN105064728A (en) * | 2015-07-15 | 2015-11-18 | 中国建筑第二工程局有限公司 | Assembly structure of ski field and construction method thereof |
| CN105735131A (en) * | 2016-03-04 | 2016-07-06 | 上海十三冶建设有限公司 | Ultra-high ultra-large-span box type component truss splicing method |
| CN107023075A (en) * | 2017-05-03 | 2017-08-08 | 浙江中南建设集团钢结构有限公司 | A kind of interim control method of assembled steel truss installa-tion lateral stability |
| CN108489450A (en) * | 2018-03-14 | 2018-09-04 | 江苏恒久钢构有限公司 | A kind of truss deformation value measurement method |
| CN108532984A (en) * | 2018-03-14 | 2018-09-14 | 江苏恒久钢构有限公司 | A kind of support jig high accuracy install method |
| CN109138448A (en) * | 2018-10-19 | 2019-01-04 | 防城港中重工有限公司 | The discontinuous pipe truss installation method of the curved knob in space |
| CN111042539A (en) * | 2019-12-02 | 2020-04-21 | 中建钢构有限公司 | Single-point support installation construction method for large-span steel structure truss |
| CN111042539B (en) * | 2019-12-02 | 2022-06-24 | 中建钢构工程有限公司 | Single-point support installation construction method for large-span steel structure truss |
| CN111021555A (en) * | 2019-12-31 | 2020-04-17 | 北京城建集团有限责任公司 | Manufacturing method of bent and twisted multi-tube bolt welding combined node |
| CN111021555B (en) * | 2019-12-31 | 2021-04-30 | 北京城建集团有限责任公司 | Manufacturing method of bent and twisted multi-tube bolt welding combined node |
| CN111411779A (en) * | 2020-03-30 | 2020-07-14 | 中国五冶集团有限公司 | Quickly-adjustable curve pipe truss pre-assembling tool and assembling and adjusting method thereof |
| CN111390484A (en) * | 2020-04-18 | 2020-07-10 | 合肥皖兴建设工程有限公司 | Steel structure supporting structure adjusting and positioning equipment and adjusting and positioning method |
| CN111390484B (en) * | 2020-04-18 | 2020-11-10 | 上海绿地建设(集团)有限公司 | Steel structure supporting structure adjusting and positioning equipment and adjusting and positioning method |
| CN113670274A (en) * | 2021-08-09 | 2021-11-19 | 浙江东南网架股份有限公司 | Measuring and positioning method for spatial prismatic steel truss |
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