CN105003081A - Installing and positioning method of bidirectional skew grid of triangular section flexural-torsional members - Google Patents

Installing and positioning method of bidirectional skew grid of triangular section flexural-torsional members Download PDF

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Publication number
CN105003081A
CN105003081A CN201510226128.4A CN201510226128A CN105003081A CN 105003081 A CN105003081 A CN 105003081A CN 201510226128 A CN201510226128 A CN 201510226128A CN 105003081 A CN105003081 A CN 105003081A
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construction
bracing frame
lifting
support bracket
assembled
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CN201510226128.4A
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Chinese (zh)
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CN105003081B (en
Inventor
周观根
周烽炜
潘俊
沈晓飞
鲍成波
李�东
居小林
吴德胜
周元兴
朱树臣
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浙江东南网架股份有限公司
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Publication of CN105003081A publication Critical patent/CN105003081A/en
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Abstract

The invention relates to a grid installing and positioning method, in particular to an installing and positioning method of a bidirectional skew grid of triangular section flexural-torsional members, and belongs to the field of steel structures. The method includes the steps of deformation pre-control of the bidirectional skew grid of triangular section flexural-torsional members, attitude control and alignment for hoisting of the bidirectional skew grid of triangular section flexural-torsional members, mounting of assembled lattice bearing supports, and construction. The method using segmental hoisting has high safety.

Description

The two-way oblique grid installation and locating method of a kind of triangular-section bending component

Technical field

The present invention relates to a kind of grid installation and locating method, particularly relate to the two-way oblique grid installation and locating method of a kind of triangular-section bending component, belong to field of steel structure.

Background technology

Oblique grid system is made up of the brace of bidirectional crossed continued circling outer surface of building, instead of the combination of vertical column traditionally and skewed horizontal load, bears the vertical of structure and horizontal loading simultaneously.The rigidity of oblique grid is comparatively large, can bear very large horizontal loading, and thus structure may be designed to without supporting bending resistance rigid frame, and the layout for building interior provides very large degree of freedom.Skew lattice structure obtains the favor of architect increasingly, at center, stadium alien invasion as structure and decoration.

Bending component two-way oblique grid in triangular-section is the new space structures form occurred in recent years, is used to sport building because of its active graceful petal moulding.

Summary of the invention

The present invention mainly solves the deficiencies in the prior art, provides a kind of support performance outstanding, the two-way oblique grid installation and locating method of a kind of triangular-section bending component that lifting mode is scientific and reasonable.

Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:

A two-way oblique grid installation and locating method for triangular-section bending component, carries out according to the following steps:

(1), the distortion pre-control of the two-way skew lattice structure of triangular-section bending component:

Adopt structure reversible deformation strategy to solve the distortion pre-control problem of long cantilever construction, carry out the truss element Construction Simulation with departing from moulding bed two states in place, make hoisting process Deformation Member, stress all in specification allowed band, specific practice is:

1), according to the size of structure design working drawing set up initial calculation model, obtain the coordinate of structure under Gravitative Loads according to the result of calculation of Construction simulation;

2), the difference of each node calculate result coordinate and its initial coordinate is compensated to original dimension thus sets up new computation model;

3), to new computation model carry out Construction simulation, adjustment coordinate until meet the amount of deflection control overflow of specification, and obtains final computation model thus;

4), component operation drawing obtains through calculating according to final structural computational model;

5), the absolute altitude controlling value of end of encorbelmenting is final computation model simulative calculation of construction value, but not the calculated value of structure design working drawing initial calculation model;

6), lifting construction time, set up bracing frame according to the springing quantum determined and control elevation of top, when construction complete, bracing frame remove after, the form of long cantilever construction under Gravitative Loads just meets the requirement of design.

(2) gesture stability when, bending component two-way oblique grid in triangular-section lifts and contraposition:

The segmentation of truss is according to the gesture stability determination truss element when Lifting Capacity of crane and lifting;

(3), assembled lattice support bracket

Assembled lattice support bracket forms by multiple standard knot is with bolts, and standard knot is of a size of 2m × 2m × 1.5m, wherein the seamless steel pipe of vertical rod to be Φ 152 × 6, top-bottom chord and web member be Φ 89 × 5;

Each standard knot is made up of four patch unit, and patch unit entrucking is transported to scene, adopts mobile crane to be first assembled into the standard knot of 1.5 meters high, then by folded for standard knot high to designing requirement absolute altitude;

(4), construction process:

1, the on-site consolidation of lifting elements:

Vertical assembled moulding bed adopts square tube and the angle steel of Q235, and assembled moulding bed according to the feature of truss crossing rod piece, need choose assembled node location, and adjustable seats place, top arranges the location arc that can finely tune up and down;

Make an initial point (0,0) on the ground at smooth consolidation shed, initial point sets up total powerstation, draw mutually perpendicular two grid lines (X-axis, Y-axis) from initial point, be that control point releases ground line-transect with initial point, ground line-transect marks the position of assembled moulding bed;

Adopt loop wheel machine loose mail lifting rod member, first orientation triangle pipe mobile jib, then orientation triangle pipe time bar, relocates top collar steel pipe, finally location time pipe rod member;

During rod member location, mobile jib adopts interim otic placode to fix, and mobile jib adopts spot welding temporary fixed with time bar, and for avoiding welding stress to concentrate, grid entirety welding sequence is defined as from centre to both sides, and docking welding sequence is two some welded clockwise from relative 180 degree;

2, assembling support bracket is installed:

Before the lifting of assembling support bracket, first the upper end of one end of cable wind rope at support bracket should be fixed, and the handy iron wire of another end plate of cable rope is fixed on the lower end of support bracket;

Install the operating platform of support bracket upper end, auxiliary mould and safety protection facility simultaneously;

3, the segmental hoisting of unit:

When unit segmental hoisting is in place, state angle is different, needs to carry out aerial statue adjustment;

During wire rope colligation, need to mix jack, equalizer pulley;

According to the different spaces angle of different truss element, after lifting, utilize jack to adjust angle, make it to be convenient to dock with the Fast Installation of adjacent cells;

Coordinate in installation position total powerstation jack to finely tune, after reaching precision, adopt connection otic placode temporary fixed in time;

4, closure construction:

Closed position must overallly disconnect diametrically, close up the selection and comparison difficulty of line, when determining to close up line, not only to consider the force and deformation situation of structure itself, also should consider the integral installation order of steel work and the installation segmentation situation of Earthquake response simultaneously, reduce the quantity of closing up a little as far as possible, particularly close up the quantity of mouth;

Close up the rod member that line avoids steel-casting and thickness of slab as far as possible in addition, reduce welding job amount, with convenient construction, reduce the input of personnel when closing up, equipment and other resource, and guarantee the safety of work progress;

5, bracing frame entirety unloading:

The unloading step of bracing frame is:

1) interval unloads a Pin bracing frame, and once unloading puts in place;

2) remain bracing frame according to equal proportion discharging method, unload 1/4 of full displacement;

3) remain bracing frame according to equal proportion discharging method, be unloaded to 2/4 of full displacement;

4) remain bracing frame according to equal proportion discharging method, be unloaded to 3/4 of full displacement;

5) last all dismountings;

Uninstall process, must make structural internal force distribute gently, and malformation and internal force can not suddenly change; In order to meet these conditions, uninstall process safety must be ensured by work progress checking computations.

The invention provides the two-way oblique grid installation and locating method of a kind of triangular-section bending component, segmental hoisting, security performance is high.

Detailed description of the invention

Below by embodiment, technical scheme of the present invention is described in further detail.

Embodiment 1: the two-way oblique grid installation and locating method of a kind of triangular-section bending component, carry out according to the following steps:

(1), the distortion pre-control of the two-way skew lattice structure of triangular-section bending component:

Adopt structure reversible deformation strategy to solve the distortion pre-control problem of long cantilever construction, carry out the truss element Construction Simulation with departing from moulding bed two states in place, make hoisting process Deformation Member, stress all in specification allowed band, specific practice is:

1), according to the size of structure design working drawing set up initial calculation model, obtain the coordinate of structure under Gravitative Loads according to the result of calculation of Construction simulation;

3), the difference of each node calculate result coordinate and its initial coordinate is compensated to original dimension thus sets up new computation model;

3), to new computation model carry out Construction simulation, adjustment coordinate until meet the amount of deflection control overflow of specification, and obtains final computation model thus;

4), component operation drawing obtains through calculating according to final structural computational model;

5), the absolute altitude controlling value of end of encorbelmenting is final computation model simulative calculation of construction value, but not the calculated value of structure design working drawing initial calculation model;

6), lifting construction time, set up bracing frame according to the springing quantum determined and control elevation of top, when construction complete, bracing frame remove after, the form of long cantilever construction under Gravitative Loads just meets the requirement of design.

(2) gesture stability when, bending component two-way oblique grid in triangular-section lifts and contraposition:

The segmentation of truss is according to the gesture stability determination truss element when Lifting Capacity of crane and lifting;

(3), assembled lattice support bracket

Assembled lattice support bracket forms by multiple standard knot is with bolts, and standard knot is of a size of 2m × 2m × 1.5m, wherein the seamless steel pipe of vertical rod to be Φ 152 × 6, top-bottom chord and web member be Φ 89 × 5;

Each standard knot is made up of four patch unit, and patch unit entrucking is transported to scene, adopts mobile crane to be first assembled into the standard knot of 1.5 meters high, then by folded for standard knot high to designing requirement absolute altitude;

(4), construction process:

1, the on-site consolidation of lifting elements:

Vertical assembled moulding bed adopts square tube and the angle steel of Q235, and assembled moulding bed according to the feature of truss crossing rod piece, need choose assembled node location, and adjustable seats place, top arranges the location arc that can finely tune up and down;

Make an initial point (0,0) on the ground at smooth consolidation shed, initial point sets up total powerstation, draw mutually perpendicular two grid lines (X-axis, Y-axis) from initial point, be that control point releases ground line-transect with initial point, ground line-transect marks the position of assembled moulding bed;

Adopt loop wheel machine loose mail lifting rod member, first orientation triangle pipe mobile jib, then orientation triangle pipe time bar, relocates top collar steel pipe, finally location time pipe rod member;

During rod member location, mobile jib adopts interim otic placode to fix, and mobile jib adopts spot welding temporary fixed with time bar, and for avoiding welding stress to concentrate, grid entirety welding sequence is defined as from centre to both sides, and docking welding sequence is two some welded clockwise from relative 180 degree;

2, assembling support bracket is installed:

Before the lifting of assembling support bracket, first the upper end of one end of cable wind rope at support bracket should be fixed, and the handy iron wire of another end plate of cable rope is fixed on the lower end of support bracket;

Install the operating platform of support bracket upper end, auxiliary mould and safety protection facility simultaneously;

3, the segmental hoisting of unit:

When unit segmental hoisting is in place, state angle is different, needs to carry out aerial statue adjustment;

During wire rope colligation, need to mix jack, equalizer pulley;

According to the different spaces angle of different truss element, after lifting, utilize jack to adjust angle, make it to be convenient to dock with the Fast Installation of adjacent cells;

Coordinate in installation position total powerstation jack to finely tune, after reaching precision, adopt connection otic placode temporary fixed in time;

4, closure construction:

Closed position must overallly disconnect diametrically, close up the selection and comparison difficulty of line, when determining to close up line, not only to consider the force and deformation situation of structure itself, also should consider the integral installation order of steel work and the installation segmentation situation of Earthquake response simultaneously, reduce the quantity of closing up a little as far as possible, particularly close up the quantity of mouth;

Close up the rod member that line avoids steel-casting and thickness of slab as far as possible in addition, reduce welding job amount, with convenient construction, reduce the input of personnel when closing up, equipment and other resource, and guarantee the safety of work progress;

5, bracing frame entirety unloading:

The unloading step of bracing frame is:

1) interval unloads a Pin bracing frame, and once unloading puts in place;

2) remain bracing frame according to equal proportion discharging method, unload 1/4 of full displacement;

3) remain bracing frame according to equal proportion discharging method, be unloaded to 2/4 of full displacement;

4) remain bracing frame according to equal proportion discharging method, be unloaded to 3/4 of full displacement;

5) last all dismountings;

Uninstall process, must make structural internal force distribute gently, and malformation and internal force can not suddenly change; In order to meet these conditions, uninstall process safety must be ensured by work progress checking computations.

Claims (1)

1. a two-way oblique grid installation and locating method for triangular-section bending component, is characterized in that carrying out according to the following steps:
(1), the distortion pre-control of the two-way skew lattice structure of triangular-section bending component:
Adopt structure reversible deformation strategy to solve the distortion pre-control problem of long cantilever construction, carry out the truss element Construction Simulation with departing from moulding bed two states in place, make hoisting process Deformation Member, stress all in specification allowed band, specific practice is:
1), according to the size of structure design working drawing set up initial calculation model, obtain the coordinate of structure under Gravitative Loads according to the result of calculation of Construction simulation;
2), the difference of each node calculate result coordinate and its initial coordinate is compensated to original dimension thus sets up new computation model;
3), to new computation model carry out Construction simulation, adjustment coordinate until meet the amount of deflection control overflow of specification, and obtains final computation model thus;
4), component operation drawing obtains through calculating according to final structural computational model;
5), the absolute altitude controlling value of end of encorbelmenting is final computation model simulative calculation of construction value, but not the calculated value of structure design working drawing initial calculation model;
6), lifting construction time, set up bracing frame according to the springing quantum determined and control elevation of top, when construction complete, bracing frame remove after, the form of long cantilever construction under Gravitative Loads just meets the requirement of design;
(2) gesture stability when, bending component two-way oblique grid in triangular-section lifts and contraposition:
The segmentation of truss is according to the gesture stability determination truss element when Lifting Capacity of crane and lifting;
(3), assembled lattice support bracket
Assembled lattice support bracket forms by multiple standard knot is with bolts, and standard knot is of a size of 2m × 2m × 1.5m, wherein the seamless steel pipe of vertical rod to be Φ 152 × 6, top-bottom chord and web member be Φ 89 × 5;
Each standard knot is made up of four patch unit, and patch unit entrucking is transported to scene, adopts mobile crane to be first assembled into the standard knot of 1.5 meters high, then by folded for standard knot high to designing requirement absolute altitude;
(4), construction process:
1, the on-site consolidation of lifting elements:
Vertical assembled moulding bed adopts square tube and the angle steel of Q235, and assembled moulding bed according to the feature of truss crossing rod piece, need choose assembled node location, and adjustable seats place, top arranges the location arc that can finely tune up and down;
Make an initial point (0,0) on the ground at smooth consolidation shed, initial point sets up total powerstation, draw mutually perpendicular two grid lines (X-axis, Y-axis) from initial point, be that control point releases ground line-transect with initial point, ground line-transect marks the position of assembled moulding bed;
Adopt loop wheel machine loose mail lifting rod member, first orientation triangle pipe mobile jib, then orientation triangle pipe time bar, relocates top collar steel pipe, finally location time pipe rod member;
During rod member location, mobile jib adopts interim otic placode to fix, and mobile jib adopts spot welding temporary fixed with time bar, and for avoiding welding stress to concentrate, grid entirety welding sequence is defined as from centre to both sides, and docking welding sequence is two some welded clockwise from relative 180 degree;
2, assembling support bracket is installed:
Before the lifting of assembling support bracket, first the upper end of one end of cable wind rope at support bracket should be fixed, and the handy iron wire of another end plate of cable rope is fixed on the lower end of support bracket;
Install the operating platform of support bracket upper end, auxiliary mould and safety protection facility simultaneously;
3, the segmental hoisting of unit:
When unit segmental hoisting is in place, state angle is different, needs to carry out aerial statue adjustment;
During wire rope colligation, need to mix jack, equalizer pulley;
According to the different spaces angle of different truss element, after lifting, utilize jack to adjust angle, make it to be convenient to dock with the Fast Installation of adjacent cells;
Coordinate in installation position total powerstation jack to finely tune, after reaching precision, adopt connection otic placode temporary fixed in time;
4, closure construction:
Closed position must overallly disconnect diametrically, close up the selection and comparison difficulty of line, when determining to close up line, not only to consider the force and deformation situation of structure itself, also should consider the integral installation order of steel work and the installation segmentation situation of Earthquake response simultaneously, reduce the quantity of closing up a little as far as possible, particularly close up the quantity of mouth;
Close up the rod member that line avoids steel-casting and thickness of slab as far as possible in addition, reduce welding job amount, with convenient construction, reduce the input of personnel when closing up, equipment and other resource, and guarantee the safety of work progress;
5, bracing frame entirety unloading:
The unloading step of bracing frame is:
1) interval unloads a Pin bracing frame, and once unloading puts in place;
2) remain bracing frame according to equal proportion discharging method, unload 1/4 of full displacement;
3) remain bracing frame according to equal proportion discharging method, be unloaded to 2/4 of full displacement;
4) remain bracing frame according to equal proportion discharging method, be unloaded to 3/4 of full displacement;
5) last all dismountings;
Uninstall process, must make structural internal force distribute gently, and malformation and internal force can not suddenly change; In order to meet these conditions, uninstall process safety must be ensured by work progress checking computations.
CN201510226128.4A 2015-05-06 2015-05-06 A kind of two-way oblique grid installation and locating method of triangular-section bending component CN105003081B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514270A (en) * 2018-11-27 2019-03-26 郑州大学 A kind of welding method of new steel structure spherical reticulated shells triangular framing

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JPH09273225A (en) * 1996-04-08 1997-10-21 Tomoe Corp Structure construction method of large span frame in large space truss structure
KR100845461B1 (en) * 2007-01-08 2008-07-10 진요임 Building construction keeping cover truss
CN201391091Y (en) * 2008-12-15 2010-01-27 上海建浩工程顾问有限公司 Super high-rise building giant steel member mounting measurement pre-control and correcting system
CN102839747A (en) * 2012-09-24 2012-12-26 中国建筑第八工程局有限公司 Construction method for steel structure truss of super high-rise special structure
CN104060837A (en) * 2014-04-30 2014-09-24 浙江东南网架股份有限公司 Mounting positioning method of two-way skew curved combined truss

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09273225A (en) * 1996-04-08 1997-10-21 Tomoe Corp Structure construction method of large span frame in large space truss structure
KR100845461B1 (en) * 2007-01-08 2008-07-10 진요임 Building construction keeping cover truss
CN201391091Y (en) * 2008-12-15 2010-01-27 上海建浩工程顾问有限公司 Super high-rise building giant steel member mounting measurement pre-control and correcting system
CN102839747A (en) * 2012-09-24 2012-12-26 中国建筑第八工程局有限公司 Construction method for steel structure truss of super high-rise special structure
CN104060837A (en) * 2014-04-30 2014-09-24 浙江东南网架股份有限公司 Mounting positioning method of two-way skew curved combined truss

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易勇等: "双向斜交斜放空间桁架折板结构体系安装技术的研究与应用", 《 中国钢结构协会房屋建筑钢结构分会2013年学术年会论文集》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514270A (en) * 2018-11-27 2019-03-26 郑州大学 A kind of welding method of new steel structure spherical reticulated shells triangular framing

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