CN103114732B - Cast steel penetration pipe node space positioning method - Google Patents

Cast steel penetration pipe node space positioning method Download PDF

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Publication number
CN103114732B
CN103114732B CN201310047290.0A CN201310047290A CN103114732B CN 103114732 B CN103114732 B CN 103114732B CN 201310047290 A CN201310047290 A CN 201310047290A CN 103114732 B CN103114732 B CN 103114732B
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China
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location
plate
branch
pipe node
sectional
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CN201310047290.0A
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Chinese (zh)
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CN103114732A (en
Inventor
薛鹏飞
冯战坤
张涛
洪玉龙
许静波
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陕西建工集团机械施工有限公司
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Abstract

The invention discloses a cast steel penetration pipe node space positioning method which includes a first step of selecting branches capable of conveniently controlling cast steel penetration pipe nodes, a second step of determining positions of positioning plates, a third step of enabling the number of the control branches to be no less than three, a fourth step of using computer-aided design (CAD) mapping software to analyze and calculate positioning section contours of the control branches and relevant special point coordinates under an engineering construction coordinate system, and manufacturing the positioning section contours according to 1:1 proportion, a fifth step of using a total station to measure the horizontal projection of an axis of each control branch, installing and reinforcing an H-shaped steel support frame according to the relevant special point coordinates, a sixth step of measuring control lines of the positioning plates, installing and reinforcing the positioning plates, and a seventh step of carrying out elevation rough adjustment of the control branches on the ground, and then enabling the cast steel nodes to be directly installed in place when the cast steel penetration pipe nodes are installed. According to the cast steel penetration pipe node space positioning method, the positioning support frame is light in weight, and capable of being installed by manual work, and does not occupy large-scale hoisting machinery. The nodes are directly installed in place, free from repeatedly positioning adjustment, and short in installation time, and construction efficiency is greatly improved.

Description

Intersecting pipe node space-location method

[technical field]

The invention belongs to space orientation technique field, relate to the space-location method that intersecting pipe node is installed.

[background technology]

Cast steel node flexible form is various, design of node degree of freedom is large, stress performance is safe and reliable, adopts in the Node In Large-span Pipe Truss structural steelworks such as increasing conference and exhibition center of China, stadium, terminal.Because cast steel node profile is pipe intersecting shape formula, each branch is pipe, accurately cannot determine each branching characteristic control point, and then total powerstation cannot be utilized directly to carry out three-dimensional coordinate control location to cast steel node.

The method of current employing is measuring intersecting pipe node each branch axis horizontal projection line in the mounted state, successively as control line, set up bracing frame, plumb bob is utilized to adjust intersecting joint branch mouth of pipe center position, the mouth of pipe central projection of Shi Ge branch overlaps with corresponding control line, be welded and fixed with connecting rod, complete installation.There is following shortcoming in conventional method:

1, each branch of intersecting pipe node is pipe, accurately cannot determine branch's mouth of pipe central point; Mostly there is certain angle in branch with horizontal plane, and survey crew accurately cannot estimate mouth of pipe central projection on control line, and the method control accuracy is not high.

2, need many people to carry out Survey control to each branch, the specialized capability of survey crew and strong wind weather affect larger on certainty of measurement simultaneously.

3, intersecting pipe node needs repeated multiple times adjustment, and take the large lifting equipment time longer, installation effectiveness is low.

[summary of the invention]

The object of the present invention is to provide a kind of intersecting pipe node space-location method, the problem that prior art control accuracy is not high to overcome, installation effectiveness is low;

To achieve these goals, the present invention adopts following technical scheme:

A kind of intersecting pipe node space-location method, comprises the following steps:

1) the control branch of observing and controlling intersecting pipe node, is determined: the quantity controlling branch is no less than three; Control branch and comprise following two selection principles: 1. select supervisor; 2. the figure that intersecting pipe node center of gravity line is formed through each control branch mouth of pipe line of centres will at least be ensured;

2) position controlling to locate circular arc under branch, is determined: require location-plate and corresponding to control branch's axis horizontal projection vertical; Location-plate is 50 ~ 100mm with the corresponding axial distance controlling branch's mouth of pipe;

3), use CAD mapping software, intersecting pipe node threedimensional model is analyzed: set up user coordinate system, make user coordinate system and this engineering construction coordinate system consistent; Step 1), 2) in the control branch that determines and location-plate Position input computer, analytical calculation exports the localized cross-sectional profile, localized cross-sectional minimum point a three-dimensional coordinate, the plane coordinates of any two points b, c on localized cross-sectional horizontal projection line that control branch;

4) intersecting pipe node location-plate, is made: according to localized cross-sectional profile, steel plate is used to make location-plate in 1:1 ratio, location-plate circular arc angle controls between 120 ° ~ 180 °, and marks circular arc axis of symmetry, and the bottom surface of location-plate is vertical with circular arc axis of symmetry;

5), intersecting pipe node bracing frame is installed: according to in-site measurement Controling network, intersecting pipe node branch axis joint coordinate, localized cross-sectional minimum point a coordinate, utilize total powerstation measuring to go out to control branch's axis horizontal projection line, then bracing frame is installed; The end face absolute altitude of bracing frame is the vertical coordinate value of localized cross-sectional minimum point a and the difference of location-plate minimum constructive height h;

6), intersecting pipe node location-plate is installed: according to b, c 2 plane coordinatess and a point plane coordinates, go out location-plate control line and localized cross-sectional minimum point projection mark in the measuring of bracing frame end face; Overlapped with control line on location-plate base, circular arc axis of symmetry aligns with minimum point projection mark, and location-plate adjustment is vertical, is welded and fixed;

7), according to control branch's localized cross-sectional low spot and mouth of pipe axial distance, marking of control branch localized cross-sectional outline; Intersecting pipe node is lifted on locating support, adjust each control branch localized cross-sectional outer contour all tangent with corresponding location-plate circular arc minimum point time, i.e. installation in position.

The present invention further improves and is: in step 1), and the figure centre of form that each control branch mouth of pipe line of centres is formed is near intersecting pipe node center of gravity line.

The present invention further improves and is: in step 5), arranges lateral diagonal between support frame as described above.

The present invention further improves and is: in step 5), bracing frame 20 end face and plane-parallel.

The present invention further improves and is:

Relative to prior art, the invention has the beneficial effects as follows: first the present invention selects conveniently to control the branch of intersecting pipe node, determine the position of each branch location circular arc (location-plate), require that setting circle cambered surface is vertical with this branch's axis horizontal projection.Determine the principle of a plane according to not collinear three points, the quantity controlling branch is no less than three.Then use CAD mapping software, under this engineering construction coordinate system, analytical calculation controls the localized cross-sectional profile (ellipse) of branch and relevant particular point coordinate, makes localized cross-sectional profile (location-plate) in the ratio of 1:1.According to correlated characteristic point coordinates, use total powerstation measuring respectively to control the horizontal projection of branch's axis, install and reinforce H profile steel bracing frame.Measuring location-plate control line, installs and reinforces location-plate.When intersecting pipe node is installed, carry out the elevation coarse adjustment controlling branch on ground, the direct installation in position of rear cast steel node.As can be seen from foregoing invention technical scheme, the weight of positioning supporting frame is smaller, can adopt artificial installation, not take large scale hoisting machinery; The direct installation in position of node, repeatedly need not locate adjustment, the set-up time is short, and efficiency of construction improves greatly.If regular truss adopts the constructure scheme of installation on ground, the advantage that the method efficiency of construction is high is more outstanding.Owing to adopting CAD software to carry out analytical calculation, total powerstation carries out Survey control, and the positioning precision of intersecting pipe node is apparently higher than conventional method.

[accompanying drawing explanation]

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is localized cross-sectional schematic diagram, and wherein a point represents localized cross-sectional minimum point, and b, c point represents any two points on the horizontal projection line of cross section.

Fig. 2 is location-plate schematic diagram, and h represents circular arc minimum point and base spacing.

Fig. 3 is support installing schematic diagram.

Fig. 4 is location-plate scheme of installation.

Fig. 5 is node schematic diagram in place.

[detailed description of the invention]

Below in conjunction with accompanying drawing, the present invention is described in further detail:

Refer to shown in Fig. 1 to Fig. 5, a kind of intersecting pipe node of the present invention space-location method, comprises the following steps:

1, the control branch 1 of observing and controlling intersecting pipe node 100 is determined: for ensureing intersecting pipe node 100 accurately location and the stability after installing, the quantity controlling branch 1 is no less than three.Control branch 1 and comprise following two selection principles: 1. select supervisor; 2. the figure that intersecting pipe node 100 center of gravity line is formed through each control branch 1 mouth of pipe line of centres will at least be ensured.Principle 2. in preferably, respectively control the figure centre of form that branch 1 mouth of pipe line of centres formed a kind of situation near intersecting pipe node 100 center of gravity line.

2, the position controlling branch's 1 time location circular arc (location-plate 10) is determined: install for convenience of location-plate 10, require that location-plate 10 projects vertical with corresponding branch 1 axis horizontal that controls.Separately require that the axial distance of location-plate 10 and control branch 1 mouth of pipe should control between 50 ~ 100mm, to ensure the welding job not affecting follow-up intersecting pipe node 100 and connecting rod.

3, use CAD mapping software, intersecting pipe node 100 threedimensional model is analyzed: set up user coordinate system, make user coordinate system and this engineering construction coordinate system consistent.Under this coordinate system, analysis and consult relevant data can directly apply to engineering survey, without the need to calculating conversion.The control branch 1 determined in 1,2 steps and location-plate 10 Position input computer, analytical calculation exports localized cross-sectional 11 profile (oval or circular), the plane coordinates (X, Y) of any two points b, c on localized cross-sectional 11 minimum point a coordinate (X, Y, Z), localized cross-sectional 11 horizontal projection line that control branch 1.See Fig. 1.

4, intersecting pipe node 100 location-plate 10 is made: according to localized cross-sectional 11 profile, steel plate is used to make location-plate 10 in 1:1 ratio, location-plate 10 circular arc angle controls between 120 ° ~ 180 °, and mark circular arc axis of symmetry 101, require that location-plate 10 arc surface is smooth, bottom surface is vertical with circular arc axis of symmetry 101.See Fig. 2.

5, intersecting pipe node 100 bracing frame 20 is installed: according to in-site measurement Controling network, intersecting pipe node 100 branch axis joint coordinate, localized cross-sectional 11 minimum point a coordinate, utilize total powerstation measuring to go out to control branch 1 axis horizontal projection line, then bracing frame 20 is installed.The end face absolute altitude of bracing frame 20 is the Z coordinate value of localized cross-sectional 11 minimum point a and the difference of location-plate 10 minimum constructive height h.Bracing frame 20 welding should be firm, when intersecting pipe node 100 weight is larger, can arrange lateral diagonal between bracing frame 20, ensures the stability of bracing frame 20.Bracing frame 20 end face requires level, must not tilt.See Fig. 3.

6, intersecting pipe node 100 location-plate 10 is installed: according to b, c 2 plane coordinatess (X, Y) and a point plane coordinates (X, Y), go out location-plate 10 control line and localized cross-sectional 11 minimum point projection mark in the measuring of bracing frame 20 end face.Overlapped with control line on location-plate 10 base, circular arc axis of symmetry 101 and label alignment, location-plate 10 adjusts vertically, is welded and fixed.See Fig. 4.

7, according to control branch 1 localized cross-sectional 11 minimum point and mouth of pipe axial distance, marking of control branch 1 localized cross-sectional 11 outline (with branch's axes normal).Before intersecting pipe node 100 installation in position, crane gear is utilized to carry out controlling the elevation coarse adjustment of branch 1 on the ground.After intersecting pipe node 100 is hung ground about 100mm, then according to each control branch 1 mouth of pipe peak relative relief, adjust each branch mouth of pipe to corresponding height, coarse adjustment is carried out to intersecting pipe node 100 location.Finally intersecting pipe node 100 is lifted on locating support, adjust each control branch 1 localized cross-sectional 11 outer contour all tangent with corresponding location-plate 10 circular arc minimum point time, i.e. installation in position.See Fig. 5.

Claims (4)

1. an intersecting pipe node space-location method, is characterized in that, comprises the following steps:
1) the control branch (1) of observing and controlling intersecting pipe node (100), is determined: the quantity controlling branch (1) is no less than three; Control branch (1) and comprise following two selection principles: 1. select supervisor; 2. the figure that intersecting pipe node (100) center of gravity line is formed through each control branch (1) mouth of pipe line of centres will at least be ensured;
2) position of circular arc is located under, determining to control branch (1): require that location-plate (10) projects vertical with corresponding branch (1) axis horizontal that controls; Location-plate (10) is 50 ~ 100mm with the corresponding axial distance controlling branch (1) mouth of pipe;
3), use CAD mapping software, intersecting pipe node (100) threedimensional model is analyzed: set up user coordinate system, make user coordinate system and this engineering construction coordinate system consistent; Step 1), 2) in the control branch (1) that determines and location-plate (10) Position input computer, analytical calculation exports localized cross-sectional (11) profile, localized cross-sectional (11) minimum point a three-dimensional coordinate, the plane coordinates of any two points b, c on localized cross-sectional (11) horizontal projection line that control branch (1);
4), intersecting pipe node (100) location-plate (10) is made: according to localized cross-sectional (11) profile, steel plate is used to make location-plate (10) in 1:1 ratio, location-plate (10) circular arc angle controls between 120 ° ~ 180 °, and marking circular arc axis of symmetry (101), the bottom surface of location-plate (10) is vertical with circular arc axis of symmetry (101);
5), intersecting pipe node (100) bracing frame (20) is installed: according to in-site measurement Controling network, intersecting pipe node (100) branch axis joint coordinate, localized cross-sectional (11) minimum point a coordinate, utilize total powerstation measuring to go out to control branch (1) axis horizontal projection line, then bracing frame (20) is installed; The end face absolute altitude of bracing frame (20) is the vertical coordinate value of localized cross-sectional (11) minimum point a and the difference of location-plate (10) minimum constructive height h;
6), intersecting pipe node (100) location-plate (10) is installed: according to b, c 2 plane coordinatess and a point plane coordinates, go out location-plate (10) control line and localized cross-sectional (11) minimum point projection mark in bracing frame (20) end face measuring; Overlapped with control line on location-plate (10) base, circular arc axis of symmetry (101) aligns with minimum point projection mark, and location-plate (10) adjustment is vertical, is welded and fixed;
7), according to control branch (1) localized cross-sectional (11) minimum point and mouth of pipe axial distance, marking of control branch (1) localized cross-sectional (11) outline; Intersecting pipe node (100) is lifted on locating support, adjust each control branch (1) localized cross-sectional (11) outer contour, time all tangent to itself and corresponding location-plate (10) circular arc minimum point, i.e. installation in position.
2. a kind of intersecting pipe node space-location method according to claim 1, it is characterized in that, step 1) in, respectively control the figure centre of form of branch (1) mouth of pipe line of centres formation near intersecting pipe node (100) center of gravity line.
3. a kind of intersecting pipe node space-location method according to claim 1, is characterized in that, step 5) in, support frame as described above arranges lateral diagonal between (20).
4. a kind of intersecting pipe node space-location method according to claim 1, is characterized in that, step 5) in, bracing frame (20) end face and plane-parallel.
CN201310047290.0A 2013-02-06 2013-02-06 Cast steel penetration pipe node space positioning method CN103114732B (en)

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CN103353286B (en) * 2013-07-03 2016-01-13 中国海洋石油总公司 The detection method of the node coordinate that two cylindrical rod intersect
CN103389081B (en) * 2013-07-18 2015-07-01 中国二十二冶集团有限公司 Method for positioning intersecting mouth space of pipe truss secondary rod
CN103530497B (en) * 2013-08-19 2016-09-28 浙江八达建设集团有限公司 Complex space node assembly method
CN103669863B (en) * 2013-12-12 2016-03-02 上海通用金属结构工程有限公司 Multi-pipe tubular joint manufacturing process
CN104084757B (en) * 2014-06-26 2017-07-11 宁夏共享装备有限公司 Steel truss manufacture craft
CN104763049B (en) * 2015-02-11 2017-02-01 中建钢构江苏有限公司 Multi-weld-joint crossed steel member and fabrication method thereof
CN106363280B (en) * 2015-07-22 2018-12-04 中国二冶集团有限公司 A kind of production method of tower mount node
CN106840116B (en) * 2016-07-29 2019-05-31 上海市建筑装饰工程集团有限公司 Three-dimensional lofting method
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