CN107907080B - Measuring method of hanging type space special-shaped grid wall frame - Google Patents
Measuring method of hanging type space special-shaped grid wall frame Download PDFInfo
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- CN107907080B CN107907080B CN201710863967.6A CN201710863967A CN107907080B CN 107907080 B CN107907080 B CN 107907080B CN 201710863967 A CN201710863967 A CN 201710863967A CN 107907080 B CN107907080 B CN 107907080B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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Abstract
A measurement method of a hanging space special-shaped grid wall frame reasonably plans and selects measurement observation points on the premise of ensuring accurate installation; solving the measurement and discharge elements by adopting a space coordinate conversion method and a solution of a space linear equation set; in the field measurement process, a three-dimensional coordinate normalization method is adopted to quickly obtain the position deviation value of the transition point and the design point; fine tuning is carried out for multiple times until the accurate positioning is realized. The installation precision and the installation operation efficiency of the hanging type space special-shaped grid wall frame can be effectively improved, the operation is convenient, and the construction difficulty is low.
Description
Technical Field
The invention belongs to the technical field of engineering measurement, and relates to a method for measuring a hanging type space special-shaped grid wall frame.
Background
The appearance of the stadium building is realized by a grid wall frame structure. At present, temporary positioning points (lines) are often arranged according to the spatial posture of the special-shaped wall frame during the installation of the hanging special-shaped grid wall frame. According to the temporary positioning point (line), the steel wire is pulled to be used as a positioning reference for mounting the special-shaped wall frame. The method is only dependent on the steel wire to position, the installation precision is difficult to guarantee, and the steel wire needs to be specially protected in the installation process of the wall frame to prevent the steel wire from deviating, and the operation efficiency is seriously influenced.
Disclosure of Invention
The invention aims to provide a measuring method of a hanging type space special-shaped grid wall frame, which can effectively improve the installation precision and the installation operation efficiency of the hanging type space special-shaped grid wall frame through accurate positioning measurement, and has convenient operation and low construction difficulty.
As conceived above, the technical scheme of the invention is as follows: a measurement method of a hanging type space special-shaped grid wall frame is characterized by comprising the following steps: the method comprises the following steps:
① selecting positioning observation points;
②, determining the space attitude parameters of the space special-shaped wall frame according to the design positioning points;
③ determining the coordinate value of the top positioning observation point of the wall frame by using a coordinate transformation mathematical model;
④ determining the coordinate value of the lower end positioning observation point of the wall frame by using a solution of a space linear equation set;
⑤, rapidly solving the deviation value of the positions of the transition point and the design positioning point by adopting a three-dimensional coordinate normalization method, and performing normalization debugging on the position of the wall frame according to the deviation;
⑥ are fine-tuned a number of times until precisely normalized to the design position.
When the positioning observation point is selected in the step ①, the positioning observation point at the top end of the wall frame should be arranged at the crisscross point of the center line of the topmost rod piece, and the reflection patch for measurement is attached to the crisscross point of the center line of the outer skin.
When the positioning observation point is selected in the step ①, the positioning observation point at the lower end of the wall frame should be located at the central point of the root of the wall frame.
On the premise of ensuring accurate installation, measurement observation points are reasonably planned and selected; solving the measurement and discharge elements by adopting a space coordinate conversion method and a solution of a space linear equation set; in the field measurement process, a three-dimensional coordinate normalization method is adopted to quickly obtain the position deviation value of the transition point and the design positioning point; fine tuning is carried out for multiple times until the accurate positioning is realized. The installation precision and the installation operation efficiency of the hanging type space special-shaped grid wall frame can be effectively improved, the operation is convenient, and the construction difficulty is low.
Drawings
FIG. 1 is a schematic view of locating observation point locations;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a schematic diagram of three-dimensional coordinate normalization.
In the figure, 1 is a space special-shaped grid wall frame, 2 is a positioning observation point, 3 is a transition point, and 4 is a design positioning point.
Detailed Description
A measurement method of a hanging type space special-shaped grid wall frame comprises the following steps:
1. selecting a positioning observation point
As shown in fig. 1, the position selection of the measurement positioning observation point (2) of the space special-shaped grid wall frame (1) follows the following principle:
① the positioning observation points should be selected based on the given design positioning points;
② the observation point is convenient for measurement and meets the installation accuracy requirement of the wall frame unit;
③ the top positioning observation point of the wall frame should be arranged at the crisscross point of the central line of the top rod piece, and the reflection patch for measurement is pasted at the crisscross point, the position has higher rigidity, smaller deformation and closer distance to the top node, and the measurement precision can be ensured;
④ the observation point for the lower end of the wall frame should be arranged at the central point of the root of the wall frame, which is convenient for the line laying measurement and ensures the measurement precision.
2. Determining space attitude parameters of a space special-shaped wall frame (1) based on design positioning points: inclination, azimuth, alignment, etc.;
3. determining a coordinate transformation mathematical model, and solving the coordinate value of the observation point (2);
before the construction and measurement of the control point at the top end of the wall frame, the coordinates of the designed positioning point are converted into the coordinates of the rod piece outer skin to carry out measurement operation. For the suspension type special-shaped grid wall frame, the spatial modeling is complex, and the coordinates of the measurement observation point are obtained by performing coordinate conversion for many times. And calculating in batches by using Excel tables to obtain the coordinates of the positioning observation points, and comparing and rechecking the coordinates with the data acquired by the model.
4. Solution method of space linear equation set
The foot falling point of the root part of the suspension type special-shaped grid wall frame unit is usually positioned on the inclined truss, the sheet truss and the lower edge sealing beam, the root part position is measured and paid off, and the foot falling point position is obtained by applying a space linear equation set in the same plane for combined solution.
①, determining a space straight line equation 1 by coordinates of two design positioning points of the lower limb and the leg of the upper wall frame:
② determining a straight line equation 2 according to the space trend of the lower inclined truss, the plate truss and the lower edge sealing beam:
③ simultaneous equations 1 and 2 are solved and determined to obtain space intersection point coordinate values (x, y, z), and then the coordinate of the footing point at the root of the wall frame is obtained;
④ Excel table batch calculation, and obtaining the coordinates of the rest root foot-falling points.
5. Space three-dimensional coordinate regression method
And inversely calculating lofting elements according to the coordinates of the actually measured transition points (3) and the design positioning points (4). The method comprises the steps of erecting an instrument on a known point, accurately measuring the coordinate of a transition point by using a total station, calculating the correction number from the transition point to a design positioning point according to the accurate coordinate of the transition point and the coordinate of a design positioning point, and finally accurately classifying the transition point to a design position from the transition point according to the correction number.
Claims (3)
1. A measurement method of a hanging type space special-shaped grid wall frame is characterized by comprising the following steps: the method comprises the following steps:
① selecting positioning observation points;
②, determining the space attitude parameters of the space special-shaped wall frame according to the design positioning points;
③ determining the coordinate value of the top positioning observation point of the wall frame by using a coordinate transformation mathematical model;
④ determining the coordinate value of the lower end positioning observation point of the wall frame by using a solution of a space linear equation set;
⑤, rapidly solving the deviation value of the positions of the transition point and the design positioning point by adopting a three-dimensional coordinate normalization method, and performing normalization debugging on the position of the wall frame according to the deviation;
⑥ are fine-tuned a number of times until precisely normalized to the design position.
2. The method as claimed in claim 1, wherein the step ① is performed by selecting a top positioning observation point, the top positioning observation point is arranged at the center line cross point of the topmost rod, and a reflection patch for measurement is attached to the outer skin center line cross point.
3. The method as claimed in claim 1, wherein the positioning observation point is set at the center of the bottom of the wall frame when the positioning observation point is selected in step ①.
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| CN201710863967.6A CN107907080B (en) | 2017-09-22 | 2017-09-22 | Measuring method of hanging type space special-shaped grid wall frame |
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| CN201710863967.6A CN107907080B (en) | 2017-09-22 | 2017-09-22 | Measuring method of hanging type space special-shaped grid wall frame |
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| CN107907080B true CN107907080B (en) | 2020-05-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196247A (en) * | 2014-08-27 | 2014-12-10 | 浙江精工钢结构集团有限公司 | Special-shaped spatial network structure node control installation method |
| CN204346367U (en) * | 2015-01-06 | 2015-05-20 | 中建三局集团有限公司 | Profile iron bow member node measurement conversion equipment |
| CN106844960A (en) * | 2017-01-20 | 2017-06-13 | 中冶建筑研究总院有限公司 | A kind of method of the reverse modeling of tubular weldment steel structure net rack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010151757A (en) * | 2008-12-26 | 2010-07-08 | Taisei Corp | Survey method using total station |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196247A (en) * | 2014-08-27 | 2014-12-10 | 浙江精工钢结构集团有限公司 | Special-shaped spatial network structure node control installation method |
| CN204346367U (en) * | 2015-01-06 | 2015-05-20 | 中建三局集团有限公司 | Profile iron bow member node measurement conversion equipment |
| CN106844960A (en) * | 2017-01-20 | 2017-06-13 | 中冶建筑研究总院有限公司 | A kind of method of the reverse modeling of tubular weldment steel structure net rack |
Non-Patent Citations (1)
| Title |
|---|
| 归化法定线最佳测设方案研究;徐鹏;《工程地球物理学报》;20040430;第1卷(第2期);166-168 * |
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