CN104153589A - Roof steel truss lifting point lifting capacity detecting method - Google Patents
Roof steel truss lifting point lifting capacity detecting method Download PDFInfo
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- CN104153589A CN104153589A CN201410427319.2A CN201410427319A CN104153589A CN 104153589 A CN104153589 A CN 104153589A CN 201410427319 A CN201410427319 A CN 201410427319A CN 104153589 A CN104153589 A CN 104153589A
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- steel truss
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- lifting
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Abstract
The invention discloses a roof steel truss lifting point lifting capacity detecting method. After a roof steel truss is lifted to a certain height, a lifting layer is arranged on the lower portion of the roof steel truss. Detecting of the lifting point capacity is carried out before the lifting layer is arranged. The method comprises the following steps that (1) first-time whole trial lifting is carried out; (2) single-point full-load loading testing is carried out; (3) single-point overload testing is carried out; (4) unloading is carried out; and (5) the step (2), the step (3) and the step (4) are repeatedly carried out on surplus lifting points to be tested. The detecting method is simple and reliable, safety stock can be effectively improved, and the detecting method is suitable for construction of a building in which the lifting layer is arranged below a steel truss roof.
Description
Technical field
The present invention relates to Large Steel trussed roof building, relate in particular to a kind of roof system steel truss suspension centre hoisting power detection method.
Background technology
In adopting the building of Large Steel trussed roof, the multilayer floor below roof system steel truss can adopt a hanging layer structure.Hanging layer structure can be given full play to the carrying effect of roof system steel truss, saves the vertical structure material of inner floor, meets the requirement of building interior large space simultaneously.
Hanging layer is hung on roof system steel truss bottom, comprises the flase floor on hanging beam and hanging beam.Adopt the building of hanging layer when construction, first spelling completes roof system, after roof system is promoted to certain altitude, hanging layer is installed again, although the lifting of roof system is just to implement calculate lifting counter-force by software after, guaranteed to a certain extent the safety of lifting process, but can not determine after hanging layer is installed, whether each node of roof system steel truss and rod member also can guarantee structural safety, especially for some building, the load weight of roof system steel truss and hanging layer is rare, and be irregular structure, once certain suspension centre hoisting power is not enough, to cause catastrophic effect, therefore, before hanging layer is installed, must comprise that each suspension centre hoisting power under the full load situation of hanging layer detects again to roof system steel truss.
Summary of the invention
The object of this invention is to provide a kind of roof system steel truss suspension centre hoisting power detection method.
For achieving the above object, the present invention has adopted following technical scheme:
A roof system steel truss suspension centre hoisting power detection method, described roof system steel truss will be installed in its underpart hanging layer after promoting certain altitude, and the detection of described suspension centre hoisting power is carried out before described hanging layer is installed, and comprises the following steps:
(1) whole examination promotes first
Roof system steel truss is promoted to 200mm, measure the level of each suspension centre, and finely tune to adjust horizontal attitude by lifter, guarantee that each hoisting point position steel truss winds up in same level, determine the absolute altitude that winds up, measure steel truss downwarp value, and monitor the deformation of each suspension centre place steel truss and reinforcement measure, detected value and design load are compared.
(2) single-point loads test at full capacity
The lifter of the first suspension centre to be detected is continued to loading, and the lifter of all the other suspension centres still remains on the state after having promoted for the first time, stops loading when the lifter load application of the first suspension centre to be detected reaches design standard value; Measure the vertical displacement of the first suspension centre to be detected and adjacent suspension centre thereof, and monitor the deformation of the first suspension centre to be detected place truss and reinforcement measure, detected value and design load are compared.
(3) single-point overload test
The first suspension centre to be detected is continued to load, until reach the overload value of reservation, stop loading, measure displacement and the distortion of the first suspension centre to be detected and adjacent suspension centre thereof, and monitor the deformation of the first suspension centre to be detected place truss and reinforcement measure, detected value and design load are compared.
(4) unloading
After loading finishes, stop 5-10 minute, the lifter of the first suspension centre to be detected is unloaded, until hoist load is returned to the load after step (1) has promoted.
(5) all the other suspension centres to be detected are repeated to above-mentioned steps (2)-(4), until all suspension centres to be detected detect complete;
In step (1)-(5) process, if not there is not surpassing displacement or the distortion of design load, it is qualified to detect; If it is defective that appearance, over displacement or the distortion of design load, detects, must carry out consolidation process, and then detect.
For guaranteeing safety, each lifting, can be below each suspension centre after finishing add pading plate as support between steel truss and ground surface platform.
As preferably, lifting process adopts lifter cluster, computer control, and hydraulic synchronizing lifting, and can quantitatively control the load of each hoist point; In hydraulic pressure lift process, should keep a close eye on the duty of hydraulic rockshaft, hydraulic pump source system, computer synchronous control system, sensing and detecting system.
Described predetermined overload value is determined according to the ratio of hanging layer load and roof system steel truss gravity load.
Beneficial effect of the present invention: the present invention is promoted to a certain locking position by roof system steel truss, control other suspension centre state constant, successively the single suspension centre of each suspension centre to be detected is loaded on to fully loaded, overload, because suspension centre is corresponding with the steel truss strong point, the condition responsive of each position of steel truss in observation experiment process, just can infer the condition responsive of steel truss each position after hanging layer is installed, thereby the safety reservation of judgement steel truss hoisting power, simply, effectively, for work progress provides safety guarantee.
Below in conjunction with embodiment, the present invention will be further described.
The specific embodiment
A roof system steel truss suspension centre hoisting power detection method, described roof system steel truss will be installed in its underpart hanging layer after promoting certain altitude, and the detection of described suspension centre hoisting power is carried out before described hanging layer is installed, and comprises the following steps:
(1) whole examination promotes first
Roof system steel truss is promoted to 200mm, measure the level of each suspension centre, and finely tune to adjust horizontal attitude by lifter, guarantee that each hoisting point position steel truss winds up in same level, determine the absolute altitude that winds up, measure steel truss downwarp value, and monitor the deformation of each suspension centre place steel truss and reinforcement measure, detected value and design load are compared.
(2) single-point loads test at full capacity
The lifter of the first suspension centre to be detected is continued to loading, and the lifter of all the other suspension centres still remains on the state after having promoted for the first time, stops loading when the lifter load application of the first suspension centre to be detected reaches design standard value; Measure the vertical displacement of the first suspension centre to be detected and adjacent suspension centre thereof, and monitor the deformation of the first suspension centre to be detected place truss and reinforcement measure, detected value and design load are compared.
(3) single-point overload test
The first suspension centre to be detected is continued to load, until reach 1.3 times of design standard value, stop loading, measure displacement and the distortion of the first suspension centre to be detected and adjacent suspension centre thereof, and monitor the deformation of the first suspension centre to be detected place truss and reinforcement measure, detected value and design load are compared.
(4) unloading
After loading finishes, stop 5-10 minute, the lifter of the first suspension centre to be detected is unloaded, until hoist load is returned to the load after step (1) has promoted.
(5) all the other suspension centres to be detected are repeated to above-mentioned steps (2)-(4), until all suspension centres to be detected detect complete;
In step (1)-(5) process, if not there is not surpassing displacement or the distortion of design load, it is qualified to detect; If it is defective that appearance, over displacement or the distortion of design load, detects, must carry out consolidation process, and then detect.
Each lifting, can be below each suspension centre after finishing add pading plate as support between steel truss and ground surface platform.
Lifting process adopts lifter cluster, computer control, and hydraulic synchronizing lifting, and can quantitatively control the load of each hoist point; In hydraulic pressure lift process, should keep a close eye on the duty of hydraulic rockshaft, hydraulic pump source system, computer synchronous control system, sensing and detecting system.
Claims (4)
1. a roof system steel truss suspension centre hoisting power detection method, is characterized in that, described roof system steel truss will be installed in its underpart hanging layer after promoting certain altitude, and the detection of described suspension centre hoisting power is carried out before described hanging layer is installed, and comprises the following steps:
(1) whole examination promotes first
Roof system steel truss is promoted to 200mm, measure the level of each suspension centre, and finely tune to adjust level by lifter, guarantee that each hoisting point position steel truss winds up in same level, determine the absolute altitude that winds up, measure steel truss downwarp value, and monitor the deformation of each suspension centre place steel truss and reinforcement measure, detected value and design load are compared;
(2) single-point loads test at full capacity
The lifter of the first suspension centre to be detected is continued to loading, and the lifter of all the other suspension centres still remains on the state after having promoted for the first time, stops loading when the lifter load application of the first suspension centre to be detected reaches design standard value; Measure the vertical displacement of the first suspension centre to be detected and adjacent suspension centre thereof, and monitor the deformation of the first suspension centre to be detected place truss and reinforcement measure, detected value and design load are compared;
(3) single-point overload test
The first suspension centre to be detected is continued to load, until reach, subscribe overload value, stop loading, measure displacement and the distortion of the first suspension centre to be detected and adjacent suspension centre thereof, and monitor the deformation of the first suspension centre to be detected place truss and reinforcement measure, detected value and design load are compared;
(4) unloading
After loading finishes, stop 5-10 minute, the lifter of the first suspension centre to be detected is unloaded, until hoist load is returned to the load after step (1) has promoted;
(5) all the other suspension centres to be detected are repeated to above-mentioned steps (2)-(4), until all suspension centres to be detected detect complete;
In step (1)-(5) process, if not there is not surpassing displacement or the distortion of design load, it is qualified to detect; If it is defective that appearance, over displacement or the distortion of design load, detects, must carry out consolidation process, and then detect.
2. roof system steel truss suspension centre hoisting power detection method according to claim 1, is characterized in that below each suspension centre, between steel truss and ground surface platform, adding pading plate as support each lifting after finishing.
3. roof system steel truss suspension centre hoisting power detection method according to claim 1, is characterized in that lifting process adopts lifter cluster, computer control, and hydraulic synchronizing lifting, and can quantitatively control the load of each hoist point; In hydraulic pressure lift process, should keep a close eye on the duty of hydraulic rockshaft, hydraulic pump source system, computer synchronous control system and sensing and detecting system.
4. roof system steel truss suspension centre hoisting power detection method according to claim 1, is characterized in that described predetermined overload value determines according to the ratio of hanging layer load and roof system steel truss gravity load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427319.2A CN104153589B (en) | 2014-08-27 | 2014-08-27 | A kind of roof system steel truss suspension centre hoisting power detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410427319.2A CN104153589B (en) | 2014-08-27 | 2014-08-27 | A kind of roof system steel truss suspension centre hoisting power detection method |
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| CN104153589A true CN104153589A (en) | 2014-11-19 |
| CN104153589B CN104153589B (en) | 2016-04-27 |
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| CN201410427319.2A Expired - Fee Related CN104153589B (en) | 2014-08-27 | 2014-08-27 | A kind of roof system steel truss suspension centre hoisting power detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631839A (en) * | 2015-01-29 | 2015-05-20 | 浙江勤业建工集团有限公司 | Construction method for integrally lifting super-high, super-heavy, large-span space corridor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04111829A (en) * | 1990-08-30 | 1992-04-13 | Shimizu Corp | Method for constructing large-span roof |
| CN102071814A (en) * | 2010-12-16 | 2011-05-25 | 中建二局第三建筑工程有限公司 | High-rise long-span door type truss integral lifting device and construction method thereof |
| CN102505860A (en) * | 2011-10-21 | 2012-06-20 | 温州建设集团有限公司 | Novel Lifting method for irregularly-shaped steel structure member |
| CN102864875A (en) * | 2012-10-11 | 2013-01-09 | 北京筑福建设工程有限责任公司 | A-shaped roof truss steel rod structure system and construction method thereof |
-
2014
- 2014-08-27 CN CN201410427319.2A patent/CN104153589B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04111829A (en) * | 1990-08-30 | 1992-04-13 | Shimizu Corp | Method for constructing large-span roof |
| CN102071814A (en) * | 2010-12-16 | 2011-05-25 | 中建二局第三建筑工程有限公司 | High-rise long-span door type truss integral lifting device and construction method thereof |
| CN102505860A (en) * | 2011-10-21 | 2012-06-20 | 温州建设集团有限公司 | Novel Lifting method for irregularly-shaped steel structure member |
| CN102864875A (en) * | 2012-10-11 | 2013-01-09 | 北京筑福建设工程有限责任公司 | A-shaped roof truss steel rod structure system and construction method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631839A (en) * | 2015-01-29 | 2015-05-20 | 浙江勤业建工集团有限公司 | Construction method for integrally lifting super-high, super-heavy, large-span space corridor |
| CN104631839B (en) * | 2015-01-29 | 2016-08-24 | 浙江勤业建工集团有限公司 | Ultra-high overweight large span aerial vestibule construction method for lifting whole |
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| CN104153589B (en) | 2016-04-27 |
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