CN103046767B - Dual-control synchronous jacking construction method of PLC (Programmable Logic Controller) computer slot body - Google Patents
Dual-control synchronous jacking construction method of PLC (Programmable Logic Controller) computer slot body Download PDFInfo
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- CN103046767B CN103046767B CN201210556712.2A CN201210556712A CN103046767B CN 103046767 B CN103046767 B CN 103046767B CN 201210556712 A CN201210556712 A CN 201210556712A CN 103046767 B CN103046767 B CN 103046767B
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Abstract
The invention is suitable for slot body jacking, and particularly relates to a dual-control synchronous jacking construction method of a PLC (Programmable Logic Controller) computer slot body. The method comprises the following steps: (1) surveying lofting; (2) support base prepressing; (3) lifting jack on-station; (4), PLC computer synchronous jacking system jacking; (5) lifting jack locking; (6) quick concrete casting; (7) lifting jack equal-strength removal; and the like. According to the method, the lifting speed of the lifting jack can be accurately controlled, the control of four-point synchronous lifting is realized, and the functions of synchronous lifting, synchronous descending, heavy load weighing and the like are satisfied.
Description
Technical field
The present invention is applicable to the jacking of groove body, and specifically a kind of PLC calculates trough body double control synchronization of jacking up construction.
Background technology
The jacking of groove body is key and the core of this Scheme of Strengthening.Due to groove body deflection little (the maximum only 1mm of theory calculate), and the stressed difference of each bearing, require when accurately controlling end reaction (i.e. top lift), the displacement of strict control flume body.Current high-precision jack and synchronous control system can only carry out the Synchronization Control of single index, and displacement accuracy is all at ± about 5mm, far can not meet the precision controlling requirement of this groove body.Though by dial gauge observation displacement accuracy meet the demands, data can not with control synchronization, very easily cause the failure of jacking.
Summary of the invention
For the problems referred to above, the present invention discloses a kind of PLC and calculates trough body double control synchronization of jacking up construction, accurately can control the lifting speed of jack, realize the control of 4 synchronization liftings, functions such as meeting synchronization of jacking up, synchronously land, heavy duty is weighed.
The present invention is achieved by the following technical solutions: a kind of PLC calculates trough body double control synchronization of jacking up construction, and step is (1) surveying and locating; (2) bearing precompressed; (3) jack is in place; (4) plc computer synchronous jacking system jacking; (5) lock jack; (6) quick concrete placings; (7) wait and remove by force jack top etc.
As improvement, step (2) in, bearing is pressed in the previous day that (4) step is implemented in advance.
As improvement, step (2) in, bury settlement observation point underground at the groove body top at bearing position, and obtain displacement initial value.
As preferably, step (3) in, installation position displacement sensor and pressure sensor, and carry out oil pipe and be connected with holding wire.
As preferably, step (4) in, the laminating of groove body and displacement zero setting will be carried out before formal jacking.
As preferably, step (6) in, jacking terminates, and imbeds stressometer when building concrete, to measure Bearing Seat Force situation at any time in final-period management.
As preferably, step (6) in, after jacking terminates, again measured by the settlement observation point that survey crew is pre-buried to groove body top, and contrast with initial value, the deformation of analysis vat body.
Present invention employs above-mentioned measure to improve, beneficial effect is remarkable: adopt frequency control closed-loop control system in this engineering method, rely on the frequency regulating power supply, change motor speed, reach and make the continuously adjustable object of the flow of oil pump, then be equipped with advanced electric control gear and high-precision displacement, pressure detecting system, just accurately can control the lifting speed of jack, realize the control of 4 synchronization liftings, functions such as meeting synchronization of jacking up, synchronously land, heavy duty is weighed.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
The present invention is further illustrated in conjunction with the embodiments to contrast accompanying drawing below:
With reference to shown in Fig. 1, in embodiment 1, a kind of PLC calculates trough body double control synchronization of jacking up construction, and step be (1) surveying and locating: the stress point of analysis bearing, determines jack placement location.
(2) bearing precompressed: in jacking the previous day, by the requirement of design drawing relative position, bearing and bearing steel plate are placed on steelframe, jack place step (1) in the position determined, pretension is carried out by jack pair bearing, after pretension to design strength, with 4M22*160 high-strength bolt, bearing steel plate and bearing entirety are fixed, then remove jack, remove the bearing pretension body (this pretension body weight is about 180kg) after fixing, carry out the pretension of next block bearing.During jack pretension bearing, carry out pretension by the pressure sensor being arranged on jack top with Stress control.And bury settlement observation point underground at the groove body top at each bearing position, obtain its displacement initial value.
(3) be first arranged on by displacement transducer on the concrete wall bottom the groove body near bearing, directly can reflect the real misalignment of groove body, pressure passes the top that sensor is arranged on jack, accurately can reflect the situation of change of top lift when jacking.Then be the safety during guaranteeing jacking, before jack installation in position, carry out that example is normal checks the complete situation comprising each equipment and tube connector, line, guarantee that equipment is not operating only haltingly.Namely press oil circuit design scheme by oil pipe exact connect ion oil pump, valve body and jack, the holding wire of displacement and pressure sensor will with computer exact connect ion, to manual testing be carried out after connection, to guarantee that signal transmission is normal, finally that jack is in place.
(4) before formal jacking, first will carry out the laminating of groove body and displacement zero setting, method is: arrange displacement zero setting point by the oil pressure of 5MPa, first push up in advance by the top lift (i.e. laminate pressure) under the oil pressure of 5MPa, when after execution zero setting button, No. 4 jack start jacking, after the real load in picture reaches the setting value of zero setting tonnage, jack stops jacking automatically, and the displacement of servo jack resets by simultaneity factor automatically, is now the benchmark zero point of synchronization of jacking up.Namely zero setting terminates.Pre-top is in order to displacement monitoring, is also to make the interface close contact such as bearing steel plate and bottom land concrete, jack and stake platform concrete, reduces displacement error, avoids the generation of jacking security incident simultaneously.
After zero setting terminates, first set jacking speed 0.1mm/min or 5t/min jacking (concrete jacking speed is depending on groove body operating mode), when the displacement of any jack or top lift reach setting value, synchronous control system will send instruction automatically, automatically the jacking fuel feeding of this jack is closed, this hydraulic jack stop motion.Jacking just completes.
(5) jacking terminates, locking jack.
(6) jacking terminates, and treats that jack locks, and namely carries out quick concrete placings, imbeds stressometer simultaneously, to measure Bearing Seat Force situation at any time in final-period management.In addition, again measured by the settlement observation point that survey crew is pre-buried to groove body top, and contrast with initial value, the deformation of analysis vat body, convenient reason of analyzing carries out later jacking.
(7) wait and remove by force jack top etc.
That more than enumerates is only specific embodiments of the invention, obviously, the invention is not restricted to above embodiment.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should belong to protection scope of the present invention.
Claims (1)
1. PLC calculates a trough body double control synchronization of jacking up construction, it is characterized in that step is (1) surveying and locating: the stress point analyzing bearing, determines jack placement location;
(2) bearing precompressed: in jacking the previous day, by the requirement of design drawing relative position, bearing and bearing steel plate are placed on steelframe, jack place step (1) in the position determined, carry out pretension by jack pair bearing, after pretension to design strength, with 4M22*160 high-strength bolt, bearing steel plate and bearing entirety are fixed, remove jack again, remove the bearing pretension body after fixing, this pretension body weight is about 180kg, carries out the pretension of next block bearing; During jack pretension bearing, carry out pretension by the pressure sensor being arranged on jack top with Stress control; And bury settlement observation point underground at the groove body top at each bearing position, obtain its displacement initial value;
(3) be first arranged on by displacement transducer on the concrete wall bottom the groove body near bearing, directly can reflect the real misalignment of groove body, pressure sensor is arranged on the top of jack, accurately can reflect the situation of change of top lift when jacking; Then be the safety during guaranteeing jacking, before jack installation in position, carry out that example is normal checks the complete situation comprising each equipment and tube connector, line, guarantee that equipment is not operating only haltingly; Namely press oil circuit design scheme by oil pipe exact connect ion oil pump, valve body and jack, the holding wire of displacement and pressure sensor will with computer exact connect ion, to manual testing be carried out after connection, to guarantee that signal transmission is normal, finally that jack is in place;
(4) before formal jacking, first carry out the laminating of groove body and displacement zero setting, method is: arrange displacement zero setting point by the oil pressure of 5MPa, first push up in advance by the top lift (i.e. laminate pressure) under the oil pressure of 5MPa, when after execution zero setting button, No. 4 jack start jacking, after the real load in picture reaches the setting value of zero setting tonnage, jack stops jacking automatically, and the displacement of servo jack resets by simultaneity factor automatically, is now the benchmark zero point of synchronization of jacking up; Namely zero setting terminates; Pre-top is in order to displacement monitoring, is also to make bearing steel plate and bottom land concrete, jack and stake platform concrete interface close contact, reduces displacement error, avoids the generation of jacking security incident simultaneously;
After zero setting terminates, first set jacking speed 0.1mm/min or 5t/min jacking, when the displacement of any jack or top lift reach setting value, synchronous control system will send instruction automatically, automatically the jacking fuel feeding of this jack is closed, this hydraulic jack stop motion; Jacking just completes;
(5) jacking terminates, locking jack;
(6) jacking terminates, and treats that jack locks, and namely carries out quick concrete placings, imbeds stressometer simultaneously, to measure Bearing Seat Force situation at any time in final-period management; In addition, again measured by the settlement observation point that survey crew is pre-buried to groove body top, and contrast with initial value, the deformation of analysis vat body, convenient reason of analyzing carries out later jacking;
(7) wait and remove jack by force.
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| CN201210556712.2A CN103046767B (en) | 2012-12-20 | 2012-12-20 | Dual-control synchronous jacking construction method of PLC (Programmable Logic Controller) computer slot body |
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| CN201210556712.2A CN103046767B (en) | 2012-12-20 | 2012-12-20 | Dual-control synchronous jacking construction method of PLC (Programmable Logic Controller) computer slot body |
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| CN103046767B true CN103046767B (en) | 2015-01-21 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777024A (en) * | 2012-08-14 | 2012-11-14 | 俞彬 | Digital and intelligent lifting control device |
| CN105464398A (en) * | 2015-12-23 | 2016-04-06 | 江苏鼎达建筑新技术有限公司 | PLC intelligent synchronous jacking unloading construction device used for reinforcing concrete independent column |
| CN106151123B (en) * | 2016-08-01 | 2017-12-29 | 中国人民解放军海军航空工程学院 | A kind of dual-control loop Hydrauservo System component parameters optimization method |
| CN107724254A (en) * | 2017-08-23 | 2018-02-23 | 北京公联洁达公路养护工程有限公司 | The synchronization of jacking up of construction of bridge T beam changes construction method with making |
| CN114355832A (en) * | 2021-12-27 | 2022-04-15 | 大连华锐重工集团股份有限公司 | Torpedo tank car jacking control system and method based on car lifting jack hydraulic system |
| CN115506588B (en) * | 2022-10-25 | 2024-05-28 | 四川路桥桥梁工程有限责任公司 | Intelligent integrated lifting support |
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| CN201372578Y (en) * | 2008-12-30 | 2009-12-30 | 上海天演建筑物移位工程有限公司 | Internal force and height controllable sliding displacement device |
| CN201605829U (en) * | 2009-12-30 | 2010-10-13 | 上海天演建筑物移位工程有限公司 | Building jacking system |
| CN201915650U (en) * | 2010-09-03 | 2011-08-03 | 上海天演建筑物移位工程有限公司 | Control system for synchronous push |
| CN102704705A (en) * | 2012-06-06 | 2012-10-03 | 河北省建筑科学研究院 | Building long-stroke redescending-free multi-point synchronous jacking method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090026430A1 (en) * | 2007-07-27 | 2009-01-29 | Simplified Lifting Systems, Llc | Lifting and cribbing systems |
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| CN201372578Y (en) * | 2008-12-30 | 2009-12-30 | 上海天演建筑物移位工程有限公司 | Internal force and height controllable sliding displacement device |
| CN201605829U (en) * | 2009-12-30 | 2010-10-13 | 上海天演建筑物移位工程有限公司 | Building jacking system |
| CN201915650U (en) * | 2010-09-03 | 2011-08-03 | 上海天演建筑物移位工程有限公司 | Control system for synchronous push |
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