CN103046767A - 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 PDF

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Publication number
CN103046767A
CN103046767A CN2012105567122A CN201210556712A CN103046767A CN 103046767 A CN103046767 A CN 103046767A CN 2012105567122 A CN2012105567122 A CN 2012105567122A CN 201210556712 A CN201210556712 A CN 201210556712A CN 103046767 A CN103046767 A CN 103046767A
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China
Prior art keywords
jacking
plc
step
jack
calculates
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CN2012105567122A
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Chinese (zh)
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CN103046767B (en
Inventor
应小林
苏孝敏
许华
雷涛
应江龙
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浙江省第一水电建设集团股份有限公司
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Publication of CN103046767A publication Critical patent/CN103046767A/en
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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

PLC calculates trough body dual control synchronization of jacking up construction processed

 

Technical field

The present invention is applicable to the jacking of groove body, and specifically a kind of PLC calculates trough body dual control synchronization of jacking up construction processed.

Background technology

The jacking of groove body is key and the core of this Scheme of Strengthening.Because groove body deflection little (the theoretical only 1mm of maximum that calculates), and the stressed difference of each bearing require in the situation of accurate control end reaction (being top lift) displacement of strict control flume body.Present high-precision jack and synchronous control system can only carry out the Synchronization Control of single index, and the displacement accuracy far can not satisfy the precision control requirement of this groove body all about ± 5mm.Though meet the demands by dial gauge observation displacement accuracy, data can not be synchronous with control, very easily causes 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 dual control synchronization of jacking up construction processed, can accurately control the lifting speed of jack, realizes the control of 4 synchronization liftings, functions such as satisfying synchronization of jacking up, land synchronously, heavy duty is weighed.

The present invention is achieved by the following technical solutions: a kind of PLC calculates trough body dual control synchronization of jacking up construction processed, and step is that ⑴ measures setting-out; ⑵ bearing precompressed; ⑶ jack is in place; ⑷ the jacking of plc computer synchronous jacking system; ⑸ lock jack; ⑹ quick concrete is built; ⑺ etc. remove by force jack top etc.

As improvement, among the step ⑵, bearing is pressed in the previous day that step ⑷ implements in advance.

As improvement, among the step ⑵, bury settlement observation point underground at the groove body top at bearing position, and obtain the displacement initial value.

As preferably, among the step ⑶, installation position displacement sensor and pressure sensor, and carry out oil pipe and be connected with holding wire.

As preferably, among the step ⑷, before formal jacking, to carry out the groove body and fit and displacement zero setting.

As preferably, among the step ⑹, jacking finishes, and imbeds stressometer when building concrete, in order to measure at any time the Bearing Seat Force situation in the final-period management.

As preferably, among the step ⑹, after the jacking end, again by survey crew the pre-buried settlement observation point in groove body top is measured, and contrasted the deformation of analysis vat body with initial value.

The present invention has adopted above-mentioned measure to improve, beneficial effect is remarkable: adopt the frequency control closed-loop control system in this engineering method, rely on the frequency of regulating power supply, change motor speed, reach the continuously adjustable purpose of the flow that makes oil pump, be equipped with again advanced electric control gear and high-precision displacement, pressure detecting system, just can accurately control the lifting speed of jack, realize the control of 4 synchronization liftings, the function such as satisfy that synchronization of jacking up, synchronously landing, heavy duty are weighed.

Description of drawings

Fig. 1 is process chart of the present invention.

The specific embodiment

The present invention is further illustrated in conjunction with the embodiments for the below's contrast accompanying drawing:

With reference to shown in Figure 1, a kind of PLC calculates trough body dual control synchronization of jacking up construction processed among the embodiment 1, and step is that ⑴ measures setting-out: analyze the stress point of bearing, determine the jack placement location.

⑵ bearing precompressed: in jacking the previous day, by the requirement of design drawing relative position bearing and bearing steel plate are placed on the steelframe, jack is placed the position of determining among the step ⑴, carry out pretension by the jack pair bearing, pretension is to design strength, and is with the 4M22*160 high-strength bolt that bearing steel plate and bearing is whole fixing, removes jack again, remove the bearing pretension body (the about 180kg of this pretension body weight) after fixing, carry out the pretension of next piece bearing.During jack pretension bearing, carry out pretension by the pressure sensor that is installed in the jack top with pressure control.And settlement observation point is buried at the groove body top at each bearing position underground, obtains its displacement initial value.

⑶ be installed in displacement transducer first near the concrete wall of the groove body bottom the bearing, in order to can directly reflect the real displacement situation of groove body, pressure passes installation of sensors on the top of jack, in order to can accurately reflect the situation of change of top lift when jacking.Then for guaranteeing the safety during the jacking, before the jack installation in position, carry out the normal complete situation that comprises each equipment and tube connector, line that checks of example, guarantee that equipment is not operating only haltingly.Namely press the oil circuit design scheme with oil pipe exact connect ion oil pump, valve body and jack, the holding wire of displacement and pressure sensor will with the computer exact connect ion, to carry out the manual testing after the connection, normal to guarantee the signal transmission, at last that jack is in place.

⑷ before formal jacking, will carry out first the groove body fits and displacement zero setting, method is: the oil pressure by 5MPa arranges displacement zero setting point, push up in advance by the top lift under the oil pressure of 5MPa (being laminate pressure) first, after carrying out the zero setting button, No. 4 jack begin jacking, after the real load in the picture reaches the setting value of zero setting tonnage, jack stops jacking automatically, and simultaneity factor with the displacement zero clearing of servo jack, is the benchmark zero point of synchronization of jacking up this moment automatically.Be that zero setting finishes.Pre-top is for displacement monitoring, also is in order to make the interface close contacts such as bearing steel plate and bottom land concrete, jack and stake platform concrete, to reduce displacement error, avoiding simultaneously the generation of jacking security incident.

After zero setting finishes, set first jacking speed 0.1mm/min or 5t/min jacking (concrete jacking speed is decided on groove body operating mode), when the displacement of any jack or top lift reach setting value, synchronous control system will send instruction automatically, the jacking fuel feeding of this jack of autoshutdown, this hydraulic jack stop motion.Jacking has just been finished.

⑸ jacking finishes, the locking jack.

⑹ jacking finishes, and treats the jack locking, namely carries out quick concrete and builds, and imbeds simultaneously stressometer, in order to measure at any time the Bearing Seat Force situation in the final-period management.In addition, again by survey crew the pre-buried settlement observation point in groove body top is measured, and contrasted with initial value, the deformation of analysis vat body, the convenient reason of analyzing is carried out later jacking.

⑺ etc. remove by force jack top etc.

What more than enumerate only is 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 or associate from content disclosed by the invention all should belong to protection scope of the present invention.

Claims (7)

1. a PLC calculates trough body dual control synchronization of jacking up construction processed, it is characterized in that, step is that ⑴ measures setting-out; ⑵ bearing precompressed; ⑶ jack is in place; ⑷ the jacking of plc computer synchronous jacking system; ⑸ lock jack; ⑹ quick concrete is built; ⑺ etc. remove by force jack top etc.
2. PLC according to claim 1 calculates trough body dual control synchronization of jacking up construction processed, it is characterized in that, among the step ⑵, bearing is pressed in the previous day that step ⑷ implements in advance.
3. PLC according to claim 1 calculates trough body dual control synchronization of jacking up construction processed, it is characterized in that, among the step ⑵, buries settlement observation point underground at the groove body top at bearing position, and obtains the displacement initial value.
4. PLC according to claim 1 calculates trough body dual control synchronization of jacking up construction processed, it is characterized in that, and among the step ⑶, installation position displacement sensor and pressure sensor, and carry out oil pipe and be connected with holding wire.
5. PLC according to claim 1 calculates trough body dual control synchronization of jacking up construction processed, it is characterized in that, among the step ⑷, will carry out the groove body and fit and displacement zero setting before formal jacking.
6. PLC according to claim 1 calculates trough body dual control synchronization of jacking up construction processed, it is characterized in that, among the step ⑹, jacking finishes, and imbeds stressometer when building concrete, in order to measure at any time the Bearing Seat Force situation in the final-period management.
According to claim 1 or 6 described PLC calculate trough body dual controls synchronization of jacking up construction processed, it is characterized in that, among the step ⑹, again by survey crew the pre-buried settlement observation point in groove body top is measured, and with initial value contrast, the deformation of analysis vat body.
CN201210556712.2A 2012-12-20 2012-12-20 Dual-control synchronous jacking construction method of PLC (Programmable Logic Controller) computer slot body CN103046767B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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
CN106151123A (en) * 2016-08-01 2016-11-23 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

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* Cited by examiner, † Cited by third party
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US20090026430A1 (en) * 2007-07-27 2009-01-29 Simplified Lifting Systems, Llc Lifting and cribbing systems
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090026430A1 (en) * 2007-07-27 2009-01-29 Simplified Lifting Systems, Llc Lifting and cribbing systems
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

Cited By (5)

* Cited by examiner, † Cited by third party
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
CN106151123A (en) * 2016-08-01 2016-11-23 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
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

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