CN102425192A - Pile foundation inclination real-time monitoring and prewarning system - Google Patents
Pile foundation inclination real-time monitoring and prewarning system Download PDFInfo
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- CN102425192A CN102425192A CN2011102846158A CN201110284615A CN102425192A CN 102425192 A CN102425192 A CN 102425192A CN 2011102846158 A CN2011102846158 A CN 2011102846158A CN 201110284615 A CN201110284615 A CN 201110284615A CN 102425192 A CN102425192 A CN 102425192A
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Abstract
The invention discloses a system scheme for monitoring pile foundation inclination in real time and providing prewarning. In the scheme, an inclination measurement sensor and a gyroscope sensor (2) are arranged on a pile foundation (1) and driven underground together with the pile foundation as well as led outside through leads (3) and connected to a signal acquirer (4). According to the system, real-time monitoring on the pile foundation inclination can be realized, and an accurate inclination angle and an accurate inclination direction are obtained. The system has two functions of being capable of accurately judging piling quality of the pile foundation in a process of building a building and monitoring safety of the pile foundation in real time in the process of using the building and providing a prewarning signal immediately and sending a monitoring result through wired and wireless modes.
Description
Technical field
The present invention relates to building safety, relate in particular to the piling quality and the actual time safety monitoring of pile foundation.
Background technology
Pile foundation is as a large amount of deep foundation forms that adopt in the engineering construction at present; Relate to the important component part of structural safety; The quality of pile foundation is directly connected to the safety of whole building (structure), also is related to the people's life, property safety, therefore strengthens pile foundation and detects significant.The detection method of current pile foundation quality is mainly following.
1. static load test: by the function of stake; Apply step by step on stake top respectively axial compression, axially uplift force, absolute altitude is consistent in the pile foundation support table bottom surface locates to apply horizontal force; The sedimentation of the respective detection point generation of observation stake, on pull out displacement or horizontal movement, judge the test method of corresponding single pile vertical resistance pressure bearing capacity, single-pile vertical orientation anti-pulling capacity or horizontal bearing capacity of single pile according to the relation of load and displacement.The significant advantage of this method is that stress condition is relatively more approaching actual, is simple and easy to usefulness, and it is that people understand and acceptance that result of the test intuitively is easy to; But experimental scale and expense are relatively large.
2. bore the core detection method: with geological drilling rig core boring sampling along its length on pile body, through a quality of the observation of core and test being confirmed.But this method can only reflect the fraction concrete quality in the boring scope; And equipment huge, time-consuming, cost an arm and a leg, should not be as the large tracts of land detection method, and can only be used for sampling check; 3～5% of the total stake amount of general sampling observation, or as nondestructive testing result's check means.
3. low strain detecting: apply low-energy transient state or stable state exciting at the stake end face, make stake in elastic range, do elastic vibration, and produce the stress wave longitudinal propagation thus, utilize fluctuation and Theory of Vibration that the integrality of pile body is made evaluation simultaneously.This method testing equipment is simply light, and detection speed is fast, cost is low, is the excellent means of pile quality integrality generaI investigation.But low Strain Method can not directly obtain the deduction of bearing capacity on principle, but is calculated by the correction of actual measurement dynamic stiffness and quiet moving contrast, therefore has very big regional experience and human factor.
4. high Strain Method: knock through implementing weight on the stake top, make pile body produce moving displacement, all ground resistances of stake are given full play to.High Strain Method explicit physical meaning, accuracy in detection is higher relatively; But the influence of problems such as present examined personnel's level and Pile Soil interaction model, this method still has bigger limitation, still can not replace static load test fully and the design considerations of the definite vertical allowable load capacity of single pile of conduct.
Shortcomings such as said method exists respectively that monitoring equipment is huge, process is complicated, excessive cycle, costly, diminishes detection, and the examined personnel's experience influence of testing result is bigger, and the fatal shortcoming that has the small scale sampling observation and can not monitor in real time.Present building trade press for develop have real-time monitoring, automatically, comprehensively, the electronic supervisory system of fast monitored carries out comprehensive and accurate safety monitoring to pile foundation.
Summary of the invention
The inclination of pile foundation is the key factor that influences pile foundation quality, especially as far as preformed pile.Its holding capacity of preformed pile that building is selected for use generally greater than the requirement of building, leaves nargin.When pile foundation angle when squeezing into produces, will cause the stressed off-axis of pile foundation to, simultaneously in the building use, the moving pile foundation skew vertical direction that also can make gradually of underground partial water soil mud.Pile foundation tilts will cause its unbalance stress, causes the pile foundation damage easily, therefore need monitor in real time the inclination of pile foundation.
This patent discloses a kind of real-time monitoring pile foundation and has tilted, and the system schema of early warning is provided.In this scheme (see figure 1), deviational survey sensor and gyro sensor (2) are installed on the pile foundation (1) and pile foundation is driven underground together, and draw through lead (3), are connected on the signal picker (4).Can realize real-time monitoring through this system to the pile foundation inclination, and the definite angle and direction that obtains tilting.This system has two big functions, in the architecture construction process, can accurately judge the piling quality of pile foundation; In architectural process, can monitor the safety of pile foundation in real time, early warning signal in time is provided, and monitoring result is sent through wired and wireless mode.
Description of drawings
Fig. 1 is the pile foundation inclination real-time system for monitoring and pre-warning that the present invention describes;
Fig. 2 is a pile foundation inclination sketch map;
The specific embodiment
Combine accompanying drawing that the present invention is done further explain through the specific embodiment below.
This scheme is described below: deviational survey sensor and gyro sensor (2) are installed on the pile foundation (1) and pile foundation is driven underground together, and draw through lead (3), are connected on the signal picker (4).The track and the direction of sensor in real time sensing pile foundation, signal picker then convert the primary signal of sensor to the angle of inclination and the direction of pile foundation, and send out through wired and wireless mode.
In pile foundation shown in Figure 2 tilted signal, the angle of pile foundation off-vertical was θ, and the defence line of departing from is an east by south ψ degree.Can above-mentioned monitoring result be reflected in real time through native system.
Above content is to combine concrete embodiment to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (8)
1. pile foundation inclination real-time system for monitoring and pre-warning; It is characterized in that, go up in pile foundation (1) deviational survey sensor and gyro sensor (2) are installed, and draw through lead (3); Be connected on the signal picker (4), reach the function of real-time monitoring pile foundation angle of inclination and direction.
2. pile foundation inclination real-time system for monitoring and pre-warning as claimed in claim 1 is characterized in that said sensor is acceleration transducer and gyro sensor, but does not limit other can carry out the sensor of inclination measurement and orientation measurement.
3. pile foundation inclination real-time system for monitoring and pre-warning as claimed in claim 1 is characterized in that said sensor is the MEMS sensor, but does not limit other can carry out optical fiber, piezoelectricity, the vibrating wire sensor of inclination measurement and orientation measurement.
4. pile foundation inclination real-time system for monitoring and pre-warning as claimed in claim 1 is characterized in that, said pile foundation comprises that preformed pile and scene record stake.
5. pile foundation inclination real-time system for monitoring and pre-warning as claimed in claim 1 is characterized in that said pile foundation comprises the building construction pile foundation, also comprises other construction work foundation piles such as highway, railway, bridge.
6. pile foundation inclination real-time system for monitoring and pre-warning as claimed in claim 1; It is characterized in that; Said sensor is placed on the pile foundation, comprises that being embedded in the neutralization of pile foundation concrete is fixed on the inner reinforcing bar dual mode of pile foundation, but does not limit other with sensor and the fixing mode of pile foundation.
7. pile foundation inclination real-time system for monitoring and pre-warning as claimed in claim 1 is characterized in that said system can monitor in real time, also can be set to regular detection on request.
8. pile foundation inclination real-time system for monitoring and pre-warning as claimed in claim 1 is characterized in that, the monitoring result of said system can be transferred to through wired mode on the monitoring host computer, also can send on the designated terminal through wireless mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102846158A CN102425192A (en) | 2011-09-22 | 2011-09-22 | Pile foundation inclination real-time monitoring and prewarning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102846158A CN102425192A (en) | 2011-09-22 | 2011-09-22 | Pile foundation inclination real-time monitoring and prewarning system |
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| CN102425192A true CN102425192A (en) | 2012-04-25 |
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| CN2011102846158A Pending CN102425192A (en) | 2011-09-22 | 2011-09-22 | Pile foundation inclination real-time monitoring and prewarning system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147466A (en) * | 2013-03-08 | 2013-06-12 | 中国地质大学（武汉） | Automatic inclination measurement device for precast pile with rectangular or hollow rectangular cross section |
| CN103195106A (en) * | 2013-03-08 | 2013-07-10 | 中国地质大学（武汉） | Automatic synchronous inclination measuring device for precast pile with circular or circular ring shaped cross section |
| CN103195107A (en) * | 2013-03-08 | 2013-07-10 | 中国地质大学（武汉） | Portable folding-type inclination survey device for precast pile with round or ring-shaped cross section |
| CN103215974A (en) * | 2013-04-19 | 2013-07-24 | 浙江华东工程安全技术有限公司 | Foundation pile deflection measurement method based on distributed fiber sensing technique |
| CN103215975A (en) * | 2013-04-19 | 2013-07-24 | 浙江华东工程安全技术有限公司 | Inbuilt method for distributed type sensing cable in foundation pile |
| CN103471655A (en) * | 2013-09-09 | 2013-12-25 | 山河智能装备股份有限公司 | Device for protecting inclination of stand column |
| CN104018506A (en) * | 2014-06-06 | 2014-09-03 | 中交上海三航科学研究院有限公司 | Pile-forming process dynamic testing device for underwater sand compaction pile |
| CN104480976A (en) * | 2014-11-21 | 2015-04-01 | 云南省建筑科学研究院 | Visual long-distance wireless monitoring system of pile foundation static loading test |
| CN104818735A (en) * | 2015-04-20 | 2015-08-05 | 交通运输部公路科学研究所 | Exploring drill bit and method for detecting pile foundation by using exploring drill bit |
| CN108221962A (en) * | 2018-01-10 | 2018-06-29 | 重庆大学 | A kind of friction pile that more monitorings can be achieved and preparation method thereof |
| CN108877177A (en) * | 2018-07-05 | 2018-11-23 | 同济大学 | A kind of fixed wireless inclination monitoring early warning system |
| CN112761142A (en) * | 2020-12-24 | 2021-05-07 | 黄志生 | Building pile with built-in detection sensing equipment |
| CN113483736A (en) * | 2021-07-20 | 2021-10-08 | 上海力擎地质仪器有限公司 | Gyro inclinometer and detection positioning method thereof |
| CN114993557A (en) * | 2022-08-03 | 2022-09-02 | 聊城市宝丰机电科技有限公司 | Static balance testing device |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195106A (en) * | 2013-03-08 | 2013-07-10 | 中国地质大学（武汉） | Automatic synchronous inclination measuring device for precast pile with circular or circular ring shaped cross section |
| CN103195107A (en) * | 2013-03-08 | 2013-07-10 | 中国地质大学（武汉） | Portable folding-type inclination survey device for precast pile with round or ring-shaped cross section |
| CN103195107B (en) * | 2013-03-08 | 2013-10-09 | 中国地质大学（武汉） | Portable folding-type inclination survey device for precast pile with round or ring-shaped cross section |
| CN103147466B (en) * | 2013-03-08 | 2013-11-20 | 中国地质大学（武汉） | Automatic inclination measurement device for precast pile with rectangular or hollow rectangular cross section |
| CN103195106B (en) * | 2013-03-08 | 2013-11-27 | 中国地质大学（武汉） | Automatic synchronous inclination measuring device for precast pile with circular or circular ring shaped cross section |
| CN103147466A (en) * | 2013-03-08 | 2013-06-12 | 中国地质大学（武汉） | Automatic inclination measurement device for precast pile with rectangular or hollow rectangular cross section |
| CN103215974A (en) * | 2013-04-19 | 2013-07-24 | 浙江华东工程安全技术有限公司 | Foundation pile deflection measurement method based on distributed fiber sensing technique |
| CN103215975A (en) * | 2013-04-19 | 2013-07-24 | 浙江华东工程安全技术有限公司 | Inbuilt method for distributed type sensing cable in foundation pile |
| CN103471655A (en) * | 2013-09-09 | 2013-12-25 | 山河智能装备股份有限公司 | Device for protecting inclination of stand column |
| CN104018506B (en) * | 2014-06-06 | 2015-11-25 | 中交上海三航科学研究院有限公司 | Underwater sand compaction pile formation of pile dynamic checkout unit |
| CN104018506A (en) * | 2014-06-06 | 2014-09-03 | 中交上海三航科学研究院有限公司 | Pile-forming process dynamic testing device for underwater sand compaction pile |
| CN104480976A (en) * | 2014-11-21 | 2015-04-01 | 云南省建筑科学研究院 | Visual long-distance wireless monitoring system of pile foundation static loading test |
| CN104480976B (en) * | 2014-11-21 | 2016-04-13 | 云南省建筑科学研究院 | A kind of visual dead load test on pile foundation remote wireless monitoring system |
| CN104818735A (en) * | 2015-04-20 | 2015-08-05 | 交通运输部公路科学研究所 | Exploring drill bit and method for detecting pile foundation by using exploring drill bit |
| CN108221962A (en) * | 2018-01-10 | 2018-06-29 | 重庆大学 | A kind of friction pile that more monitorings can be achieved and preparation method thereof |
| CN108877177A (en) * | 2018-07-05 | 2018-11-23 | 同济大学 | A kind of fixed wireless inclination monitoring early warning system |
| CN112761142A (en) * | 2020-12-24 | 2021-05-07 | 黄志生 | Building pile with built-in detection sensing equipment |
| CN113483736A (en) * | 2021-07-20 | 2021-10-08 | 上海力擎地质仪器有限公司 | Gyro inclinometer and detection positioning method thereof |
| CN114993557A (en) * | 2022-08-03 | 2022-09-02 | 聊城市宝丰机电科技有限公司 | Static balance testing device |
| CN114993557B (en) * | 2022-08-03 | 2022-11-22 | 聊城市宝丰机电科技有限公司 | Static balance testing device |
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Application publication date: 20120425 |