桩承载力Rapid Load Testing法检测设备介绍
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摘要
Rapid load testing(RLT)是一种快速检测桩基竖向抗压承载力的方法,本法已纳入日本、美国、欧洲等地标准,但尚未在我国大陆地区推广使用。RLT法的检测设备可分成两大类:一是以Statnamic(静动法)为代表的燃烧推进法,利用特制燃料快速燃烧产生的高压气体加载,目前最大加载能力已达万t,但Statnamic法所用燃料要受政府管控;二是以StatRapid、Hybridnamic为代表的落重弹簧法,利用重物下落对桩头的冲击配合弹簧进行加载,目前的加载能力在几千t以内。另外,落重弹簧法中的Spring Hammer等方法,可实现数百t以内加载量的快速测试。
Rapid load testing(RLT)is a rapid testing method for the vertical compressive bearing capacity testing of pile foundations. It has been incorporated into the testing standards of Japan,the United States and Europe. The devices of the RLT method are divided into two categories :The first is the combustion propulsion method represented by Statnamic. The high-pressure gas generated by the rapid combustion of special fuel is used to loading the pile. The current maximum loading capacity has reached 10 000 tons. The using of fuel is under government control for the Statnamic. The second is the weight-dropping spring method represented by StatRapid and Hybridnamic. The pile is loaded by the impact of the weight hitting the pile head,cooperating with springs. The current loading capacity is within a few thousand tons. For the weight-dropping spring method,the Spring Hammer method can be easily used for the testing in several hundred tons of loading capacity.
Rapid load testing(RLT)is a rapid testing method for the vertical compressive bearing capacity testing of pile foundations. It has been incorporated into the testing standards of Japan,the United States and Europe. The devices of the RLT method are divided into two categories :The first is the combustion propulsion method represented by Statnamic. The high-pressure gas generated by the rapid combustion of special fuel is used to loading the pile. The current maximum loading capacity has reached 10 000 tons. The using of fuel is under government control for the Statnamic. The second is the weight-dropping spring method represented by StatRapid and Hybridnamic. The pile is loaded by the impact of the weight hitting the pile head,cooperating with springs. The current loading capacity is within a few thousand tons. For the weight-dropping spring method,the Spring Hammer method can be easily used for the testing in several hundred tons of loading capacity.
引文
[1]http://www.allnamics.eu/wp-content/uploads/ALLNAMICS-STR-Brochure.pdf,2018-05-22.
[2]StatRapid Load Testing Equipment[EB/OL].http://allnamics.eu/products-2/,2018-05-22.
[3]Hybridnamic Load Test[EB/OL].http://www.jibanshikenjo.co.jp/english/contents/catalogue/pdf/Hybridnamic-test.pdf,2018-05-22.
[4]MIYASAKA,T,KUWABARA,F,LIKINS,G,et al.Rapid Load Test on High Bearing Capacity Piles[C].Proceedings of 8th International Conference on Application of Stress-Wave Theory to Piles,2008:501-507.
[5]MIYASAKA,T,LIKINS,G,KUWABARA,F,et al.Improved Methods for Rapid Load Tests of Deep Foundatioins[C].Contemporary Topics in Deep Foundations:Selected Papers from the 2009 International Foundation Congress and Equipment Expo.2009:629-636.
[6]SCHELLINGERHOUT,A.J.G.,REVOORT,E.Pseudo Static Pile Load Tester[C].Proceedings of 5th International Conference on Application of Stress-Wave Theory to Piles,1996:1031-1037.
[7]Available equipments[EB/OL].https://publicwiki.deltares.nl/display/RLT/Available+equipments,2018-05-21.
[8]MATSUZAWA,K,NAKASHIMA,Y,MATSUMOTO,T.Spring Hammer Rapid Load Test and Its Validations[C].Proceedings of 2nd International Conference on Foundations,2008:223-234.
[9]MATSUMOTO,T.Practice of Rapid Load Testing in Japan[C].Rapid Load Testing on Piles,2009:47-57.
[10]MATSUZAWA,K,MATSUMOTO,T.Extended Use of Spring Hammer Rapid Load Testing[J].Geotechnical Engineering Journal of the SEAGS&AGSSEA,2011,42(2):29-42.
[2]StatRapid Load Testing Equipment[EB/OL].http://allnamics.eu/products-2/,2018-05-22.
[3]Hybridnamic Load Test[EB/OL].http://www.jibanshikenjo.co.jp/english/contents/catalogue/pdf/Hybridnamic-test.pdf,2018-05-22.
[4]MIYASAKA,T,KUWABARA,F,LIKINS,G,et al.Rapid Load Test on High Bearing Capacity Piles[C].Proceedings of 8th International Conference on Application of Stress-Wave Theory to Piles,2008:501-507.
[5]MIYASAKA,T,LIKINS,G,KUWABARA,F,et al.Improved Methods for Rapid Load Tests of Deep Foundatioins[C].Contemporary Topics in Deep Foundations:Selected Papers from the 2009 International Foundation Congress and Equipment Expo.2009:629-636.
[6]SCHELLINGERHOUT,A.J.G.,REVOORT,E.Pseudo Static Pile Load Tester[C].Proceedings of 5th International Conference on Application of Stress-Wave Theory to Piles,1996:1031-1037.
[7]Available equipments[EB/OL].https://publicwiki.deltares.nl/display/RLT/Available+equipments,2018-05-21.
[8]MATSUZAWA,K,NAKASHIMA,Y,MATSUMOTO,T.Spring Hammer Rapid Load Test and Its Validations[C].Proceedings of 2nd International Conference on Foundations,2008:223-234.
[9]MATSUMOTO,T.Practice of Rapid Load Testing in Japan[C].Rapid Load Testing on Piles,2009:47-57.
[10]MATSUZAWA,K,MATSUMOTO,T.Extended Use of Spring Hammer Rapid Load Testing[J].Geotechnical Engineering Journal of the SEAGS&AGSSEA,2011,42(2):29-42.