A big technical problem for mass concrete stuctures during pouring is how tocontrol crack expansion 大體積混凝土基礎在澆灌中的一個重要技術課題是控制裂縫擴展。
Our works quality : science and technology to prosper factory ; products to innovate ; strict tocontrol ; quality to competefor first ; the market to take the lead ; and customer to be supreme 我廠質量方針:科技興廠,產(chǎn)品創(chuàng)新,管理從嚴,質量爭優(yōu),市場領先,顧客至上。
The constructionspeed of highwayincreases rapidly , at the same time , the path qualityexaminationdutyaggravatesdaybyday , andtheload ofroads evaluationalsoincreases quicklyin the maintenance . traditional method has many disadvantages , such asinefficiency , tiring , slow speed of evaluation etc . especially , the number ofmeasuring point is too little to give accurate and comprehensive result of theinterior recessive diseases of highway . beside this , the traditional method leadsdestructiontotheroadsurface , whichwillexacerbatethedeteriorationofhighway . in avoid not to affecting the normal travel and not to destroying the pavementstructure , it is urgently to apply nondestructive evaluation ( nde ) techniques tocontrol quality of highway construction and to estimate the running conditionaccurately . the nde techniques of highway have to satisfy the followingqualification : mapping the shape , size and depth of flaw precisely ; having nodamages to the road structure ; being capable of carrying out examination in widerange ; beingeasytoequipandoperate ; beinginsulatetotheenvironmentinfluence . theintelligenceintegrationevaluationvehicleforroadbedandpavement ( iievrp ) is just the comprehensive nde technique that can satisfy the demands above , which can implement detection of highway rapidly and nondestructively 作為吉林省科技廳高新技術項目( 20020331 ) “路基路面智能集成檢測車”的一個子項,本文在理論的基礎上,結合實驗對探地雷達檢測路面結構層厚度及路基、路面病害進行了研究,主要工作如下: 1 .闡述探地雷達發(fā)展的歷史和研究現(xiàn)狀,介紹探地雷達在路面結構層厚度檢測與路基、路面病害識別上的應用,分析探地雷達設備性能,探討其測量參數(shù)對探測性能的影響; 2 .引入matlab計算軟件,利用其中的小波分析工具箱對探地雷達信號進行分析處理; 3 .構建適于道路檢測的車載實驗平臺,為進一步完善路基路面檢測車系統(tǒng)打下了基礎; 4 .通過對模型的檢測,對探地雷達探測性能做出定性或半定量的評價; 5 .通過對實際路面的檢測,驗證探地雷達在道路檢測中的有效性。