pullout test 中文意思是什麼
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Test method for pullout resistance of ties and anchors embedded in masonry mortar joints
埋入砌築砂漿縫中的拉桿和錨的拉拔阻力的試驗方法 -
Standard test method for pullout resistance of ties and anchors embedded in masonry mortar joints
埋入磚石灰縫中的拉桿和錨的拔拉阻力的標準測試方法 -
Through direct pullout test, we examine the effect of the water to cement ratio, contend of steel fiber and silica fume on the bond behavior ; compare the bond behavior of two types of cfrp bars with difference surface treatment ( r1 bars and g1 bars ), and reprocess the one of inferior bond strength ; investigate the bond stress distribution along the bond length of cfrp bars, and assess the adequacy of some exist analytical models of bond - slip behavior to reproduce the experimental bond behavior
本文主要通過直接拉拔試驗，考察水膠比、鋼纖維摻量、硅灰摻量以及cfrp筋的表面處理類型等材料參數對粘結性能的影響，並對粘結效果較差的cfrp筋研究了表面處理方法，以提高cfrp筋與rpc的粘結性能;通過在cfrp筋表面粘貼應變片，測定了粘結應力沿cfrp筋埋長的分佈情況，並對現有的粘結滑移本構模型與試驗結果的擬合效果進行了比較。 -
Thirdly writer, using linear elastic theory and finite element program ( ansys ), analyzed expanding bolt pullout test. fifthly, writer using the modified mohr - coulomb failure theory, on the base of curving failure surface, derived a theoretical formula between pullout force and compressive strength. then the thesis compared the formula with the strength - detecting formula of expanding bolt pullout method
本文採用ansys有限元程序對脹栓拔出法試驗過程進行彈性理論分析；以修正的摩爾-庫侖破壞準則，在擬合實際破壞面的基礎上推導出極限狀態下脹栓拔出法的混凝土拔出力與混凝土抗壓強度的理論公式，並把該公式與脹栓拔出法測強公式進行了比較。 -
Standard test method for pullout strength of hardened concrete
硬化混凝土拔出強度的標準測試方法 -
The friction coefficient, critical vertical loads and critical frictional resistance strength have been worked out by means of the pullout tests under the different vertical loads, analysis of frictional characteristics between soil and material and analysis of the different work mechanism between direct shear test and pullout tests. the creep characteristic parameters of some typical reinforcement materials have been obtained by the creep tests under the loads for a long time and the rheological analysis
對幾種典型筋材在不同法向荷載下進行了拉拔試驗，並進行了筋材與土介質的界面摩擦特性分析，直剪試驗與拉拔試驗不同機理分析，找出了影響摩擦特性試驗結果的主要因素；得出了筋材在工作荷載階段的摩擦系數、臨界法向中南大學博士學位論文荷載和臨界摩阻強度。 -
Standard test method for measuring geosynthetic pullout resistance in soil
測量土壤中土工合成織物拉起阻力的標準試驗方法 -
Firstly, in the thesis writer studied and gained each test parameter of expanding bolt pullout method, and by using test data, writer regressed and gained the strength - detecting formula of expanding bolt pullout method. at the same time, the compositive strength - detecting formulas of expanding bolt pullout method, rebound method, ultrasonic method were gained. secondly, writer compared expanding bolt pullout method with them
本文研究確定了脹栓拔出法的各種試驗參數；對試驗數據進行系統的回歸分析，得出脹栓拔出法的測強公式及與回彈法、超聲法綜合測強公式，並對這幾個測強公式進行了精確性比較，發現脹栓拔出法的混凝土拔出力與混凝土抗壓強度具有良好的相關關系。 -
Two examples concerning pullout test of rock bolt and an anchor bolts reinforcing slope are calculated and analyzed. the ideal results have verified the validity of the method and its ability to solve the problems in engineering
上述工作完成後，應用本文方法對錨桿的拉拔試驗進行了數值模擬，得到了較好的計算結果，從而證明了本文計算方法的正確性。 -
It has been put forward that quality index of geotgrids should be the tensile strength, strain, and strain rate, and the sizes of geogrid " s sample for strain test are suggested ; the tensile strength of geogrid increases with increase of width of test sample, while the strain rate decreases as the pullout rate, length of sample increases, and when the pullout speed is larger, the strain rate varies with the width and length of sample, otherwise, the strain rate has little to do with them. 2
提出了將抗拉強度、延伸率和延伸速率作為土工格柵的質量控制指標，並將士工格柵延伸速率納入某些工程設計參數；建議土工格柵的延伸率測試試樣寬度至少3根，長度至少3節；並發現土工格柵抗拉強度隨寬度增加而遞增，土工格柵延伸率隨拉伸速率、試樣長度增加而減小，當拉伸速率較大時，延伸速率與試樣長度、寬度均有關；反之則基本無關。
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