By the check - out , inspection and measurement to start construction the industrial art to this test pile with the examination between stake body mass and bearing power , made sure the stroke reasonable operation method drilling under the dissolved cavern geology term ; the pier foundation loading test expressed the lading and rub the lading that resistance drag a glazing for of relation , and to the borehole cast - in - place concrete pile in the karst terrain deliver with break the mechanism , the characteristic of bearing power , proceeding the spot test job of the full of result ; the test data expresses the stake side friction resistance to rises with a bat batch terminal friction resistance very important function , the of tip of pile resistance drag occupies the proportion very few 通過對本次試樁施工工藝的檢測和樁身質(zhì)量及承載力的檢驗,確定了沖擊鉆在溶洞地質(zhì)條件下的合理使用方法;基樁承載實驗表明了荷載與摩擦阻力之間的關(guān)系,并對巖溶地區(qū)的嵌巖灌注樁的荷載傳遞和破壞機理、承載力特性,進(jìn)行了富有成果的現(xiàn)場測試工作;試驗數(shù)據(jù)表明樁側(cè)摩阻和支盤端阻起很重要的作用,樁端阻力所占比例甚少。這與設(shè)計樁基時的計算模式相差很大,承載力也較設(shè)計增加;使用力學(xué)數(shù)值分析方法和有限單元法,對鉆孔灌注樁樁端下的巖體強度和結(jié)構(gòu)穩(wěn)定性方面進(jìn)行模擬計算和定量研究。