城市勘测
城市勘測
성시감측
URBAN GEOTECHNICAL INVESTIGATION & SURVEYING
2012年
5期
159-162
,共4页
辉长岩残积土%天然地基%载荷试验%变形模量%沉降计算
輝長巖殘積土%天然地基%載荷試驗%變形模量%沉降計算
휘장암잔적토%천연지기%재하시험%변형모량%침강계산
gabbro eluvial soil%natural foundation%load test%deformation modulus%settlement calculation
济南市区内第四系地层下部分布着中生代浅层侵入的辉长岩体，具有球状风化特点，其风化程度与所处岩体位置不同差异性较大。在岩体的过度相上，岩石风化均存在垂直分带性，上部残积土厚度一般为5～10米。借助某工程实践，对辉长岩残积土的力学性质进行了深入分析与研究，通过浅层平板栽荷试验，准确提供了该土层地基承载力特征值，并计算取得变形模量，通过沉降变形计算，得出天然地基方案是可行的。
濟南市區內第四繫地層下部分佈著中生代淺層侵入的輝長巖體，具有毬狀風化特點，其風化程度與所處巖體位置不同差異性較大。在巖體的過度相上，巖石風化均存在垂直分帶性，上部殘積土厚度一般為5～10米。藉助某工程實踐，對輝長巖殘積土的力學性質進行瞭深入分析與研究，通過淺層平闆栽荷試驗，準確提供瞭該土層地基承載力特徵值，併計算取得變形模量，通過沉降變形計算，得齣天然地基方案是可行的。
제남시구내제사계지층하부분포착중생대천층침입적휘장암체，구유구상풍화특점，기풍화정도여소처암체위치불동차이성교대。재암체적과도상상，암석풍화균존재수직분대성，상부잔적토후도일반위5～10미。차조모공정실천，대휘장암잔적토적역학성질진행료심입분석여연구，통과천층평판재하시험，준학제공료해토층지기승재력특정치，병계산취득변형모량，통과침강변형계산，득출천연지기방안시가행적。
The lower part of the Quaternary distribution of Mesozoic shallow intrusive gabbro with spherical weathering characteristics,its degree of weathering in which rock mass position differences at Jinan area. Over phase of the rock mass, rock weathering is vertically separated ,the upper residual soil thickness of 5 to 10 meters. With an engineering practice ,the author conducted in-depth analysis and research on the mechanical properties of the gabbro residual soil. Shallow plate load test provided accurately eigenvalue of foundation bearing capacity of the soil, and the author calculated to obtain the modu- lus of deformation, so we can know settlement deformation obtained natural foundation program is feasible.
