CAJ | 학술논문

拟建办公楼临近及上跨北京地铁4号线，为查明场地地基土特性、地下管线分布、地铁隧道的位置和埋深等情况，采用多种物探手段开展综合探测。运用高密度电法和地质雷达获取地铁隧道的位置、埋深和宽度等数据，两种方法的探测结果具有一致性，但在反演深度时均存在误差，而引起误差的原因则各不相同；以管线探测仪为主，地质雷达为辅，结合现场调查，绘制出场地内地下管线分布图。运用微动测试获得不同时段、不同位置的场地特征周期和振动幅值，分析表明地铁运行对拟建场地具有影响。运用剪切波速测试计算出相应的等效剪切波速度，对场地土层和场地类型进行了分类，并从场地土特性角度探讨了振动在介质中的传播规律。
의건판공루림근급상과북경지철4호선，위사명장지지기토특성、지하관선분포、지철수도적위치화매심등정황，채용다충물탐수단개전종합탐측。운용고밀도전법화지질뢰체획취지철수도적위치、매심화관도등수거，량충방법적탐측결과구유일치성，단재반연심도시균존재오차，이인기오차적원인칙각불상동；이관선탐측의위주，지질뢰체위보，결합현장조사，회제출장지내지하관선분포도。운용미동측시획득불동시단、불동위치적장지특정주기화진동폭치，분석표명지철운행대의건장지구유영향。운용전절파속측시계산출상응적등효전절파속도，대장지토층화장지류형진행료분류，병종장지토특성각도탐토료진동재개질중적전파규률。
The planned building is closed to or over spanned Metro Line 4 of Beijing. To find out the characteristics of foundation soil, the distribution of underground pipelines, the metro tunnel location and buried depth, etc, the comprehensive geophysical techniques were used. The high?density resistivity method and ground penetrating radar ( GPR) were used to detect the metro tunnel location, buried depth and width, both obtained the similar results, but there was error during inversing the buried depth, and the causes of the error were different. Based on pipeline detector, and combined with the GPR and field investigation, the distribution maps of the underground pipelines were drew. The pulsation measurement technology was used to obtain the predominant period and the amplitude at different positions and depth during different times, the comparative analysis showed that the metro running evoked the dynamic response on the foundation. The shear wave velocity measurement was used and calculated the equivalent shear wave velocity, the foundation soil layers and the foundation type were classed, and the rule of the vibration transmitted in the foundation was discussed.