采用Monte Carlo模拟手段，提出描述场地土层特性变异性对传递函数变异性影响的分析方法。选取日本Kik-Net强震数据库中软（FKSH14）、硬（FKSH12）两类场地，建立场地概率模型。应用Monte Carlo技术随机生成50组场地剖面，分别计算场地的传递函数STF及STF标准差，讨论场地土层厚度、剪切波速，以及二者组合情况下场地传递函数的标准差及场地特征频率的变化。结果显示：对于硬土场地而言，场地特征频率标准差相对于软土场地较大，且剪切波速变异性影响比土层厚度变异性的影响略大，而二者组合工况下最大；而软土场地，土层厚度、剪切波速变化工况下场地特征频率的标准差相当，比二者组合工况下略低；软、硬两类场地，土层厚度与剪切波速二者组合工况下 STF 的标准差比单一量变化情况下略大，但3种工况下场地STF标准差相差不明显；场地STF的标准差在场地自振频率附近的频率段取值较大，极值点与场地STF的极值点相对应。

Adopting Monte Carlo simulation technique, a method for describing the variability of site transfer function (STF) with respect to the variability of site characteristic parameters is proposed. Two Kik-Net seismic strong-motion stations, which were installed on hard ground (FKSH12) and soft site (FKSH14) in Japan, were selected and corresponding probability site models were established. 50 site soil profiles were randomly generated for hard ground and soft site via Monte Carlo simulation;and then the STFs were calculated as well their standard deviations, respectively. The standard deviations of STFs and the site characteristic frequencies were discussed in three cases, i.e. varying subsoil thicknesses (case I), varying subsoil shear wave velocities (case II), and varying subsoil thickness and shear wave velocities (case III). The results show that:the standard deviations of site characteristic frequencies of hard ground is overall larger than those of soft site;the standard deviation

基于999条具有完整信息的欧洲及其毗邻地区的近场强震动记录，对反映地震动频谱特性的不同特征周期参数（反应谱卓越周期Tp、平滑化反应谱卓越周期To、傅氏幅值谱平均周期Tm）进行了研究，分析了场地条件、地震震级等因素对近场水平向及竖向地震动频谱特征周期的影响，并探讨了我国现行规范中设计反应谱特征周期Tg取值的合理性问题。统计结果表明：在近场区域场地和震中距仍是影响地震动频谱特征周期的重要因素，因为近场地震动的复杂性，震级对地震动频谱特征周期的影响不是很明显；近场区域竖向与水平向地震动的频谱特征周期有明显差别，且场地越软竖向与水平向地震动频谱特征周期的比值越小；我国现行抗震规范中设计反应谱的特征周期取值偏低，可能是偏于不安全的。

Three characteristic periods (i.e.,predominant period Tp ,smoothed spectral predominant period To and mean period Tm )were calculated in this paper based on 999 records of near field ground motions from the earthquakes in Europe and its adjacent areas.Those character-istic periods were analyzed to study the impacts of site condition,earthquake magnitude and other factors on the frequency contents of vertical and horizontal ground motions in near field,and to discuss the reasonable value of characteristic periods in current seismic design code.The results show that site condition and epicentral distance are the important factors affecting the characteristic periods of ground motions in near field,but the influence of earth-quake magnitude is not obvious for the complexity of the near field ground motions.The characteristic periods of vertical and horizontal ground motions are obviously different,the ratio of vertical and horizontal ground motions becomes smaller when the stiffness of si

通过山东省某立交桥工程场地地震构造环境、地震活动特征和场地条件勘探，评价了工程场地的稳定性。利用地震危险性概率分析方法获得了场地50年超越概率10%、5%和2%，100年超越概率5%和2%的基岩地震动参数。采用一维剪切波理论进行了场地土层地震动反应分析，确定了工程场地抗震设计参数。本项研究成果为山东省某立交桥工程选址和抗震设计提供了科学依据。

In this paper, Based on the seismotectonic environment , earthquake activity characteristics and site conditions of exploration on engineering site of the overpass, in Shandong province, we have evaluated to the site stability. When the transcendental probability is 10% ,5% ,2% in 50 years and 5% ,2% in 100 years respectively,the ground motion parameters of the site on Bedrock is obtained with seismic hazard analysis. Based on one dimensional shear wave theory,the seismic response of the site is analyzed,and the design aseismic parameters are determined.The results have provide scientific basis for the Project location and aseismatic design of the site for the the overpass, in Shandong province .

对西安地裂缝场地的基本特征及成因机制进行了综述，通过勘察跨浐河二级阶地和三级阶地两个地貌单元的地裂缝场地特征，确定了地裂缝的平面展布位置、活动性及勘探精度修正值Δk 等，并提出了几点对该类地裂缝场地勘察设计的建议，为地裂缝场地的总体规划和设计施工提供依据。

This paper reviewed the basic features and genetic mechanism of Xi’an ground fissures site,through the investigation on ground fis-sures site characteristics of Chanhe two terraces and three terraces two geomorphic units to determine the plane distribution location,activity and exploration precision correction value Δk of ground fissures,and put forward several investigation and design suggestions to the type ground fis-sures site,provided the basis for the overall planning and design construction of ground fissures.

为准确界定某典型蓄电池企业污染场地土壤中特征性污染物 Pb 的空间分布范围，分析和比较了数据拆分后的分区预测模型(OKLG + TIN)、数据正态变换后克里格模型(OKBC )、反距离加权模型(IDW)以及样条函数模型(Spline)对土壤 Pb 污染空间分布预测和污染评价的影响。结果表明，原始数据集具有高偏倚特征，局部区域存在较大的空间变异性；分区预测模型取得了最高的预测精度，预测的污染物空间分布比较符合场地实际污染状况，其它3种模型受适用原理及数据特征影响，预测精度较低，预测结果不能很好反映高污染区域的细部变化特征，不适合该场地 Pb 的空间分布预测与制图。研究结果对于此类型工业污染场地后续的修复范围确定和修复治理决策制定提供了参考。

In order to enhance the reliability of risk estimation and to improve the accuracy of pollution scope determination in a battery contaminated site with the soil characteristic pollutant Pb, four spatial interpolation models, including Combination Prediction Model (OKLG + TIN), kriging model(OKBC ), Inverse Distance Weighting model (IDW), and Spline model were employed to compare their effects on the spatial distribution and pollution assessment of soil Pb. The results showed that Pb concentration varied significantly and the data was severely skewed. The variation coefficient of the site was higher in the local region. OKLG + TIN was found to be more accurate than the other three models in predicting the actual pollution situations of the contaminated site. The prediction accuracy of other models was lower, due to the effect of the principle of different models and datum feature. The interpolation results of OKBC , IDW and Spline could not reflect the detailed characteristics