地震工程学报
地震工程學報
지진공정학보
China Earthquake Engineering Journal
2015年
1期
126-130
,共5页
黄博%夏唐代%赵晴%贺鹏飞
黃博%夏唐代%趙晴%賀鵬飛
황박%하당대%조청%하붕비
砖混结构%自振频率%减振措施%钻孔灌注排桩
磚混結構%自振頻率%減振措施%鑽孔灌註排樁
전혼결구%자진빈솔%감진조시%찬공관주배장
brick-concrete structure%natural vibration frequency%vibration reduction measure%cast-in-place bored pile
老旧小区中房屋产生振动影响正常使用的现象近期日益增多。这些房屋一般为6~7层砖混结构,属于多层住宅。本文基于某典型小区房屋振动现象,根据地质和房屋资料,采用经验公式法对小区房屋自振频率进行估算,结合现场微振测试结果,确定由大型车辆经过或是车站车辆制动及启动引起的振动,其频率较低,与房屋的自振频率相近,是引发房屋振动的主要原因。结合此类小区自身特点,对常用减振方法的实用性逐一进行分析,选择打钻孔灌注排桩的方式作为房屋的减振措施,并提出初步设计方案。
老舊小區中房屋產生振動影響正常使用的現象近期日益增多。這些房屋一般為6~7層磚混結構,屬于多層住宅。本文基于某典型小區房屋振動現象,根據地質和房屋資料,採用經驗公式法對小區房屋自振頻率進行估算,結閤現場微振測試結果,確定由大型車輛經過或是車站車輛製動及啟動引起的振動,其頻率較低,與房屋的自振頻率相近,是引髮房屋振動的主要原因。結閤此類小區自身特點,對常用減振方法的實用性逐一進行分析,選擇打鑽孔灌註排樁的方式作為房屋的減振措施,併提齣初步設計方案。
로구소구중방옥산생진동영향정상사용적현상근기일익증다。저사방옥일반위6~7층전혼결구,속우다층주택。본문기우모전형소구방옥진동현상,근거지질화방옥자료,채용경험공식법대소구방옥자진빈솔진행고산,결합현장미진측시결과,학정유대형차량경과혹시차참차량제동급계동인기적진동,기빈솔교저,여방옥적자진빈솔상근,시인발방옥진동적주요원인。결합차류소구자신특점,대상용감진방법적실용성축일진행분석,선택타찬공관주배장적방식작위방옥적감진조시,병제출초보설계방안。
Recently,vibration in buildings in old residential districts has been increasing.These buildings are brick-concrete structures,and are multi-story residences,generally with 6 ~ 7 floors.In this study,the natural frequency of buildings in a district is empirically estimated.Com-bining with the in-situ test results,the vibration caused by heavy vehicle traffic or braking and starting of vehicles at bus station,whose frequency is close to the natural frequency of buildings in the district,is the main reason of vibration in buildings.Considering the characteristics of the stud-y district,popular methods to reduce the vibration here are analyzed to obtain the most suitable method for the district.Cast-in-place bored piles in rows are selected for this district and a prelimi-nary solution for vibration reduction is presented.