CAJ | 학술논문

风荷载是海上测风塔受到的主要荷载之一，其设计取值与测风塔的安全性、经济性密切相关。测风塔风荷载通常根据《建筑结构荷载规范》建立单独上部模型进行分析。为了更加真实地模拟测风塔风荷载，采用了测风塔上、下部整体耦合模型，通过数值方法进行分析，并与通常采用的规范估算方法进行对比。针对风荷载与结构自振频率之间的相互影响关系，提出了迭代求解风振系数的方法。通过对比分析计算，发现数值计算得出的风荷载量值比相同输入条件下规范法计算的结果小6％～26％。
풍하재시해상측풍탑수도적주요하재지일，기설계취치여측풍탑적안전성、경제성밀절상관。측풍탑풍하재통상근거《건축결구하재규범》건립단독상부모형진행분석。위료경가진실지모의측풍탑풍하재，채용료측풍탑상、하부정체우합모형，통과수치방법진행분석，병여통상채용적규범고산방법진행대비。침대풍하재여결구자진빈솔지간적상호영향관계，제출료질대구해풍진계수적방법。통과대비분석계산，발현수치계산득출적풍하재량치비상동수입조건하규범법계산적결과소6％～26％。
Wind load is one of the dominating loads for offshore wind measurement mast, whose applied amount relates closely to safety and economical efficiency.A traditional wind load model includes merely an isolated upper mast, and calculation is based on the standard of Load Code for the Design of Building Structures.To give a better simulation of wind load, a full-coupled model con-taining both the upper mast and lower foundation was built for numerical anslysis, then a comparison with code method was made.To deal with the close loop relationship between wind load and natural frequency, iteration was introduced to solve for wind vibration co-efficient.Through comparison, it was found that with identical input, wind load calculated by mumerical method is 6%~26%smal-ler than those from code method.