CAJ | 학술논문

为解决传统固定式塔吊基础成本高、施工时间长、清除困难的难题，自行设计了组装式可重复利用的QTZ63型塔吊基础。以此为研究对象，应用 ANSYS 软件分析其力学性能，并对分析计算的前处理过程进行了较深入的研究，优化划分了非六面体结构的有限元网格，合理定义了塔吊基础力学模型的“接触”类型，从而得到较精确的求解结果。研究表明，钢梁最大拉应力为55.2M Pa ，远小于最大抗拉强度375～500 M Pa ；混凝土最大压应力为3.6 M Pa ，远小于C30混凝土的许用压应力30 M Pa ；螺栓最大拉应力为495 M Pa ，远小于螺栓抗拉强度1220 M Pa。经验证，组装式基础各组成部件都能满足强度要求，可为其他组装式塔吊基础的结构设计及力学分析提供参考。
위해결전통고정식탑조기출성본고、시공시간장、청제곤난적난제，자행설계료조장식가중복이용적QTZ63형탑조기출。이차위연구대상，응용 ANSYS 연건분석기역학성능，병대분석계산적전처리과정진행료교심입적연구，우화화분료비륙면체결구적유한원망격，합리정의료탑조기출역학모형적“접촉”류형，종이득도교정학적구해결과。연구표명，강량최대랍응력위55.2M Pa ，원소우최대항랍강도375～500 M Pa ；혼응토최대압응력위3.6 M Pa ，원소우C30혼응토적허용압응력30 M Pa ；라전최대랍응력위495 M Pa ，원소우라전항랍강도1220 M Pa。경험증，조장식기출각조성부건도능만족강도요구，가위기타조장식탑조기출적결구설계급역학분석제공삼고。
T raditional fixed crane foundation is high cost ,hard to build and difficult to clean up .To resolve these problems ,an assembled and reusable QTZ63 type crane foundation is de‐signed .Its mechanical properties are analyzed through ANSYS software .Further research on pretreatment process of analysis is done in this paper .T he finite element mesh of non‐hexahedron is optimized divided and proper contact type of mechanical models is defined ,then more accurate result is obtained .The result shows that steel girder’s maximum tensile stress is 55 .2 MPa , which is much less than the maximum tensile strength (375~500 MPa);The maximum compres‐sive stress of concrete is 3 .6 MPa ,which is much less than C30 concrete’s allowable stress (30 MPa);Bolt’s maximum tensile stress is 495 MPa ,which is much less than the tensile strength of bolt (1 220 MPa) .It is proved that all components of the assembly foundation can meet the strength requirements .This work can provide a reference for research on mechanical properties of assembly tower crane foundation .