结构工程师
結構工程師
결구공정사
STRUCTURAL ENGINEERS
2014年
5期
49-54
,共6页
桥梁工程%拉压杆模型%构形方法%参数取值
橋樑工程%拉壓桿模型%構形方法%參數取值
교량공정%랍압간모형%구형방법%삼수취치
bridge engineering%strut-and-tie model%model configuration%parameter selection
研究了两桩承台在3种典型受力工况下的拉压杆模型设计方法，分别对应于桥墩处于轴压、小偏压和大偏压的情形。给出了不同工况下拉压杆模型的定量化几何构形；研究并确定了拉压杆模型中的节点几何形状和尺寸、混凝土有效强度等关键参数的取值方法；最后，通过实例计算演示了应用拉压杆模型进行承台验算的一般流程，结果表明本文方法具有较好的可操作性和适用性。
研究瞭兩樁承檯在3種典型受力工況下的拉壓桿模型設計方法，分彆對應于橋墩處于軸壓、小偏壓和大偏壓的情形。給齣瞭不同工況下拉壓桿模型的定量化幾何構形；研究併確定瞭拉壓桿模型中的節點幾何形狀和呎吋、混凝土有效彊度等關鍵參數的取值方法；最後，通過實例計算縯示瞭應用拉壓桿模型進行承檯驗算的一般流程，結果錶明本文方法具有較好的可操作性和適用性。
연구료량장승태재3충전형수력공황하적랍압간모형설계방법，분별대응우교돈처우축압、소편압화대편압적정형。급출료불동공황하랍압간모형적정양화궤하구형；연구병학정료랍압간모형중적절점궤하형상화척촌、혼응토유효강도등관건삼수적취치방법；최후，통과실례계산연시료응용랍압간모형진행승태험산적일반류정，결과표명본문방법구유교호적가조작성화괄용성。
In this paper, strut-and-tie models (STMs) for two-pile caps were established for three different typical load cases , which include piers under axial compression , small eccentric compression and large eccen-tric compression.Firstly, shape configurations of STMs in different load cases were studied .After that, geom-etries and dimensions of nodes and effective concrete strengths in STMs were investigated .Finally, the general procedure for pile-cap strength checking was illustrated through a working example , which shows that the pro-posed method is practical and applicable .
