中国港湾建设
中國港灣建設
중국항만건설
CHINA HARBOUR ENGINEERING
2014年
5期
21-27
,共7页
铺面工程%装运机械%弯拉应力%土基压应变%当量单轮荷载
鋪麵工程%裝運機械%彎拉應力%土基壓應變%噹量單輪荷載
포면공정%장운궤계%만랍응력%토기압응변%당량단륜하재
pavement engineering%shipping machinery%flexural tensile stress%subgrade compressive strain%equivalent single wheel load
为考虑港区繁杂荷载对铺面结构的影响。通过引入当量单轮荷载系数和旁邻轮影响系数,明确了当量单轮荷载概念及其计算公式;计算了港口常用各种型号的叉车、正面吊、轮胎式和汽车式起重机、跨运车、龙门吊、集装箱拖挂车、平板车等装运机械在不同铺面结构条件下,针对沥青面层层底弯拉应变、半刚性基层层底弯拉应力及土基顶面压应变的当量单轮荷载系数;进而得出了针对不同设计指标的各种常用装运机械当量单轮荷载系数的变化规律;建立了当量单轮荷载系数与铺面结构参数的回归关系式。
為攷慮港區繁雜荷載對鋪麵結構的影響。通過引入噹量單輪荷載繫數和徬鄰輪影響繫數,明確瞭噹量單輪荷載概唸及其計算公式;計算瞭港口常用各種型號的扠車、正麵弔、輪胎式和汽車式起重機、跨運車、龍門弔、集裝箱拖掛車、平闆車等裝運機械在不同鋪麵結構條件下,針對瀝青麵層層底彎拉應變、半剛性基層層底彎拉應力及土基頂麵壓應變的噹量單輪荷載繫數;進而得齣瞭針對不同設計指標的各種常用裝運機械噹量單輪荷載繫數的變化規律;建立瞭噹量單輪荷載繫數與鋪麵結構參數的迴歸關繫式。
위고필항구번잡하재대포면결구적영향。통과인입당량단륜하재계수화방린륜영향계수,명학료당량단륜하재개념급기계산공식;계산료항구상용각충형호적차차、정면조、륜태식화기차식기중궤、과운차、룡문조、집장상타괘차、평판차등장운궤계재불동포면결구조건하,침대력청면층층저만랍응변、반강성기층층저만랍응력급토기정면압응변적당량단륜하재계수;진이득출료침대불동설계지표적각충상용장운궤계당량단륜하재계수적변화규률;건립료당량단륜하재계수여포면결구삼수적회귀관계식。
To consider the effect of complex loads on pavement structures, the concept and formula expression of equivalent single wheel load are clear and definite by introducing the equivalent single wheel load coefficients and adjacent wheel effect coefficients. The equivalent single wheel load coefficients basis on flexural tensile strain at the bottom of asphalt layer, flexural tensile stress at the bottom of semi-rigid base layer and compressive strain at the top of subgrade for shipping machineries such as forklift, front carrier, tire and vehicle crane, gantry cranes, straddle carriers, container trailers and platform trailer are calculated. Then rules of equivalent single wheel load coefficients of different design indexes are obtained. The regression re-lation formulas between equivalent single wheel load coefficients and pavement structure parameters are established.