世界科技研究与发展
世界科技研究與髮展
세계과기연구여발전
World Sci-Tech R & D
2015年
2期
127-130
,共4页
特高压线路%灌注桩基础%板桩基础%原状土%抗拔基础%有限元分析
特高壓線路%灌註樁基礎%闆樁基礎%原狀土%抗拔基礎%有限元分析
특고압선로%관주장기출%판장기출%원상토%항발기출%유한원분석
UHV Transmission line%pile foundation%slab &pile foundation%undisturbed soil%resistant drawing foundation%finite element analysis
将板式基础与桩基础的优点相结合，给出一种新型的板式中型桩复合基础。在计算基础的抗拔承载力时，既考虑基础及板上土重，又计算桩的摩擦力。在线路荷载较大时，基础上拔、下压承载力随着桩的埋深加长而增加，保证能选出适应多回路、特高压铁塔的基础。内力分析部分采用有限元分析方法，给出了刚度矩阵、位移和荷载向量之间的方程。与传统板式基础相比，本方法大幅减少了土石方开挖量和混凝土耗量，是一种环保、经济的基础。
將闆式基礎與樁基礎的優點相結閤，給齣一種新型的闆式中型樁複閤基礎。在計算基礎的抗拔承載力時，既攷慮基礎及闆上土重，又計算樁的摩抆力。在線路荷載較大時，基礎上拔、下壓承載力隨著樁的埋深加長而增加，保證能選齣適應多迴路、特高壓鐵塔的基礎。內力分析部分採用有限元分析方法，給齣瞭剛度矩陣、位移和荷載嚮量之間的方程。與傳統闆式基礎相比，本方法大幅減少瞭土石方開挖量和混凝土耗量，是一種環保、經濟的基礎。
장판식기출여장기출적우점상결합，급출일충신형적판식중형장복합기출。재계산기출적항발승재력시，기고필기출급판상토중，우계산장적마찰력。재선로하재교대시，기출상발、하압승재력수착장적매심가장이증가，보증능선출괄응다회로、특고압철탑적기출。내력분석부분채용유한원분석방법，급출료강도구진、위이화하재향량지간적방정。여전통판식기출상비，본방법대폭감소료토석방개알량화혼응토모량，시일충배보、경제적기출。
Combining the advantages of slab foundation and piles base,a new slab composite with medium-sized piles foun-dation is presented.When calculating the pull bearing capacity,the foundation and soil weight,and the friction force of piles are all taken into consideration.Dealing with the large line load,the capacity of bearing of pulling and pressing expand with the increasing length of the piles.Its feature ensures the selection of UHV tower foundation which adapts multi-loop.Fur-thermore,With the finite element method,the section of Internal Force Analysis of the foundation provides a matrix equation which include stiff matrix,displacement and load vectors.Compared with the traditional slab foundation,the amount of earth-work excavation and concrete consumption is significantly reduced,so it is a base for an environmentally friendly and eco-nomical.
