CAJ | 학술논문

以采动影响下高压线铁塔为原型，采用数值模拟方法对地表倾斜变形与铁塔内力和变形特征关系进行了研究，分析了不同地表倾斜变形情况下高压线铁塔内力、位移和基础支座反力和临界地表倾斜值．结果表明：随着地表倾斜值的增加，高压线铁塔杆件的轴向压应力及拉应力最大值均呈二次方关系增加，高压线塔倾斜度及横担歪斜度呈线性关系增加．当采动引起的地表倾斜变形超过安全临界倾斜变形值时，铁塔杆件最大轴向应力超过其许用应力，处于不安全状态；高压线铁塔基础支座反力呈显非线性变化．这些研究为采动区高压线铁塔的安全性分析与评价提供了理论依据．
이채동영향하고압선철탑위원형，채용수치모의방법대지표경사변형여철탑내력화변형특정관계진행료연구，분석료불동지표경사변형정황하고압선철탑내력、위이화기출지좌반력화림계지표경사치．결과표명：수착지표경사치적증가，고압선철탑간건적축향압응력급랍응력최대치균정이차방관계증가，고압선탑경사도급횡담왜사도정선성관계증가．당채동인기적지표경사변형초과안전림계경사변형치시，철탑간건최대축향응력초과기허용응력，처우불안전상태；고압선철탑기출지좌반력정현비선성변화．저사연구위채동구고압선철탑적안전성분석여평개제공료이론의거．
High-voltage transmission line tower is a kind of high structures and it is sensitive to surface slope due to undermining. Based on the high-voltage transmission line tower effected by mining, the relationship between the stress and deformation of the high-voltage transmission line tower and surface slope was studied by numerical simulation method. The stress, displacement and foundation reverse force of the tower and the criti- cal surface slope were analyzed in different surface slope. The results indicate that the compressive and tensile axis stress of the member bar in the tower increases by square relationship, and the inclination of the tower and its transom increase by linear relationship ,with the increase of surface slope. As the surface slope due to min- ing is larger than the critical surface slope, the axis stress of the bar in the tower will exceed allowable stress so that the tower will be not safe. The foundatio.n reverse force of the tower varies with the increase of surface slope by nonlinear relationship. It provide theoretical basis for the safety evaluation of the high-voltage trans- mission tower in coal mining area.