基于灰色关联度和AHP层次分析法评价定风速下的土遗址劣化效应  

Evaluation of the degradation effects of earthen sites at constant wind speed based on gray correlation degree and analytic hierarchy process

作　　者：谌文武[1] 夏云云 雷宏 蔡韬 CHEN Wen-wu;XIA Yun-yun;LEI Hong;CAI Tao(Key Laboratory of Mechanics on Disaster and Environment in Western China with the Ministry of Education,College of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学土木工程与力学学院,西部灾害与环境力学教育部重点实验室,兰州730000

出　　处：《兰州大学学报（自然科学版）》2021年第3期311-317,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：嘉峪关丝路(长城)文化研究院项目(170299);国家科技支撑计划项目(2014BAK16B02)。

摘　　要：设计相关试验,利用定风速下模拟土遗址墙体在野外不同环境下的劣化效应,利用灰色关联度及AHP层次分析,讨论温度、湿度及日照辐射等环境因素对风蚀影响的权重.结果表明,在不同工况环境下的风蚀初期,风蚀速率较大,随后逐渐降低并随风蚀的持续进行而趋于稳定.不同工况环境下试样的风蚀速率与时间的关系均大致符合指数关系,并与试验周期呈二次函数关系.通过灰色关联度及AHP层次分析,干湿变化对重塑土的风蚀影响最强烈,温度的剧烈变化及日照的辐射强度对风蚀的影响次之.Some tests were designed with reference to the constant wind speed to simulate the degradation effects of earthen sites under different climate conditions in the wild.And the weight of different environmental factors on wind erosion was also analyzed with the gray correlation and analytic hierarchy process(AHP).The research showed that,under different climate conditions,the wind erosion rate was relatively significant in the early stage,and finally turned to a stable value as the time went on.The relationship between the wind erosion rate and time was generally in accordance with the exponential relationship,and changed in a quadratic function with the test period.Through the gray correlation and AHP,the change of humidity had the strongest impact on the wind erosion of the remolded soil,followed by the drastic changes in temperature and the radiation intensity of sunlight.

关 键 词：土遗址 风蚀 灰色关联度 AHP层次分析 

分 类 号：TU411[建筑科学—岩土工程]