摘要：The layout of the buckets for tunnel boring machine(TBM)directly affects the muck removal efficiency of cutterhead during *** order to improve the muck removal performance for TBM,the optimal design of bucket layout was *** whole muck transfer process was simulated by discrete-element method(DEM),including the muck falling,colliding,pilling up,shoveling and transferring into the *** muck model was established based on size distribution analysis of muck samples from the water-supply tunnel project in jilin Province,***,the influence of the bucket number and the interval angle between buckets on muck removal performance was *** results indicated that,as the number of buckets increased from four to eight,the removed muck increased by 29%and the residual volume decreased by 40.5%,and the process became *** interval angles between buckets were corresponding to different removed muck irregularly,but the residual muck number increased generally with the *** optimal layout of buckets for the cutterhead in this tunnel project was obtained based on the simulation results,and the muck removal performance of the TBM was verified by the actual data in the engineering construction.

摘要：开放实验课程是基于专业老师的研究课题,以学生为中心设计的研究型综合实验课程。课程实施过程主要包括课题选择、文献调研、实验及方案优化、数据处理及分析、报告撰写五部分。以电纳滤膜制备与表征实验为例:学生选定课题并分工后,通过文献调研确定初步实验方案;探究基膜、热处理温度对膜选择分离性能的影响以确定最优制膜条件;表征最优膜的性能并分析分离机理,结合与商品膜性能对比完善数据分析及实验报告。通过开放实验课程,将实现对学生团队合作能力、实践能力和创新能力等的综合培养。

摘要：随着乡村振兴战略的深入推进,乡村规划和农村发展变得越来越重要,村庄规划外业调查是评估农村地区现状以及规划未来发展的重要环节。然而,传统外业调查采用打印纸图的方式不仅时效低、携带量有限,且内业整理难度大、容易出错,精度难以适配工作需求。据此,结合现有技术规范要求,设计与实现一款适用于村庄规划外业调查的软件,以数字化手段统一基础底图、规范调研内容,实现工作流程的统一和成果信息化管理。实际应用表明,该方式解决了成果表达不一致的问题,提高了调查的准确性、效率和可靠性,满足规划工作的要求。

摘要：从文化学的视角分析了武术动漫化呈现的重要意义。武术动漫化有助于推动中国文化"走出去"战略的实施,有助于民族文化身份的认同;有利于世人对武术文化的认知与认同;有助于武术的传承与发展。动漫以"新生代"为消费主体、能有效降低"文化折扣"、雅俗共赏等特征有助于武术的国际化传播,本文对此进行分析并提出了发挥动漫对于武术传播的优势路径。

摘要：In order to improve the strength and stiffness of shield cutterhead, the method of fuzzy mathematics theory in combination with the finite element analysis is adopted. An optimal design model of structural parameters for shield cutterhead is formulated,based on the complex engineering technical requirements. In the model, as the objective function of the model is a composite function of the strength and stiffness, the response surface method is applied to formulate the approximate function of objective function in order to reduce the solution scale of optimal problem. A multi-objective genetic algorithm is used to solve the cutterhead structure design problem and the change rule of the stress-strain with various structural parameters as well as their optimal values were researched under specific geological conditions. The results show that compared with original cutterhead structure scheme, the obtained optimal scheme of the cutterhead structure can greatly improve the strength and stiffness of the cutterhead, which can be seen from the reduction of its maximum equivalent stress by 21.2%, that of its maximum deformation by 0.75%, and that of its mass by 1.04%.

摘要：刀盘是盾构机的关键部件之一,主要用来完成对掌子面岩土的破碎剥离。根据某盾构刀盘的结构特点,建立其三维实体模型,并建立了刀盘相应的有限元计算模型,对刀盘在土压不平衡工况和土压平衡工况下的受力特性进行分析,得到了刀盘在各工况下的应力应变分布规律。分析结果表明,最大等效应力出现在牛腿与面板的交界处,同时牛腿与法兰盘以及面板与辅梁的连接处有较大的应力。最大应力为230 MPa,最大变形为2.098 mm。研究结果可为刀盘的结构设计和工程施工维护提供基础数据。

摘要：推进课程思政建设是坚持落实立德树人根本任务的必由之路。目前理工科专业课教学多注重专业能力培养,在学生的德育培养方面,课堂思政功能明显不强。以“化学海洋学”课程为例,挖掘、整合、精选思想政治案例,引入紧扣思想政治主题的热点议题,引导学生结合专业知识解读思想政治议题,使思想政治教育与化学海洋学专业知识在育人上形成协同效应,突出价值塑造与能力培养,让学生在润物无声的专业知识学习中树立正确的价值观,最终达成思想政治育人的成效。

摘要：针对高速动车组制动盘在制动过程中因温度急剧上升,使制动盘受热膨胀产生热应力,最终出现热裂纹而导致制动盘失效的问题,根据热传导理论、弹性力学变分原理及热应力理论,分析制动盘在各界面上产生的热传导、对流和辐射换热以及受热膨胀产生的热应力。依据实际几何尺寸,建立制动盘的循环对称三维瞬态计算模型,考虑弹性模量、比热容、导热系数和线胀系数等材料参数随温度变化的影响,利用大型有限元分析软件ANSYS模拟制动盘的制动过程,分析计算制动盘温度与应力的分布,并通过试验得到验证。仿真结果表明:高速动车组在时速为200 km/h下紧急制动,制动后40 s制动盘最高温度达到416℃,制动后60 s最大应力达到651 MPa,所设计的制动盘满足强度许用应力要求。

摘要：设计一种结构将多个独立的W eb应用集成为一个整体,使用户仅需一次登录即可完成在所有应用下的认证,实现各应用间的自由转换。结合Resin容器自身的认证授权机制,通过设计实现Resin下Authenticator类的一个子类SSOAuthenticator,使Resin容器与统一登录框架达到无缝融合,保证用户使用的透明性。

摘要：防渗体系是保证深厚覆盖层地基上沥青混凝土心墙坝安全运行的最重要结构,其安全性备受关注。因此,对超深覆盖层上沥青混凝土心墙坝开展了大规模的三维有限元分析,研究了防渗体系在填筑和蓄水过程中的应力变形特性。结果表明,沥青混凝土心墙两岸局部区域的拉应变相对较大,应重点关注;嵌入两岸的廊道设计导致廊道及防渗墙顶部两端出现高应力区;在廊道和两岸之间设置结构缝或波纹管,可有效改善廊道和防渗墙应力状态。研究成果为超深覆盖层上土石坝防渗体的设计、优化和安全评价提供了支撑。