运用压浆技术加固桥梁基础

结合山东省枣庄市省道干线公路新(泰)～枣(庄)公路小北庄桥(k127 532)的加固方案，介绍运用压浆技术加固桥梁基础。     

不同预测算法在简单交通场景中的应用比较

为探讨不同趋势预测算法在简单交通场景中应用的有效性,以部分高速公路收费站数据集为研究对象,分别采用自回归积分滑动平均(Autoregressive Integrated Moving Average,ARIMA)模型、长短期记忆(Long Short-Term Memory,LSTM)循环神经网络和Prophet时间序列预测算法建立交通流预测模型.通过对比分析发现,3种预测模型在解决交通流预测问题方面均表现良好,相比之下,LSTM在模型拟合和预测精度方面表现更好,泛化能力更强,且在影响因素设置方面更为灵活.在以后的研究中,可采用LSTM,结合调参方法解决更多交通场景下的交通流预测问题.     

软土地区钻孔灌注桩的施工体会

宁波地区土层为软塑或流塑状态,地质条件较差,在施工中,通过施工工艺控制,减少或避免缩径、离析、夹层等缺陷.     

复杂网络上的交通动力学

本文提出了一个网络上的简单交通流模型。对于规则网络和无标度网络来说,都存在着从自由相到堵塞相的尖锐相变。相变点的值可以用来衡量一个网络处理信息的能力,它是由网络本身的拓扑结构决定的。随着网络节点N的增加,网络的相变点在带周期边界的规则网格是NO.5量级的,而对于无标度网络则几乎不变。模拟结果与理论分析很好地吻合。     

On Restricted Connectivity and Extra Connectivity of Hypercubes and Folded Hypercubes

Given a graph G and a non-negative integer h, the h-restricted connectivity k^h(G) of G is the minimum cardinality of a set of vertices of G, in which at least h neighbors of any vertex is not included, if any, whose deletion disconnects G and every remaining component has the minimum degree of vertex at least h; and the h-extra connectivity k^h(G) Of G is the minimum cardinality of a set of vertices of G, if any, whose deletion disconnects G and every remaining component has order more than h. This paper shows that for the hypercube Qn and the folded hypercube FQn, k1(Qn)=k^（1）(Qn)=2n-2 for n≥3, k2(Qn)=3n-5 for n≥4, k1(FQn)=k^(1)(FQn)=2n for n≥4 and k^(2)(FQn)=4n-4 for n≥8.     

Probit随机均衡选择模型在P＆R需求预测中的应用

在进行停车换乘（P＆R）设施规划的过程中，直接使用Logit选择模型进行方式划分存在着重大的缺陷，故需建立人们出行选择的Probit随机均衡选择模型及其仿真解法。应用实例表明，在停车换乘需求预测中使用Probit随机均衡选择模型，可以有效地解决Logit模型中存在的问题。     

多媒体支持下的英语视听说教学

现代教育要求教育手段和形式的现代化、科技化。本文从英语视听说教学和多媒体的应用的角度出发,探讨了二者之间的关系。在分析了视听说课程的特点的基础上,对采用多媒体教学的方式提出了建议;进而进一步阐释了应用多媒体教学的优势。文章的第三部分涉及的内容为如何构建多媒体教学网络和环境。     

基于PREEvision的汽车电子电气架构工具链研究

目前运用PREEvision进行汽车电子电气架构设计已经成为发展趋势,本文主要介绍基于PREEvision的汽车电子电气架构工具链研究,以及运用工具链进行汽车电子电气架构设计的优点。     

波形钢腹板与混凝土箱梁桥经济性及受力性能比较

在某工程方案比选阶段,对波形钢腹板PC组合梁桥与传统PC箱梁桥进行了经济性与受力性能比较,波形钢腹板PC组合梁桥大幅度减少了桥梁混凝土用量,节省造价,并能充分发挥两种材料的性能优势,在该工程进行了应用。     

Research on Dynamic Response Characteristics of 6MW Spar-Type Floating Offshore Wind Turbine

A 6 MW spar-type floating offshore wind turbine(FOWT) model is put forward and a fully coupled aero-hydro-servo-elastic time domain model is established in the fatigue,aerodynamics,structures and turbulence(FAST) code.Influence rules of wind load and wave load on the characteristics of 6 MW spar-type FOWT are investigated.Firstly,validation of the model is carried out and a satisfactory result is obtained.The maximal deviations of rotor thrust and power between simulation results and reference values are 4.54% and-2.74%,respectively.Then the characteristics,including rotor thrust,rotor power,out-of-plane blade deflection,tower base fore-aft bending moment,and mooring line tension,are researched.The results illustrate that the mean value of dynamic response characteristics is mainly controlled by the wind-induced action.For characteristics of tower base fore-aft bending moment and platform pitch motion,the oscillation is dominated by the wave-induced action during all conditions considered.For characteristics of out-of-plane blade tip deflection and mooring line tension,the oscillation is commanded by combination effect of wave and wind loads when the wind speed is lower than the rated wind speed(hereinafter referred to as below rated wind speed) and is controlled by the wave-induced action when the wind speed is higher than the rated wind speed(hereinafter referred to as above rated wind speed).As to the rotor thrust and power,the oscillation is dominated by the wind induced action at below rated wind speed and by the combination action of wind and wave loads at above rated wind speed.The results should be useful to the detailed design and model basin test of the 6 MW spar-type FOWT.