基于VC＋＋的超声波混凝土厚度检测软件的设计与实现

为检测混凝土厚度,研发了基于Windows平台的超声数据分析软件,并根据用户需求设计系统架构和模块功能,以提高软件的可靠性和易用性。该软件采用自定义数据格式,利用多种数字信号处理方法对原始数据进行分析处理,当发射器有效地监测到反射波时,软件根据收集到的数据计算出混凝土厚度。     

干燥大温差条件下混凝土界面过渡区的研究

采用显微硬度仪和扫描电镜,对比研究了干燥大温差气候条件和标准养护条件下混凝土界面过渡区的结构和形态.研究表明:干燥大温差环境使混凝土界面过渡区的宽度增加,显微硬度降低,过渡区水化产物结构疏松,孔隙率高,与骨料的粘结减弱,有明显的微裂缝产生.界面过渡区的劣化是造成混凝土宏观,性能下降的内在原因之一.因此,又分析了界面过渡区劣化的原因.     

Ultranarrow Bandwidth Organic Photodiodes by Exchange Narrowing in Merocyanine H‐ and J‐Aggregate Excitonic Systems

Ultranarrowband organic photodiodes (OPDs) are demonstrated for thin film solid state materials composed of tightly packed dipolar merocyanine dyes. For these dyes the packing arrangement can be controlled by the bulkiness of the donor substituent, leading to either strong H‐ or strong J‐type exciton coupling in the interesting blue (H‐aggregate) and NIR (J‐aggregate) spectral ranges. Both bands are shown to arise from one single exciton band according to fluorescence measurements and are not just a mere consequence of different polymorphs within the same thin film. By fabrication of organic thin‐film transistors, these dyes are demonstrated to exhibit hole transport behavior in spin‐coated thin films. Moreover, when used as organic photodiodes in planar heterojunctions with C₆₀ fullerene, they show wavelength‐selective photocurrents in the solid state with maximum external quantum efficiencies of up to 11% and ultranarrow bandwidths down to 30 nm. Thereby, narrowing the linewidths of optoelectronic functional materials by exciton coupling provides a powerful approach to produce ultranarrowband organic photodiodes.     

基于信捷PLC对细石混凝土泵电气系统的设计

为了推进细石混凝土泵的国产化,在保证产品性能的前提下,降低其电气系统的生产成本,采用以国产信捷PLC(Programmable Logic Controller)为主的控制元件对细石混凝土泵电气系统进行了设计。在保证细石混凝土泵使用稳定性的同时,降低了其电气系统的制造成本,提高了适用性。所设计电气系统经菏泽永安机械制造有限公司检验使用,实际应用情况良好。     

地下高压管道的联合承压计算

本文推导了地下高压管道中钢衬、衬砌混凝土和围岩在施加内压的各个阶段中应力和位移的计算公式，这些公式适用于不同层间缝隙以及衬砌混凝土与围岩存在不同径向裂缝的情况，亦可应用这些公式计算混凝土与围岩产生径向裂缝时的临界内水压力和裂缝的开裂区半径，与同类计算公式相比，其精确性更高，适用性更广。     

二滩拱坝混凝土设计及试验研究

二滩水电站混凝土双曲拱坝，坝高２４０ｍ，是我国已建和在建的第一高坝。根据拱坝应力状况，仿真试验试件尺寸，二向、三向轴受力状况混凝土的力学变形特性，建立了相应的方程式。二滩拱坝混凝土强度设计龄期为１８０ｄ，抗渗标号不小于Ｓ１２，抗冻标号选用Ｄ２００，胶材用量不超过２００ｋｇ／ｍ３，也不少于１７０ｋｇ／ｍ３，粉煤灰掺量控制在３０％以内，Ａ、Ｂ、Ｃ三区混凝土强度分别采用３５、３０、２５ＭＰａ。经试验和复核，大坝混凝土强度的安全系数是完全足够的。     

莲花面板堆石坝填筑施工组织设计

莲花面板堆石坝填筑施工中，注意对筑坝料源做出符合工程实际情况的规划：利用其他建筑物的开挖料降低造价；采用分区填筑的措施，加快施工进度和解决寒冷季节施工问题；方便的上坝交通道路网和良好的路面，为高强度填筑提供有力保证；选择合理配套的施工设备使设备得到优化利用。     

钢筋网及钢筋混凝土电磁脉冲屏蔽效能研究

采用ＦＤＴＤ法和ＭＰＭＬ吸收处界条件,对无限大钢筋网、钢筋混凝土层和素混送终凝土层的电磁脉冲屏蔽效能进行了时域全波分析。得出了典型结构尺寸钢筋网的电磁脉冲屏蔽效能及其随测点位置变化的规律,并对混凝土层的屏蔽效能以及钢筋交叉点焊接与否对钢筋网电磁脉冲屏蔽效能的影响进行了讨论。通过不同规格钢筋网屏蔽室模型和钢筋混凝土屏蔽室模型的电磁脉冲模拟试验,研究了钢筋粗细、间隔、钢筋交叉点焊接还是绑扎,有否浇筑混     

2万g量程压阻式加速度传感器的非线性研究

在弹体侵彻混凝土的实验过程中,由于压阻式加速度传感器具有零漂、外围电路简单、抗过载能力强等优点,成为高量程微加速度计设计的首选,因此我们采用压阻式加速度传感器,通过采用弹载存储测试技术,记录弹体膛内及侵彻过程中的实时加速度,分析了实测的加速度曲线,膛内及侵彻速度曲线,侵彻深度.发现了加速度传感器非线性问题,在马歇特锤上...     

Molecularly Engineered Hierarchical Nanodisc from Antiparallel J-stacked BODIPY Conjugates: Application to Theranostics with Mutually Beneficial Properties

The J-aggregation of dye-functional group conjugates, which results in intriguing photophysical properties and highly ordered structures, has several advantages over that of monomeric dyes and exhibits augmented performance compared to that of monomeric functional groups, thereby providing a novel platform for devising materials with advanced functions. Herein, it is reported that a molecularly engineered nanodisc by the antiparallel J-aggregation of halogenated BODIPY-Gd(III), a dye-functional group conjugate. The highly directional halogen-bonding interactions enable a unique antiparallel J-stacking of BODIPY-Gd(III), resulting in an alternating, orderly arrangement of the functional Gd(III) groups on the surfaces of the nanodisc, and allowing water stability and an enhanced magnetic resonance signal. Moreover, the J-stacked dyes render the nanodisc with excellent photothermal performance, such as intense NIR-absorptivity, high photothermal conversion efficiency, and a nearly non-photobleaching capability. Preliminary in vivo studies demonstrated the potential of the nanodisc as an efficient bimodal photoacoustic and high-performing magnetic resonance imaging, and antitumor photothermal therapy agent. This conceptual work not only establishes a general strategy for nano-J-aggregates with desired dye arrangement, controlled size, and in vivo stability, but also advances the antiparallel J-aggregation of dye-functional group conjugates as a potential platform for multifunctional integration and modulation, wherein multiple functional groups and BODIPYs can be installed.