The current research points out that for the CFCHS joints the linear extrapolation method can be used for chords,whereas the quadratic extrapolation method must be used for braces.The hot spot stress distributions on the CFCHS joints tend to be more uniform and their SCFs become smaller significantly,compared with the CHS joints.Axial tension on the brace puts the CFCHS joints at a disadvantage,which produces higher SCFs than axial compression.The effects of nondimensional geometric parameters β,τ and γ on SCFs of the chords of the CFCHS joints are basically the same as those of the CHS joints,but for the braces,there is a bit difference in the effects of parameters β,τ and γ between the two kinds of joints.Concrete has the function of improving the CFCHS joint rigidity and then decreasing SCFs which is expected to increase fatigue strength,but concrete strength grade does not exert significant influence on SCFs.

研究表明：CFCHS節(jié)點(diǎn)的熱點(diǎn)應(yīng)力，對(duì)主管可采用線(xiàn)性外推方法91在线综合，對(duì)支管需采用二次外推方法日韩图片精品午夜在线观看免费网站；相比CHS節(jié)點(diǎn)，CFCHS節(jié)點(diǎn)的熱點(diǎn)應(yīng)力分布趨于均勻A级A级黄片一区，SCF顯著減信访繟Ⅴ免费福利视频。籆FCHS節(jié)點(diǎn)支管軸向受拉比受壓不利97人人插人人操，SCF增大欧美性爱网络；CFCHS節(jié)點(diǎn)幾何參數(shù)β，τ影音先锋欧美在线色资源，γ對(duì)主管SCF的影響效應(yīng)與CHS節(jié)點(diǎn)基本一致强暴乱轮视频，但是對(duì)支管SCF的影響效應(yīng)與CHS節(jié)點(diǎn)有些差異；混凝土的作用主要是改善CFCHS節(jié)點(diǎn)剛度欧美激情在线观看A片大电影，從而降低SCF岛国AAAA级午夜在线影院，并預(yù)期可提高疲勞強(qiáng)度，但混凝土自身強(qiáng)度等級(jí)的高低沒(méi)有顯著影響節(jié)點(diǎn)的SCF欧美AAAAAAAAAAAA。

In the experimental study, 12 joints tests are completed, including 5 uniplanar X joints loaded with axial forces, 3 uniplanar X joints loaded with in-plane bending, 4 multiplanar XX-joints loaded with axial forces, with the emphasis on the influence of β and the existence of the out-of-plane braces, of which the multiplanar XX-joints tests is the first experiment project in china.

試驗(yàn)重點(diǎn)研究節(jié)點(diǎn)支主管寬度比β以及平面外支管荷載等因素對(duì)節(jié)點(diǎn)性能的影響免费一级无码婬片A片，共進(jìn)行了3個(gè)足尺方管平面X型受壓節(jié)點(diǎn)，3個(gè)足尺方管平面X型受彎節(jié)點(diǎn)日韩午夜在线观看网站免费下载、2個(gè)方yinyuan国产精品、圓管雜交平面X型受壓節(jié)點(diǎn)和4個(gè)足尺方管空間XX型節(jié)點(diǎn)試驗(yàn)，其中方管空間XX型相貫節(jié)點(diǎn)試驗(yàn)是國(guó)內(nèi)的首次試驗(yàn)欧美A黑人AⅤ精品视频。

At first, the method used the finite element method to design the combination plan of submains and hollow forgings capable of meeting with the requirement of the douches in a micro-irrigation system that the water flux and water-discharging uniformity of the douches be equilibrated, and the pressure heads of the correspondent submain units; next, the parameters of the design and the pressure heads were input into the dynamic programming model and then the optimal combination design of the diameters of various orders of micro-irrigation pipes in the system as well as the pressure heads necessary to operate the system was obtained.

提出了一種基于有限元法和動(dòng)態(tài)規(guī)劃法的微灌系統(tǒng)管網(wǎng)優(yōu)化設(shè)計(jì)方法国产真实迷奸系列，該方法先利用有限元法，設(shè)計(jì)出符合灌水器平均流量和灌水均勻度要求的支管與毛管參數(shù)組合方案国产呦系列久久精品，及相應(yīng)的支管單元操作壓力水頭99最新视频，然后將這些參數(shù)組合與支管單元操作壓力水頭代入動(dòng)態(tài)規(guī)劃模型，即可設(shè)計(jì)出微灌系統(tǒng)各級(jí)管道管徑的最優(yōu)組合方案，并確定微灌系統(tǒng)所需的操作壓力水頭中文字幕视频。

In order to study the influence of the rigidity of unstiffened tubular joints on load-bearing behavior and structural stability,the experimental research on axial rigidity and bending rigidity of the joints was performed,in combination with the practical demands of a steel tubular constructional project.

試驗(yàn)結(jié)果表明日本公共厕所尿尿视频，當(dāng)支管與主管直徑相差較多時(shí)，節(jié)點(diǎn)軸向剛度和抗彎剛度均較弱国产a在无码线精品，節(jié)點(diǎn)的半剛性能對(duì)結(jié)構(gòu)的受力性能尤其是整體穩(wěn)定性的影響不容忽視；當(dāng)支管與主管直徑接近時(shí)人人色人人插人人操，節(jié)點(diǎn)軸向剛度和抗彎剛度均較大影视先锋资源av无码专区，基本能夠滿(mǎn)足節(jié)點(diǎn)剛接的要求

A new designing method for sprinkle-irrigation laterals, in which the spacing of sprinklers can be changed with the outflow of sprinklers along the lateral, is developed.

在傳統(tǒng)的噴灌支管設(shè)計(jì)中，支管上各噴頭等間距布置黄片al区一区二，但是沿支管灌水量不相等自拍日韩精品视频在线播放。為此提出一種實(shí)現(xiàn)沿支管灌水量相等，但允許噴頭間距變化的支管設(shè)計(jì)方法日韩黄片点结进入。

This paper introduces a new process in which the T-outlet flange is formed from the metal main pipe with spe-cial revolving draw equipment,makes certain the shape of prefabricating hole,and presents the simple for-mulas of calcu lating process parameters of hole.

介紹了采用專(zhuān)用的旋拉設(shè)備加工管道T形支管凸緣成型新工藝欧洲美女色黄A片,视频，確定了預(yù)制孔的加工形狀，并給出其簡(jiǎn)化的工藝尺寸參數(shù)計(jì)算公式99在线视频精品，分析了旋拉設(shè)備主軸轉(zhuǎn)速要求伊人91无码在线、進(jìn)給量參數(shù)及采用溫拉時(shí)加熱溫度的確定方法，旋拉支管凸緣的金屬性能等泰国一级牲交片。

Drainage system Design of drainage system is it discharge way drain off water the sureness of the system to include; Calculation of the flow of second of design of the sanitary sewage drainage pipeline of the building ; Is it in charge of sideways to drain off water , water conservancy in charge ofed to set up calculate and in charge of pipeline slope , pipe diameter and sureness of elevation sideways, set up calculation to in charge of pipe diameter , is it confirm pipe diameter size and position and sewage waste water design of the inspection shaft after discharging of breather pipe to come from this.

消火栓給水系統(tǒng)消火栓給水系統(tǒng)的設(shè)計(jì)內(nèi)容具體包括：根據(jù)建筑物性質(zhì)選擇設(shè)計(jì)參數(shù)天天舔天天日天天射，包括每支水槍的射流量、消火栓的口徑欧美激情性A片三p、水槍口徑日韩欧美强迫视频网、龍帶長(zhǎng)度等；消火栓系統(tǒng)計(jì)算最新国模吧，具體包括消火栓的布置計(jì)算和消防立管和橫支管的水力計(jì)算久久精品性；減壓孔板的計(jì)算；消火栓設(shè)施的確定免费黄色强奸A片，包括水泵結(jié)合起的設(shè)置日韩黄色无码黄色、消防水泵和泵房的要求。

In total, 13000 plastic footballers, 540 tubes of superglue and 50 tubes of plastic glue were used to create the series of works.

總共加勒比视频官网， 13000個(gè)塑料足球運(yùn)動(dòng)員精品国产污网站在线观看、superglue 540支管和塑料膠漿50支管使用創(chuàng)造工作系列。附件：您所在的用戶(hù)組無(wú)法下載或查看附件

The two sides of main worktable is equipped with two suits of self-center with T grooves, three-paw plate.(one suit can move within 12m drived by a motor) Thus it ensures the flange is vertical with pipe, and accurant location with flange connection screw hole

該機(jī)主工作臺(tái)兩端裝有兩套帶T型槽的自定心91精品啪在线国产，三或四爪卡盤(pán)日韩一区二区三区在线观看，（其中一套由電機(jī)托動(dòng)可在12米工作范圍內(nèi)自由移動(dòng)），可保證法蘭與管的垂直啪啪啪一区.com，法蘭聯(lián)接螺孔的準(zhǔn)確對(duì)位及支管位置支管法蘭的準(zhǔn)確對(duì)位你懂得福利影院。

The two sides of main worktable is equipped with two suits of self-center with T grooves, three-paw plate.(one suit can move within 12m drived by a motor) Thus it ensures the flange is vertical with pipe, and accurant location with flange conne

該機(jī)主工作臺(tái)兩端裝有兩套帶T型槽的自定心，三或四爪卡盤(pán)，（其中一套由電機(jī)托動(dòng)可在12米工作范圍內(nèi)自由移動(dòng)）又长又大又粗又硬黄色网站，可保證法蘭與管的垂直久久国产精品首页久久久精品，法蘭聯(lián)接螺孔的準(zhǔn)確對(duì)位及支管位置支管法蘭的準(zhǔn)確對(duì)位。