【正文】
L a h L?? ? ??? ?? ? ? ? ? ? ? ?? ? ??? ??? ? ??? ? ? ? ? ???? ??? ??Figure 2c represent situation of role of level earthquake, these formulas as follows: ? ?? ?2 2 2 2 21 0 0 1 1 0220 0 1si n c os si n c os 3 si nc os c os c os c os c os aaL h l L LNL h l hl? ? ? ? ? ? ? ??? ? ? ? ? ? ??? ? ?? ? ?? ? ? ?? ?2 2 2 2 21 0 1 1 1203 2 22 2 2 102 1 0 1si n c os si n c os si n si n si n3c os 2 l n c os5 l n c os c os c os c osal h m l m L mmmNn s l ll g h l h l? ? ? ? ? ? ? ?? ? ?? ? ? ? ?? ?? ? ??? ? ? ? ?? ?001 0 0 1 1 0 1 211 0121 0 0 0 11 1 si n c os2 c os 2 c os c os c osaaLLm L L L n L L Lnh LNL l h l h l? ??? ????? ? ? ?? ? ? ???? ? ? ?? ? ? ?????? ? ? 00 0 0 0201 sin2 c osaaLm L L L hLl???????? ? ?????????? ? ?? ?? ? 200 0 010121 0 01 sinsin c os sin c ossin c os c os 2 sin c osaeLm L L L hLmmNl l h?? ? ? ? ?? ? ? ? ?????? ? ?????? ??????? ? ? ? ?? ?001 0 0 1 0 0 1 2 211 11221 0 0 1si n 1 si n c os2 c os 2 c os c os c os si na aLLL L L L m L L LhLhl L h l h? ? ? ??? ? ? ???? ? ? ?? ? ? ???? ? ? ?? ? ? ?????? When vertical seismic calculation required by Seismic Design Parameters It’s calculate formula generally similar as formula 1 to 4 which only need take gravity g as vertical seismic acceleration a. Above formulas apply to right bearings in figure 2 and also to left when exchange data of two plate. As end triangle of Multislope roof ,for simplify and approximate calculation need, we assume two lines distribution load only produced by roof board of several load, IIII crosssection from figure is took to analysis Long trapezoidal plate two’s end triangle, assuming the structure symmetry approximately, take half of structure to establish model (figure 3). Because linked with the end triangular plate3 plane has great lateral stiffness ,therefore assume the model leftist stronghold along the central ponent around which can not be shifted direction. Central Plate vertical stiffness small, in general gravity load of roughly symmetric midpoint only next movement happened possible, Therefore, the model used parallel twolink connection. Wind loading, and the general role of the earthquake in two slope was roughly antisymmetric,so plate model in the central use fixed hinge bearings which allow rotation and transtlateral force to plate 3near the plate beam. Under plate two triangular area is eaves of vertical beams and plates itself along with plane load distribution is function shown in Figure 1 take the variable x as an argument,assume the distance from position of section II to end part is x0s so the slope level length is y0=x0L2/L3,formula 11 to 14 is the value of Vertical triangle of gravity along the x direction arbitrary location of the two load distribution ,where h3 is Slitting vertical thickness of plate 3. ? ?22020c o s 2 1 2 c o sea am k x L h xN L s h v l x?????? ?????? ? ?21 1 121 0 01s in c o s 2 1 2 c o sm k v L h xN l x h x L V? ? ????? ?????? ? ?220 0 0 0 02 2 21 1 0 0m a x 1 12 3 c o sL L a h L L L LN V L h h l a V L L ????? ??? ? ? ??? ???? ???? ? ?2 2 20 1 0 0 0 1 12 2 2 22 0 1 0 01l n 2 3 c o s aL L h l L L LnV s x l h v h L x x l L?? ??? ? ????? ?? As wind load and earthquake effect, sketch could use approximate figure 3b、 3c and use method of structural mechanics to solve But the process is cumbersome and reasonable extent is limited .the wind and earthquake effect is not important pare with the load effect. Moreover, the triangle area is small As approximate calculation, such directuse rectangular plate slope calculation is more convenient and not obvious waste. The method of solve two load distribution of plate three is same as the solution of Long trapezoidal plate area just make the change of x and y、 L2 and L3 in figure actual profile is part IIIIII shown in figure 1 A B C圖4 a圖4 bBD Figure 4 is vertical launch plan and bear load portfolio value of roof ramp shown in Figure 1 to analysis inclined plate and the internal forces of the antibearing column . in the figure hypotenuse is oblique roof equal to strengthen frame, Similar wind ramp truss rod and the next edge portfolio, could form the dark truss system ,while long rectangular plate can be seen as part of thinwalled beams, which could also be seen as truss. Therefore, we called roof boarding the plane formed a thinwalled beamtruss system, in concrete theory, between the truss and the beam have no natural divide . it’s no need hand count accurate internal forces and bearing force to such a joint system, Because on the one hand span more, big bending stiffness structure sensitive to the bearing uneven subsidence and have to stay safe reserves。1 1 1 10 0 1 1 0c o s c o s 38 c o s c o s c o s c o sL AL L m L ALNl h l h l m? ? ? ?? ? ? ????? ? ?? ? ? ?? ?39。 39。 along plane load。 本科畢業(yè)設計 外文文獻及譯文 文獻、資料題目: Structural Design of Reinforced Concrete Sloping Roof 文獻、資料來源: 網(wǎng)絡 文獻、資料發(fā)表(出版)日期: 院 (部): xxx 專 業(yè): xxx 班 級: xxx 姓 名: xxx 學 號: 2020011287 指導教師: xxx 翻譯日期: xxx 外文文獻: Structural Design of Reinforced Concrete Sloping Roof Abstract: This paper point out mon mistakes and problems in actual engineering design according immediately poured reinforced concrete sloping roof especially mon residential brings out layout and design concept use folded plate and arch shell structure in order to reduction or elimination beam and column Layout to reduce costs and expand use function for user of garret . The paper also discussed the need to open the roof holes, windows, and with other design with plex forms . The corresponding simple approximate calculation method and the structure treatment also