毕业（论文）
section, shearing stress, trough stress of the door, mound bottom level sectional side direction stress of mound bottom while calculating, analyse result of calculation, is it mix muscle design to go on.
⑵Stress analysis of the baseplate:
Make gate as the boundry, divide baseplate into two part from head to foot, fetch single wide lath analyse in two part central vertical rivers direction separately. Accord to finishing and building one and using the operating mode of an improved variety, calculate the load on function and lath. Including the baseplate conducts oneself with dignity,china, mound and top structure are heavy, raise pressure and uneven to cut strength and is it assign to go to it, France check the watch calculates according to elastic ground roof beam guo, try to get ground and calculation lath each sectional internal force against strength, is it carry on baseplate mix muscle design to analyse.
6.The level gate is designed: ⑴Leaf structure of the door.
①The layout of the structure of leaf of the door:Confirm door leaf various kinds of component structure need, figure and position , Ge Liang and pattern, way of connecting, connection of department, pattern of walking and supporting and roof beam.
②The panel is designed :On the premise of giving full play to the intensity of the panel, design one thickness of panel with rational economy. And check some and crooked intensity of conversion stress with crooked whole of the panel after the girder section is confirmed.
③Level roof beam once, carrying, the botttom roof beam is designed: Adopt the section steel.By the internal force of every component, choose the section of every roof beam, carry on intensity, rigidity checking computation.
④The girder is designed: Confirm girder figure, position, sectional form, the size of section, the section changes, wing reason welding seam design and some steady checking computations of girder.
⑤Vertical roof beam once and horizontal vertical connection department design:Confirm its pattern and position , is calculated and chosen sectional size and intensity checking computations by the internal
10
毕业（论文）
force.
⑥The roof beam is designed:Is it confirm to support to walk roof beam structure patern is according to construct requirement design roof beam, and carry on the intensity to check to its dangerous section.
⑦Walk and support designing: Confirm its structure pattern, size carry on intensity checking compitation.
⑧Lead the device to design: Confirm the inside out, side and walk and support the pattern, the position and way of connecting.
⑨Stagnant water, lifting lug are designed:Confirm the type of the stagnant water and assign the way, is opened door strength to design, hang the axle and board measurement of the lifting lug and carry on checking computations to the intensity of the lifting lug board.
⑵The door trough is buried the component underground.
①Confirm every track pattern of the door trough, the size of section, carry on the intensity to check to the main rail .
②Confirm stagnant water seat and door trough protect the horn component pattern.
③Lock the room device to design in the gate. ⑶Open and room device to design in the gate.
①Calculate and open the strength of the door, comfirm the type of headstok gear, type.
②Calculate and close the strength of the door, should take the project measure to lower the door to check.
③The hoist is designed: Opened door strength and designed the sling.
Key word: Sluice; floodgate room; level gate; prevention of seepage drain
off water and design to defend to disappear; girder
11
毕业（论文）
第一章 水闸枢纽布置
1.1 总体布置
本设计为节制闸，一般跨越河道修建，故又称为拦河闸。它是一种利用闸门进行挡水或泄水的低水头建筑物，既可控制流量又可调节水位。关闭闸门时，它可拦洪蓄水，挡潮或抬高闸前水位；开启闸门时，又可泄洪，排涝或对下游河道或渠道供水。这次我们主要设计修建在平原道上的 节制闸。节制闸一般跨越河道修建。用于枯水期蓄水，抬高水位以及供进水闸取水，洪水期开闸泄洪。在渠系中一般位于支、斗渠分水口稍下游，跨越干、支渠修建也称节制闸。用于抬高干、支渠水位，供支、斗渠取水。
闸址一般应设置在河道直线段上。闸址处于上下游河道直线段长度均不短于5—10倍水面宽度，且不宜小于300m。
坝址选择是水闸规范设计中的一项重要工作，闸址合适与否，不仅涉及到水闸建设的成败，并且关系到整个地区的经济发展，因此对闸址选择的工作应十分重视。
水闸的类型较多，按其任务不同，可分为以下几类;
<1> 进水闸:为了农田灌溉或其他水利事业的需要，进水闸往往建在河道，水库或湖泊的岸边，用于引水灌溉，发电或其他进水需要而控制流量。
<2>节制闸：由于农田灌溉，发电引水或改善航运要求，常需横快河道或渠道修建水闸，以控制闸前水位和过闸流量，这类水闸成为节制闸。河道上的节制闸也也称为拦河闸。在洪水时期，拦河闸还起排泄洪水作用。
<3>挡潮闸：滨海地区的河流都受潮水影响，为了防止海水倒灌而抬高内河水位，常在入海处河口附近修建水闸，即为挡潮闸。涨潮时关闸，防止海水倒灌；当内河水位过高落潮期间开闸排水。挡潮闸的特点，是承受双渣向水头，而且闸门启闭频繁。
<4>排水闸：为使低洼地区大的渍水通过排水渠排入江河或湖泊，常需在排水渠末端设置水闸，这当河道类水闸称为排水闸。排水闸除开闸排水外，在枯水季还可向内引水灌溉；洪水时可关闸挡水，防止外水倒灌，也可蓄水灌溉。特点是：是承受双向水头。
<5>分洪闸：当河道遭遇洪水而对下游可能造成洪灾时，可将部分洪水泄入湖泊或洼地以消减洪峰。在分洪道首部需设置水闸，即为分洪闸。分洪闸常建于河道的一侧，用来将超过下游河道安全泄量的洪水泄入分洪区或分洪道。
<6>冲沙闸（排沙闸）：冲沙闸（排沙闸）建在多泥沙的河流上。用于排除进水闸，节制闸或渠系中沉积的泥沙。此外，还有为排除冰块，漂浮物等而设置的
12
毕业（论文）
排冰闸，排污闸等。
1.1.1水闸位置时应考虑的几个因素
⑴地基条件 是影响水闸总体布置的主要因素之一应尽可能选择土质密实，均匀。压缩性较小和承载能力较大的良好地基。此外，由于闸基土质的抗冲能力直接影响单宽流量的选择和闸后消能防冲设备的设计，而地下水位的高低及承压水的有无对地基的稳定性和施工期的排水措施也有所影响，故在选择闸址时应考虑这些条件。
⑵水流条件 是另一主要因素闸的位置应使进闸和出闸水流平顺，防止上，下游
产生有害的冲刷和淤积。
⑶施工、管理条件 也是闸址选择时要考虑的一个因素要求有足够宽广的施工场
地，并且尽可能使土方工程量最小。当水闸是整个枢纽的一个组成部分时，应就枢
纽工程总体布置做方案比较，得出水闸最优位置，以达到技术上先进与经济上合理
的要求。
1.2 结构布置
1.2.1闸室的结构布置
水闸一般由上有连接段，闸室，下有连接段三部分组成。水闸的主体是闸室，其结构型式是多种多样的，主要取决于泄放水流的方式以及闸门的构造和操作方式。按照闸室的泄流特点分类，可以分为以下几种型式：
1.堰流式闸室
当闸门全开时过闸水流具有自由水面的水闸成为溢流式闸室，也称开敞式闸室。一般堰槛高程较高，挡水高度较小的水闸都采用这种型式，依靠闸门挡水。当闸门全部打开时，水闸的过水面积和泄流量都随水位的抬高而增大，对于需要泄放洪水的拦河闸和分洪闸来说，这是一个很大的优点。
2.孔流式闸室
当闸门全开时，自由水面仍受阻挡，水流只能通过固定洞孔泄入下游，称为孔流式闸室，也成为封闭式闸室。当闸槛高程较低，闸室高度较大，需要泄放或取用底层水流时，常采用这种型式。一般把闸室顶部封闭。例如设置胸墙挡水，底部设置孔口泄水，这样可以减少闸门尺寸。这种泄流方式最适合于冲沙闸的工
13
相关推荐：
loading