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1、 论述强新老砼结合的接缝施工措施在目前的施工技术条件下，较大的现浇钢筋砼水池是不行能将砼一次浇筑完成的，必需设置水平施工缝，分阶段进行施工。假如施工缝处理得不好，将很简单引起水池表面凹凸不平，有麻面、上下池壁错开及渗漏水等现象，严峻时将影响运用。而这些毛病完全可以在设计、施工中通过实行一些适当的方法加以避开。Under the condition of the current construction technology, large cast-in-situ reinforced concrete pool is not concrete pouring to be done at a t
2、ime can be completed, you must set up horizontal construction joints, construction in stages. If construction joint treatment well, will easily cause the pool surface is uneven, there are pits and up and down the pool wall stagger and leakage phenomenon, serious when will affect the use. And these p
3、roblems can completely in the design and construction by taking some appropriate methods to avoid them. 2施工缝位置及接缝形式的确定2 construction determined in the form of seam location and seam 现行的砼工程施工规范规定，施工缝的位置宜留在结构受剪力较小且便于施工的部位。对于水池池壁的施工缝，宜留在高出底板表面200500的竖壁上，接缝形式有多种，如凸凹缝、凹凸缝、平缝、设止水带缝等，依据以往的施工阅历，发觉目前常用的几种接缝方
4、式均存在着渗漏水的隐患。如采纳“凹凸 ”型施工缝，其最大弊端在于施工难度大，且很难保证质量，施工缝处砼凿毛时，极易将“凸”楞碰掉一部分，由此削减和缩短了水的爬行坡度和距离，从而产生渗漏水现象；另外凹槽中的水泥砂浆粉未难以清理干净，使在浇筑新砼后，在凹槽处形成一条夹渣层，影响新老砼的粘结质量，留下渗漏水的隐患。而采纳橡胶止水带防水，因止水带是呈柔性的，安装时难于固定，且易在浇注砼时受挤压变形移位，从而简单造成局部渗漏水，而且橡胶止水带易老化失效，也不利于水池的许久运用。Current concrete rules and regulations of engineering constructi
5、on, construction joint shear for the location of the staying in the structure of small and easy to construction sites. For construction joint pool wall, should stay above the base plate surface 200 500 vertical wall and the seams there are many types of forms, such as convex concave slot, high and l
6、ow seam, flat seam, water stop cracks, etc., according to the previous construction experience, found that the current commonly used joint ways there are water leakage hidden trouble. If use bump construction joint type, its disadvantage is that the construction is difficult, and it is difficult to
7、guarantee quality, cut hair, concrete construction joints will stare blankly convex touch of extremely easily, thus reduce and shorten the creep slope and the distance of water, causing the leakage phenomenon; Cement mortar powder is difficult to clean in the groove of the other, made after the new
8、pouring concrete, form a slag layer in grooves, affect the quality of new and old concrete bonding, leakage hidden trouble. And use rubber water-stop waterproof, bailey is a flexible, because of difficult to fixed installation, and easy when pouring concrete by extrusion deformation displacement, th
9、us easy to cause local seepage, and rubber water stop aging failure, also does not favor the pool used for a long time. 依据许多水池施工阅历，发觉采纳400宽、2厚的钢板作为施工缝处的止水带，其防水效果均很好。一是施工便利：将钢板止水带按要求加工成肯定的长度，在液压升降机平台施工现场安装就位后进行搭接焊即可；二是不易变形且便于固定，止水板下部可支承在对拉螺栓上，混凝土输送泵上部用钢筋点焊夹住固定在池壁两侧板支撑系统上；三是施工缝上下止水板均有200高，爬水坡度陡，高度也较大，
10、具有较好的防渗漏效果。According to many pool construction experience, adopt 400 wide, 2 thick water-stop steel as a construction joint, the waterproof effect is good. One is convenient for construction, steel plate water stop according to the request processing into a certain length, after the construction sit
11、e in place of lap welding; 2 it is not easy deformation and easy fixation, water stop plate at the bottom can be supported on the bolt, the upper steel spot welding clamp fixed to the wall on both sides of the plate support system; Three is the construction joint and water stop plate all have 200 hi
12、gh, climbing steep slope, water height is bigger also, has better seepage prevention effect. 3施工缝久模板的安装3 construction joint long template installation 水池施工缝处模板安装质量的好坏，将干脆影响到施工缝处砼浇筑的质量。如何避开吊车池壁模板支撑不牢、垂直度限制不好以及上下模板接触不严密呢？现介绍一水池施工中取得较好效果的模板支撑方法。Pool construction seam template installation quality, will
13、 directly affect the quality of the concrete pouring construction joints. How to avoid the wall formwork supporting, verticality control is not good as well as the top and bottom template dont contact closely? Introduce a pool construction obtains the good effect of formwork support method. 3.1施工缝以下
14、模板的安装3.1 construction joint in the installation of the following template 首先在C10素砼垫层上安设固定三排60608的钢板，间距为1000，一排设在池壁外侧边缘处，用20长45455的角钢与其相焊，这个角钢的作用是限制池壁外侧模板向内侧移动。另二排设在池壁内侧边缘处，用来安装固定角钢支架，同样用20长45455的角钢与其相焊，这样池壁内侧吊模有了支撑点，且又能固定内侧模板而不致外移。对拉螺栓的横向间距一般为700，纵向间距一般为600，这样便于限制池壁的截面尺寸。施工缝以下第一排对拉螺栓的横向间距为350，且应间隔运用
15、，余下的一半用于施工缝以上模板的固定。角钢可以用螺栓固定在模板上，它的作用是可以将施工缝处砼标高抬40左右。这是因为砼的坍落度较大，经振捣棒振捣后，砼分层明显，水泥砂浆和多余的水分被挤上升，简单形成几厘米厚的砂浆层浮在池壁上面；而这层水泥砂浆将在施工缝处表面砼凿毛时一并凿去，这样能较简单凿出砼中的粗骨料。如不设置角钢，刚极有可能凿毛砼表面时，凿不出粗骨料，且表面很难毛糙，影响新老砼的结合，凿深了又将影响止水带的安装质量，所以设置角钢是非常必要的。First on the C10 plain concrete cushion setting fixed three rows 60 x 60 x
16、8 plate, spacing of 1000 , a row in the wall of the lateral edges, with 20 long 45 * 45 x5 Angle and its phase welding, is to restrict the function of the Angle of the lateral wall template to the inside of the mobile. The other two rows in the wall inside edge, used to install a fixed Angle steel support, also with 20 long 45 * 45 x5 Angle and its phase welding, so the wall in
