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首页-新闻资讯-拉森钢板桩接长的焊接要求有哪些?

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来源:http://www.jnlsgbz.com/ 日期:2020-09-09 发布人:lasen
  目前拉森钢板桩的长度有6米,9米,12米,15米,18米等比较常见的拉森钢板桩,当然也能制作出更长的拉森钢板桩,但是如果拉森钢板桩长度过长的话,在运输中又会成为问题。因此我们在一些大型的拉森钢板桩围堰中需要用到超过20多米长的拉森钢板桩一般是采用拉森钢板桩接长焊接,而下面我们要讲到的则是关于拉森钢板桩接长焊接的要求有哪些?一起来看看吧。
  At present, the length of Larsen steel sheet pile is 6 meters, 9 meters, 12 meters, 15 meters, 18 meters and other common Larsen steel sheet piles. Of course, longer Larsen steel sheet piles can be made, but if the length of Larsen steel sheet pile is too long, it will become a problem in transportation. Therefore, we need to use Larsen steel sheet pile with a length of more than 20 meters in some large Larsen steel sheet pile cofferdams. Generally, Larsen steel sheet pile extension welding is used. What are the requirements for Larsen steel sheet pile extension and welding? Let's have a look.
  1、拉森 钢板桩对接焊接一般为二根或三根拉森钢板桩为一组对接, 必须保证每组拉森钢板桩同宽度,锁口平直并平行,不扭曲,拉森钢板桩不弯曲或突变。
  1. Generally, the butt welding of Larsen steel sheet piles is two or three Larsen steel sheet piles as a group. It must be ensured that each group of Larsen steel sheet piles has the same width, the lock mouth is straight and parallel, without twist, and Larsen steel sheet pile is not bent or mutated.
                钢板桩施工租赁
  2、在工地现场制作胎架,使各胎架必须垂直且在同一水平面上;3、拉森钢板桩焊接后长度不得短于施工要求,并且一根焊接后的拉森钢板桩上不得多于三个接头;4、拉森钢板桩焊接材料的焙烘、保管及使用,按《焊接材料保管要求》执行;5、拉森钢板桩接长焊接长度对接后,施工的时候要保证焊接接头上下错开,减少整体受力在同一处接头的风险。比如焊接后是30米长的拉森钢板桩,要让焊接接头一根14m段在上,一根16m段在上,就错开了接头处。如果拉森钢板桩接长焊接接头都在同一个位置,容易导致下半部分的拉森钢板桩因接头处整体断裂或变形无法拔出。
  2. The jig frame shall be made on the construction site so that each jig frame must be vertical and on the same horizontal plane; 3. The length of Larsen steel sheet pile after welding shall not be shorter than the construction requirements, and there shall be no more than three joints on one Larsen steel sheet pile after welding; 4. Baking, storage and use of welding materials for Larsen steel sheet pile shall be carried out according to the requirements for storage of welding materials; 5. Lengthening and welding of Larsen steel sheet pile After the length butt joint, the welding joint should be staggered during construction to reduce the risk of overall stress in the same joint. For example, if the 30 meter long Larsen steel sheet pile is welded, the joints will be staggered if one 14m section is on the upper part and the other is 16m section. If the extension welding joints of Larsen steel sheet pile are all in the same position, it is easy to cause that the lower part of Larsen steel sheet pile cannot be pulled out due to the overall fracture or deformation of the joint.
  6、拉森钢板桩接长焊接前,必须用砂轮机对焊接坡口及坡口两侧各宽 20mm 范围内,角焊缝在焊接宽度方向两侧各宽 20mm 内,清 除氧化物,水份,油污、泥土等。
  6. Before the extension welding of Larsen steel sheet pile, the grinding machine must be used to remove the oxide, moisture, oil, soil, etc. of the welding groove and the width of both sides of the groove within 20 mm, and the fillet weld is within 20 mm in the direction of welding width.
  7、拉森钢板桩对接时,调直是个关键工序,钢板桩平直偏差控 制在 0.1%范围内;8、加强板采用船板,长 500*宽 200*厚(14-18)mm 韩通废板堆场的废船板,每一道对接头,用四块加强板,正反面各二块;9、拉森钢板桩对接缝双面焊接,锁口部位避开不用焊接,钢板 桩焊接结束后,必须对所焊的焊缝,敲清焊渣及焊缝周围的飞溅,并用砂轮机打磨光滑,检查焊缝外表质量是否符合验收质量要求。达到要求后再焊接加强板,加强板四面满焊后,敲清焊渣及焊缝周围的飞溅,再检查焊缝外表质量是否符合验收质量要求。
  7. During the butt joint of Larsen steel sheet pile, straightening is a key process, and the straightness deviation of steel sheet pile shall be controlled within 0.1%; 8. Ship plate shall be used for reinforcing plate, with length of 500 * width of 200 * thickness of (14-18) mm; four reinforcing plates shall be used for each pair of joint, two for front and back sides; 9. Double side welding shall be conducted for the butt joint of Larsen steel sheet pile, and the lock position shall be avoided without welding After the pile welding is completed, the welding slag and spatter around the weld must be removed, and the grinding machine shall be used to smooth the welding seam, and the appearance quality of the weld joint shall be checked to see whether it meets the acceptance quality requirements. After the requirements are met, the reinforcing plate shall be welded again. After the four sides of the reinforcing plate are fully welded, the welding slag and spatter around the weld shall be knocked out, and then the appearance quality of the weld shall be checked to see whether it meets the acceptance quality requirements.
  10、接长焊接好之后的拉森钢板桩堆放五根为一组,桩与桩之间用小木块垫好,保证水平。
  10. After the lengthening and welding, five Larsen steel sheet piles are stacked as a group, and the piles are padded with small wooden blocks to ensure the level.
 
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