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1、精选优质文档-倾情为你奉上钢结构厂房地脚螺栓的埋置方法The embedding of anchor bolts on the steel structure factory building 地脚螺栓的埋置是钢结构厂房施工的一大关键，直接影响到上部钢结构厂房的垂直度，方正度。若地脚螺栓的埋置偏差过大，则会对后期的上部施工中的结构螺栓，檩条螺栓，围梁螺栓的连接等造成很大的困难。在施工过程中，我们要着重控制地脚螺栓的平面位置，垂直度及螺栓钉标高，以尽可能减少上述误差。 For direct influence on the perpendicularity and square, the emb
2、edding of anchor bolts is one of the most important points during the construction of steel structure building. There would be great difficulties in working on structural bolts, purline bolts, and girt bolts if there is any declination in embedding the anchor bolts. During construction, the great em
3、phasis should be placed on the horizontal position, prependicularity and elevation of bolts in order to reduce such declination to the least.要求：平面位置误差：3mm，螺栓顶标高误差：3mmBasic requirements:Horizontal position declination: 3mmAnchor bolts top elevation declination: 3mm1 须配备的设备，工具及施工人员： Working staff, Nec
4、essary equipment and Tools:1.1 设备及工具：Equipment and tools:光学水准仪及脚架，标尺 1套Optical water level & horse and staff guage 1 光学经纬仪及脚架，花插 1套Optical theodolite, horse & flower brace 1 50m以上钢尺 1把Steel rule (over 50m) 13m5m钢尺 2把Steel rule (3-5m) 2线锤 1只Thread hammer 1模线 若干Module string some铁锤 1把Hammer 1定位界椿 若干Or
5、ientation marker some电焊机 1台Electric welding machine 1水平靠尺（高精度） 1把Leveling guiding rule (High precision) 11.2 施工人员：Working staff有经验的测量工程师 1人Well-experienced meterage engineer 1钢筋工 1人Reinforcing steel bar worker 1电焊工 1人Electric welder 1木工 1人Carpenter 1辅助工 2人Assistant 2 2板样定位及水准点： Model orientation and
6、 Standard Leveling Point2.1 板样定位： Model Orientation:根据图纸要求，对施工现场进行放样，定位。在所有建筑物的角点，必须设立横向，纵向两个控制界柱，并采取适当的加固措施，避免控制界椿在施工过程中遭破坏，所有横向，纵向轴线均设立相对固定的定位椿。所有定位椿的顶标高尽量控制在0000上1020cm，以便日后拉模线，拉尺丈量复核。定位界椿设立之后，应采取反方向闭合测量，修正成果，以减少平面误差To locate the position and lofting on the job site according to the drawing. Both
7、 transverse and lengthways controlling boundary column should be embedded at the corner of every building, the corresponding consolidating measures also should be taken so as to prevent the controlling boundary column from damaging during the erection. The top elevation of fixed location boundary ma
8、rker on both transverse and lengthways axises should be controlled between 10-20cm on +0.00, which would be more convenient for the re-measurement in the future. After the embedding of position fixed boundary marker, opposite closing measure should be taken to adjust the works, in order to reduce th
9、e inaccuracy on plane level. 2.2 水准点： Leveling point水准点的设立同样相当重要，它直接影响到地脚螺栓顶部标高的控制。建议沿建筑物周边每40m左右设立一个临时水准点。同样，临时水准点设立后，亦须经过闭合测量。 Considering its direct influence on controlling the top elevation of anchor bolts, the establishment of leveling point is also a very important procedure. We suggest you s
10、et a temporary level point every 40m around the building. Same as the above procedure, closing measure is also required after the establishment.3 地脚螺栓的埋置及准备工作： Preparation and embedding of anchor bolts3.1 地脚螺栓套板的加工： The process of anchor bolts cleading 地脚螺栓的套板，其尺寸及套板上的开孔与日后上部结构中柱脚底板的尺寸及开孔相一致。套板应采用不小
11、于20mm厚的木板，根据节点详图所规定的尺寸及开孔位置进行加工。开孔直径应比地脚螺栓直径大2mm为宜。同时，套板面须用醒目标志标出，纵横轴线穿过该组地脚螺栓的具体位置，以便日后复核。The size of the anchor bolt cleading and the aperture therein should be identical with that of the base plate in the upside structure. Such cleading should adopt the wood board no less than 20mm and be process
12、ed according to the size and aperture position stated in the specific graphics. It would be better if the diameter of aperture is 2mm bigger than that of anchor bolts. At the same time, the cleading surface should be lined out by distinct sign with the transverse and lengthways axis through the posi
13、tion of anchor bolts in the same group, so as to facilitate the re-check in the future.3.2 地脚螺栓的埋置： The embedding of anchor bolts:基础钢筋开始施工时，地脚螺栓埋置工作也应同时开始，穿插进行。埋设地脚螺栓前，先应用模线放出相应的纵，横向轴线，同时用钢尺在基础钢筋上放出每组地脚螺栓的位置。埋置地脚螺栓时，先将地脚螺栓套板平放在基础钢筋上相应位置，用线锤测定校正纵，横轴线与套板上标出的纵，横向轴线标志，沿套板周边在钢筋上作出标记。将地脚螺栓的螺杆由下至上穿过套板，在螺杆上
14、拧上相应的螺母,通过螺母的松紧，调节地脚螺栓的顶部标高，用水准仪测量控制螺栓顶标高,直到图纸要求相符合为止。在施工过程中，用水平尺检测套板及螺杆，尽量使套板面处于水平状态，螺杆处于垂直状态。套板及螺杆就位后，须用经纬仪进行复核。将经纬仪架立在需复核的地脚螺栓的轴线控制点上, 目镜瞄准远端该轴线的另一控制点, 确定目镜中十字丝中心，即为该轴线位置，然后复核位于该轴线上的每组地脚螺栓与轴线位置关系是否准确，并修正成果。注意，经纬仪复核必须纵，横两个方向进行，切忌只复核一个方向而忽略另一方向。The working of reinforcing bar and embedding of anchor
15、 bolts should begin at the same time. Before the embedding. both axises should first be confirmed, than using metal ruler to measure the location of each anchor bolts on the reinforcing bar. While embedding plate should levelly put on the corresponding place on reinforcing bar. Then marked out the a
16、xises both originally measured and that on the plate by using thread awl. than penetrate the plate from undersurface to upper surface , and screw on the cap. At last, adjust the top elevation and measure at the same time until it reaches the requirement of paper. During the construction, leveling gu
17、iding ruler should be used to make sure that whether the cleadings are level. And screws are vertical. Than put the theadolite on the axies controlling point of anchor bolts to reporting the accuracy. Remember, the reproofing process should be actualized on both orientation.3.3 地脚螺栓的固定： The fixup of
18、 anchor bolts:在上述工序完成并修正成果后，须对地脚螺栓作固定。具体固定方法如下：每组螺栓的各螺杆间用8钢筋焊接连接。螺杆下部能与基础钢筋连接的部分尽量采取电焊可靠连接，以确保地脚螺栓位置的准确性。在焊接前应用水平靠尺检测螺杆的垂直度，尽可能使螺杆处于垂直状态。焊接工作完成后，松开套板上的螺母, 使螺栓套板的底部距基础面钢筋30mm 左右，同时将混凝土保护层垫块置于套板底部与钢筋之间，用水平尺调整套板使之尽可能处于水平状态，将上部螺杆上的螺母带紧。After completion and modification of the project above, we should fa
19、sten the anchor bolts in the way as following:Every group of anchor bolts should be linked by 8 reinforcing steel bar through welding. The connective part between the downside part of screws and reforming steel bar should also be electric-welded in order to guarantee the accuracy of anchor bolts s l
20、ocation. The examination of screws perpendecularity by water level rod is necessary prior to welding, so as to make sure the screw is in the vertical state. Then to loosen the screw cap on the cleading after the welding work, so that the distance between the bottom of the anchor screw cleading and h
21、e surface of enforcing steel bar is controlled within 30mm or so, therefore the concrete protective block can be filled in such gap at the same time. It is preferable to adjust the level position of cleading by using leveling guiding ruler and tighten the concrete block by upside screw. cap.4 混凝土浇筑时
22、的注意事项： Important items in concreting:浇筑混凝土前，螺栓套板上部的螺杆及螺母须抹上黄油后用塑料布包裹并用铁丝扎紧。浇筑混凝土，特别是采取泵送混凝土施工时，须避免混凝土的挤压，导致地脚螺栓走位。混凝土泵管应避免直接对着地脚螺栓浇筑，尽可能在地脚螺栓及周边30cm范围内采取人工布料。在使用振动棒时，切勿在上述区域内振动过频。在浇筑混凝土时，施工人员须加强对地脚螺栓的监测，用水准仪，经纬仪随时对各组地脚螺栓（特别是周围正进行浇筑混凝土的地脚螺栓）的复核。一旦发现偏差，应立刻进行校正。Before concreting, parts of the screws an
23、d caps which above the bolt cleading should be packed by plastic cloth with solid butter inside, and the plastic cloth should be tightened up by steel wire. While concreting, especially in using pumps effective measures should be taken to prevent the dislocation of anchor bolts from concrete by sque
24、ezing. Pump tubes should not directly concrete on the anchor bolts, and in 30cm range surrounding the bolt, it is better to concrete by band. When using vibration club. We shall make sure that frequency is normal. Water level and theadolite should be used to re-check the anchor bolts in different gr
25、oups. With earnest monitor on the anchor bolts exerted by staff on site, if the deviation found, modification should be done in time.5 地脚螺栓的保养及纠偏： The maintenance and rectification of anchor bolts混凝土终凝后，应立即拆除地脚螺栓套板，并在地脚螺栓周边30cm的范围内，用高强度水泥砂浆找平至设计要求的标高。所有柱底标高的误差不能大于3mm。待砂浆干硬后，即用经纬仪定位，放线后，复核地脚螺栓的位置，对于偏
26、差大于3mm的地脚螺栓须纠正偏差。具体方法为：将螺杆上的丝牙用软布包裹多层，用2m左右的空心钢管套入后向正确的位置方向纠正。注意不能用力过猛，以免将螺栓扳断。所有螺栓经复核后，若在短时间内不进行上部结构的安装，须在螺纹上涂上固体黄油，用塑料纸包裹并用铁丝扎紧。After the solidification of concrete, the anchor bolts cleading can be dismantled. Then high intensity concrete grit slurry can be employed to level up the area of 30cm s
27、urrounding the anchor bolts, until reaching the designed elevation. The elevation deviation should be no more than +3mm. After the solidification of grit slurry, the theodolite will be used in orientation and re-check the position of the anchor bolt. In case of the deviation of over 3mm in anchor bo
28、lts, it should be modified in the way as following: Firstly to use the soft fabric to wrap the screw thread on the screw in multilayer, secondly to modify it toward the right direction after thrusting the 2-meter hollow steel pipe, with attention that no intense force is allowed to avoid the breakage of bolts. After all the bolts going through the re-check, if no installation of upside structure will occur in short period, the screw thread should be wiped with solid butter, wrapped by plastic paper and tightened up by iron wire.专心-专注-专业