泊头市卓远机械设备制造有限公司

地脚螺栓常用的型号以及安装方法

地脚螺栓一般用Q235钢，即为光圆的。地脚螺栓螺纹钢（Q345）强度大，做螺母的丝扣没有光圆的容易。对于光圆地脚螺栓而言，埋深一般为其直径的25倍，然后做一个120mm左右长的90度弯钩。地脚螺栓的抗拉能力就是圆钢本身的抗拉能力了，大小等于截面面积乘以抗拉强度设计值（140mpa）就是设计时的允许抗拉承载力。地脚螺栓一般用Q235钢，即为光圆的。目前没见过用螺纹的情况，不过要是受力需要的话也未尝不可。螺纹钢（Q345）强度大，做螺母的丝扣没有光圆的容易。

对于光圆地脚螺栓而言，埋深一般为其直径的25倍，然后做一个120mm左右长的90度弯钩。如果螺栓直径很大（如45mm）埋深太深的话，可以在螺栓端部焊方板，即做一个大头就可以了（不过也是有一定要求的）。埋深和弯钩都是为了保证螺栓与基础的摩擦力，不至于使螺栓发生拔出破坏。所以，地脚螺栓的抗拉能力就是圆钢本身的抗拉能力了，大小等于截面面积乘以抗拉强度值（140mpa）就是设计时的允许抗拉承载力。

常用的地脚螺栓的型号有：

六角头螺栓GB/T5782-2000十字槽盘头自攻螺钉GB845-85

标准型弹簧垫圈GB93-87十字槽沉头自攻螺钉GB846-85

六角头螺栓全螺纹GB/T5783-2000六方螺母C级GB/T41-2000

内六角圆柱头螺钉GB/T70.1-2000方头螺栓C级GB8-88 

1、一次埋入法：浇灌混凝土时，将地脚螺栓埋入。当高塔等以倾覆控制时，地脚螺栓宜采用一次埋入法。

2、预留孔法：设备就位，将孔洞打扫干净，将地脚螺栓放入孔中，设备定位找正后再用比原基础高一级的无收缩细石混凝土进行浇灌，捣固密实。一次埋入之地脚螺栓中心至基础边缘的距离不应小于2d（d为地脚螺栓直径），且不应小于15mm（d≤20时不应小于10mm），并不小于锚板宽度的一半加50mm，当不能满足上述要求时，应采取适当措施，予以加强。结构用的地脚螺栓直径不宜小于20mm。当承受地震作用时，应采用双螺母固定，或采用其它有效防止松动的措施，但地脚螺栓的锚固长度应比非地震作用的锚固长度增加5d。

地脚螺栓的安装规划 地脚螺栓在基础内松动的处理在近拧紧地脚螺栓时，可能将螺栓拔活，此时应先螺栓调整至原位置，并将螺栓周围的基础铲出足够的位置，然后在螺栓上焊纵横两个U形钢筋，最后用水将坑内清洗干净并灌浆，待混凝土凝固到设计强度后再拧紧活地脚螺栓偏差的处理活地脚螺栓偏差的处理方法，大致与死地脚螺栓的方法相同，只是可以将地脚螺栓拔出来处理。如螺栓过长，可在机床上切去一段再套螺纹；如螺栓过短，可用热锻法伸长；如位置不符，用弯曲法矫正。

应用行业适用于各种设备固定、钢结构基础预埋件、路灯、交通指示牌、泵、锅炉安装、重型设备预埋固定等。 

我公司目前主要的加工设备有8000mm×3000mm龙门铣床2台、10000mm×3000mm龙门刨床1台、6000mm×3000mm龙门刨床2台、6000mm×2000mm龙门刨床1台、4000mm×1500mm龙门刨床1台、大型摇臂钻4台以及其它小型设备共计数十台套。

公司按照市场经济规律规范动作，法人治理结构齐全，运行机制灵活，组织结构按照“以市场为导向，以销售为龙头”的要求构建，两头在外，中间精干。公司注重严格管理，拥有一支高素质的员工队伍。公司建有全面应用计算机辅助设计和三维运动仿真、有限元分析等手段的设计系统，计量检测手段先进齐全，质量体系完善，已通过ISO9001质量体系的认证，公司能够为用户提供优质的产品和满意的服务。

The anchor bolts are generally made of Q235 steel, which is light round. The anchor bolt rebar (Q345) has a high strength, and the thread of the nut does not have a light circle. For light round anchor bolts, the buried depth is generally 25 times its diameter, and then a 90 degree hook of about 120 mm length is made. The tensile strength of the anchor bolt is the tensile strength of the round steel itself. The size equal to the cross-sectional area multiplied by the tensile strength design value (140mpa) is the allowable tensile capacity of the design. The anchor bolts are generally made of Q235 steel, which is light round. I haven't seen threading at the moment, but it's not a bad idea if you need it. The strength of the rebar (Q345) is large, and the thread of the nut is not easy to be round.

For light round anchor bolts, the buried depth is generally 25 times its diameter, and then a 90 degree hook of about 120 mm length is made. If the bolt has a large diameter (such as 45mm) and the depth is too deep, you can weld the square plate at the end of the bolt, that is, you can make a big head (but there are certain requirements). Both the depth of the burial and the hooks are used to ensure the friction between the bolt and the foundation, so that the bolts are not pulled out. Therefore, the tensile strength of the anchor bolt is the tensile strength of the round steel itself. The size equal to the cross-sectional area multiplied by the tensile strength value (140mpa) is the allowable tensile capacity of the design.

Commonly used anchor bolts are:

Hex head bolt GB/T5782-2000 cross slot pan head tapping screw GB845-85

Standard spring washer GB93-87 cross recessed countersunk head tapping screw GB846-85

Hex head bolt full thread GB/T5783-2000 hexagonal nut C grade GB/T41-2000

Hexagon socket head cap screw GB/T70.1-2000 square head bolt C grade GB8-88

1. One-time embedding method: When pouring concrete, embed the anchor bolts. When the tower is controlled by the overturning, the anchor bolt should adopt the one-time embedding method.

2. Reserved hole method: the equipment is in place, the hole is cleaned, the anchor bolt is placed in the hole, and the equipment is positioned and corrected, and then the non-shrinking fine stone concrete higher than the original foundation is used for watering, tamping and compacting. . The distance from the center of the anchor bolt to the edge of the foundation shall not be less than 2d (d is the diameter of the anchor bolt), and shall not be less than 15mm (not less than 10mm when d≤20), not less than half of the width of the anchor plate. Add 50mm. When the above requirements are not met, appropriate measures should be taken to strengthen them. The diameter of the anchor bolts used for the structure should not be less than 20mm. When subjected to earthquakes, double nuts should be used, or other measures to prevent loosening should be used, but the anchor bolts should be anchored for 5 days longer than the non-seismic anchor lengths.

Installation of the anchor bolts The loosening of the anchor bolts in the foundation may loosen the bolts when the anchor bolts are tightened. In this case, the bolts should be adjusted to the original position and the foundation around the bolts should be scooped out enough. Then, the two U-shaped steel bars are welded vertically and horizontally on the bolts. Finally, the pits are cleaned and grouted with water, and the concrete is solidified to the design strength, and then the handle of the live-foot bolts is tightened to handle the deviation of the live-foot bolts. The bolts are the same, except that the anchor bolts can be pulled out. If the bolt is too long, a piece of thread can be cut on the machine tool; if the bolt is too short, it can be extended by hot forging; if the position is not consistent, it can be corrected by bending method.

The application industry is suitable for various equipment fixing, steel structure foundation embedded parts, street lamps, traffic signs, pumps, boiler installation, heavy equipment pre-buried and fixed.

The main processing equipment of our company currently has 2 sets of 8000mm×3000mm gantry milling machines, 1 set of 10000mm×3000mm planer, 2 sets of 6000mm×3000mm planer, 1 set of 6000mm×2000mm planer, 1 set of 4000mm×1500mm planer, large shake. A total of ten sets of arm drills and other small equipment were counted.

The company regulates its actions in accordance with the laws of the market economy. The corporate governance structure is complete, the operating mechanism is flexible, and the organizational structure is constructed in accordance with the requirements of “market-oriented, sales-oriented”, with two heads in the middle and the middle in the middle. The company pays attention to strict management and has a high-quality staff team. The company has a design system that comprehensively applies computer-aided design and three-dimensional motion simulation and finite element analysis. The measurement and detection methods are advanced and complete, and the quality system is perfect. It has passed the ISO9001 quality system certification, and the company can provide users with high-quality products and satisfaction. Service.

Company name: botou zhuoyuan mechanical equipment manufacturing co.,LTD
Registered address: jiaohe development zone, botou city, hebei province
Fax number: 0317-8031093
Contact information: 15369812793 (WeChat with the same number)  liansheng chu
Postcode: 062151
Enterprise email:1358827475@qq.com
Account Opening Bank: Botou Branch of Bank of China
Account number: 100399943203
Agricultural bank account number: 6228481739059615270