space frame in constructions

Construction of the gym space frame. Exceeding the big beat with the construction of the gym space frame.

Construction of the gym space frame. Exceeding the big beat with the construction of the gym space frames. Construction technology of gym space frame with the manufacturing method of machining high strength bolts for steel structures. The large span space frame models are being used well in the construction structure of the 21st-century modern gymnasium space frame.

Construction structure of gym space frame. With more than 20 years of experience in construction steel structure gymnasium and glass roofs. The construction of the stainless steel stadium space frame with a glass roof or steel truss roof is increasingly developing in Vietnam.

The link button for the construction of the gym space frame. In general, the construction of the gym space frame linked by high strength bolts of a steel structure works by applying a torque on the nut to make the screws close. Therefore, the connecting parts are tightly attached to create friction.

Construction of the modern gym space frame. When a force wrench is used to apply the specified pre-pressure, whether the torque factor is qualified or not will have a direct effect on the final torque and pre-pressure, while also having an effect. is important to the quality of the connection of the space frame.

The design calculates the static load and dynamic force of the roof of the large span steel structure.

In the actual construction of the gym space frame, there are a number of high-strength bolts whose torque coefficient does not meet the specification requirement. Hot-dip galvanized high-strength bolts are widely used and in wind power towers and drive towers, for example.

These types of high-strength bolts have also begun to be used in public gym space frame construction or with civil steel structures in recent years. In the gym space frame construction application, the measured torque coefficient of the bolt after galvanization must be much higher than the average value of the torque coefficient required by the specification.

In terms of the construction of this gym space frame, the current specifications have yet to give the stadium construction technology and reasonable testing standards. If the torque is converted to the actual torque factor during the installation, the final torque will be much greater, which will seriously impair the bearing capacity of the space gantry ball node.

1. Main technical contents of construction of gymnasium space frames.

a) Design principles of construction of gymnasium space frame.

Engineers need to come up with a design plan in advance. After an extensive discussion about the construction of the gym space rig and understanding of the safety parameters and indicators. It can be made clear that torque and torque coefficient are only one means of applying static load pressure. Therefore, it is envisaged to use the method of applying pre-pressure directly on high tensile bolts.

Force calculation and construction of gym space frame. The torque application method and the torque factor determination are therefore omitted, and the loss of bolt strength due to the torque and the wastage of bolts can be avoided due to the unqualified, unsatisfactory torque factor. requirements of the design and construction of the gym space frame. Based on the above assumptions, an attempt was made to develop a hydraulic pre-tensioning device for high-strength bolts in steel structures.

b) The tensioning equipment calculated and tested before the construction of the gymnasium's space frame.

The high tensile hydraulic pre-tensioning machine developed by German scientists is shown in Figure 5.1-1.

c) The process of constructing and constructing the space frame of a large span steel-roofed gymnasium. The construction process is reflected in the construction process.

4) Construction running process of the hydraulic tensioner

The process of experimental construction activities in the construction of the gymnasium space frame of the hydraulic tensioner is explained in detail as follows:

(1) Pass the high strength bolt into the flange bolt hole freely, wear a single nut, and set the workpiece tool in place 

(2) Use screws to screw the tension sleeve to reach the required position of the tension device.

(3) Start the tensioner hydraulic system, drive the high-strength bolt through the screw sleeve, and use the tension clamp to compress the two flanges.

(4) After the pre-tension reaches the required structure value, use a hand wrench to tighten the high strength bolts and nuts, and the degree of tightening depends on the operator's ability to twist.

(5) After the workpiece bar is hydraulically unloaded, the high-strength bolt is allowed to bear the tensile force itself and the screw sleeve is separated from the screw to complete the high-strength bolt tension structure.

2. Hot-dip galvanized steel public gym space rig construction specifications.

After the last tightening of the high-strength bolt, a quality check must be done:

a) Whether the value of pre-tension meets the respective standard requirements of the design code.

b) Whether the thread is in even contact with 2 to 4 locks.

c) After the initial screwing has been completed, the high-strength bolt is checked with a small hammer percussion method to avoid leaks.

The construction method of the gym space frame with a wrench and hammering is to press firmly on one side of the nut and press it as close to the nut ring as possible, then use a small hammer weighing 0, 3 ～ 0.5kg knock on the other side. of the nut, if the fingers feel a slight vibration. To qualify, great vibration is that the screw is either tightened or missing, and no vibration is too tight.

3 Scope of application of construction space frame, galvanized steel gymnasium bolts.

The hydraulic tension gym space frame construction kit can be used as a tool to apply high strength bolts in newly constructed steel structure buildings, and also can be used as a tensile test tool for high strength bolts in existing steel structure connections. It is suitable for gym space frame construction that connects high-strength bolts of the steel structure.

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