Basic design principles of seismic space frame

-

 What are the basic design principles of seismic space frame structure?In general,it should be allowed to calculate the horizontal earthquake action in the two main axis directions of the building structure, and carry out the seismic check.The horizontal seismic action in each direction should be borne by the lateral force resisting members in that direction.For structures with obliquely crossed lateral force-resistant members, when the angle of intersection is greater than 15°, the horizontal seismic action in the direction of each lateral force-resistant member shall be calculated separately.

For space frame structures with significantly asymmetrical mass and stiffness, the torsional effect under the action of a two-way horizontal earthquake should be included. In other cases, the method of adjusting the seismic effect should be allowed to be included in the torsional impact. For large-span and long cantilever structures in the seismic fortification of eight or nine degrees, the vertical seismic action should be calculated.

The support conditions of the space frame structure can be assumed to be hinged supports or elastic supports that can be moved laterally in two directions, laterally in one direction, and without lateral displacement according to the stiffness of the support structure and the structure of the support nodes.

The space frame is widely applicable, so we should add more knowledge to increase our understanding of the space frame.



Comments

Post a Comment

Popular posts from this blog

In what areas are steel structures usually used

-
Image
Steel structure manufacturers can process a wide variety of products, including the following categories: 1. Single and multi-story industrial and residential buildings. 2. Office buildings, primary and secondary schools, hospitals. 3. Luxury villas, tourism buildings. 4. Modern commercial buildings for various markets. 5. Mobile buildings (demountable buildings, emergency projects). The main building materials in membrane structure engineering are steel and membrane materials. For steel structures, the main processing flow includes: material feeding → cutting → inspection → assembly welding → rust removal → numbering packaging → factory. The precautions are: 1. Materials must have a material certificate. 2. According to the cutting length and rod specifications calculated by the designer, the rods are classified and stacked for easy construction in the next step. 3. According to the penetration size of the steel pipe, considering the influence of wall thickness and groove, the automa...
Read more

Three Methods of Space Frame Installation

-
Image
  What are the 3 methods of space frame  installation ? SAFS steel structure professional technical staff share with customers and friends:   1.  Splicing the entire space frame  directly, after the completion  of  the corresponding ceiling method to hoist the entire space frame  into the air, and then within a certain hovering time, weld the space frame  in the corresponding position and connect it with the whole  building . This method is faster  to install, but has higher requirements for operators. 2.  The method is relatively mild, the space  frame works directly at a high place, and the space  frame is installed bit by bit through the part that intersects with the building, that is, starting from the surrounding area and completing the work at the final center point. The schedule  is very slow, but the operation difficulty is also reduced a lot. 3. This method is mainly applicable to the quadrangular pyrami...
Read more

Space frame has become one of the important fields of modern architectural structure

-
Image
Since the 20th century, the spatial structure has been greatly developed all over the world. The space frame structure is a kind of space grid structure. The so-called "space structure" is relative to the "plane structure", which has the characteristics of three-dimensional function. The space structure can also be regarded as the expansion and deepening of the plane structure. Since the advent of the space structure, it has been welcomed by people for its high-efficiency mechanical performance, novel and beautiful form, and fast and convenient construction. In stadiums, convention centers, cultural facilities, transportation hubs and even industrial plants that require large spans and large spaces, space structures can be seen everywhere.   After a century of continuous development of space structure, in terms of structural form, in addition to space frame and reticulated shell, membrane structure, tensegrity system, open and close roof, and foldable structure are...
Read more