The first domestic case of "compensation method" slippage construction of special-shaped sapce frame steel structure roof installation completed

-

      With the completion of the positioning of the steel truss of the last unit, the large-span unequal-length trusses of the main roof of the Suzhou Bay Cultural Center Grand Theater have all slipped into place. It is the first case of "compensation method" sliding construction of the special-shaped sapce frame steel structure roof, which is the "finishing touch" of the Grand Theater.

The roof truss for the sliding construction has a total of 9 units, with a total weight of about 350 tons. The overall shape is "C", with a longest span of 41.3 meters and a duration of 48 hours.

The project adopts the domestic advanced sliding technology of large-scale sapce frame steel structure. Workers first set up a working platform on the south side of the Grand Theater, hoisted 260 large steel components to the platform, and welded and assembled them into 9 steel trusses. After connecting the auxiliary sliding device, the pulley is installed at the bottom of the truss, and it is slid to the designated installation position through the special track. The whole process does not require workers to work at heights.

In order to ensure the welding quality, the project mobilized 18 experienced welding masters to work in three shifts 24 hours a day. Symmetrical welding of full penetration primary welds is adopted to reduce welding deformation and ensure precise butt joints of slip trusses. "Such a new design is a great challenge to the construction of the sapce frame steel structure. For this reason, the project adopts the 'compensation method' construction, and develops the 'unequal-length truss slip construction auxiliary device', so that each truss can reach the same length. Design and install sliding rails on the east and west sides of the main structure of the Grand Theater to achieve parallel rail sliding." said the person in charge of the project's sapce frame steel structure.

If a truss with a height of 3.6 meters and a width of only 0.4 meters rolls over and overturns during sliding, the truss weighing about 4 tons may fall like a domino. In order to ensure the stability and safety of the sliding construction, the project team designed a special anti-overturning device, and adopted the construction plan of two-unit truss sliding together. The person in charge of the sapce frame steel structure technology of the project introduced, "Before construction, we used computer simulation technology to repeatedly analyze the entire construction process, and carried out animation simulations for the operators. Strictly control the space positioning, on-site hoisting, load stress release, etc. to ensure the safe and accurate sliding construction."

Suzhou Bay Cultural Center is located on the shore of the beautiful Taihu Lake. It is a brand-new and modern large-scale comprehensive cultural building. The overall design is in the shape of a "ribbon" symbolizing silk, with a total construction area of about 210,000 square meters. After its grand theater is completed, it can accommodate 1,600 people to watch the performance at the same time, enjoy a world-class audio-visual feast, and become a cultural pearl embellished in the center of the "ribbon".

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