- This article was considered for deletion at Wikipedia on March 28 2018. This is a backup of Wikipedia:BJMB. All of its AfDs can be found at Wikipedia:Special:PrefixIndex/Wikipedia:Articles_for_deletion/BJMB, the first at Wikipedia:Wikipedia:Articles_for_deletion/BJMB.
BJMB is the abbreviations of bolted joint modular building.
BJMB has two systems: one is space frame structure, and the other is regular steel structure.
A space frame is a rigid, lightweight, truss-like structure constructed from interlocking struts in a geometric pattern. Space frames can be used to span large areas with few interior supports. Like the truss, a space frame is strong because of the inherent rigidity of the triangle; flexing loads (bending moments) are transmitted as tension and compression loads along the length of each strut. Steel space frames provide great freedom of expression and composition as well as the possibility to evenly distribute loads along each rod and external constraints. With these features, steel space frames can be used to achieve also complex geometries with a structural weight lower than any other solution. The inner highly hyper-static system provides an increased resistance to damages caused by fire, explosions, shocks and earthquakes. Space frames are modular and made of highly industrialized elements designed with a remarkable dimensional accuracy and precise surface finish.
Regular steel structure consists of components such as steel beam, steel column, steel truss. All the components are connected by bolts or rivets. Because of its light self-weight and easy erection, it is widely used in glass dome, gas station, atrium etc.
BJMB competitiveness arises from advanced engineering for spatial structures that allow:
- Long-span: LF spatial structure is so rigid to enable building span up to 200 meters without internal pillars to maximize internal space.
The above coal storage shed project is in Philippines with span 124m, which is the widest one in Philippines. As there are a lot of typhoons in Philippines, the structure should be rigid enough to resist impact of typhoon with minimum 250km/h. LF is so proud to be only one spatial structure supplier in China who is capable to design according to NSCP (National Structural Code of the Philippines) Philippine coal storage using BJMB structure, under construction.
- Long life: Steel is the most commonly used material for long-span structure. But how to protect a steel structure from corrosion? Painted steel building do not last long while stainless steel and aluminum are prohibitively expensive. BJMB spatial structure are built with maintain-free durable materials which are with duplex corrosion system. A duplex system is formed by painting or powder coating over hot-dip galvanized steel. When used together, the corrosion protection of the two systems combined is far superior to protection system used independently.
Economic Benefit of duplex systems：duplex systems provide tremendous economic advantages because of extended time to first maintenance and delayed maintenance cycle. Initially, the cost of a duplex system is high because you must pay for both corrosion protection systems. however, because of the synergistic effect the initial premium cost pays off over the life of project and in the end is less expensive than coating bare steel.
- Facilitated: fully mechanical/bolted joint for ease of construction and low construction cost;considerate packing for loading, unloading and transportation.
- Excellent safety：BJMB spatial structure system can withstand brutal snow loads, typhoon-force winds and high earthquake because of its inherent rigidity of the triangle. The strongest typhoon Haiyan with top speed 315km/h struck east of Philippines, countless buildings collapsed. Coal storage shed withstand it and protected manufacturing and safeguarded the raw materials.
- Fantastic: any structure, shape, span & loading; aesthetic beauty; eco-friendly; optimized minimum mass design.