Research progress of precast modular buildings and modular joints
Modular architecture originated in 1967.
It provides an important reference for promoting the development and application of modular construction in the next stage in China.
Compared with traditional buildings, modular buildings have been promoted for their advantages of fast and efficient construction, excellent quality, safe construction process, predictable construction time, less waste of resources and promoting environmental sustainable development.
Thispapercanbeusedasareferenceforpromotingthedevelopmentandapplicationofmodularconstructioninthefuture.
Thispaperreviewsthelatestresearchdevelopmentofprecastmodularbuildingsandmodularconnections.
From the research progress at home and abroad, it can be seen that modular buildings fully meet the needs of the current industrialization of building structures.
Finally，themainchallengesandfutureresearchtrendsofmodularconstructionsarediscussed.
Modular building is a construction form of manufacturing module units in the factory and then transporting them to the construction site, so as to assemble them into a complete building [1-2].
Key words: assembled module; Modular building; Steel structure system; Container building; Connection node, superior capability, cooperative capability, cooperative capability Differentstructuralsystemsofmodularbuildingsaremadefromvariousbuildingmaterials，inwhichtheprecaststeelmembersarecommonlyused.
Firstly，theclassifications，materials，andstructuraltypesofmodularstructuresarepresented.
Itisshownthatthemodularbuildingsfullysatisfythecurrentstructuralindustrializationdemands.
Keywords：precastmodule； modularbuilding； steelstructuralsystem； containerbuilding； Connection1 research background 1.1 the research progress at home and abroad is different from the traditional building construction method.
Modular buildings often involve a variety of structural systems and building materials, among which steel components are most widely used in modular buildings.
Finally, it expounds the main challenges and future development prospects of modular building development.
Inaddition，asthestructuralperformanceishighlydependentontheconnections，asystematicreviewispresentedfocusingontheimpactofcurrentmodularconnectionstomodularbuildingstructures，especiallyexternalandinternalconnectionsofsteelstructures.
Thestructuralperformanceofdifferentmodularbuildingsisdiscussed.
Firstly, the classification, materials and structural forms of precast modular buildings are introduced, and the structural properties of different types of modular buildings are discussed.
So far, modular architecture has been widely used in apartments, hotels, schools, hospitals, office buildings and other different types of buildings [3-5]..
This paper summarizes the latest research progress of precast modular buildings and modular joints.
In addition, because the structural performance of modular buildings highly depends on the node connection of modules, the existing modular nodes, especially the joint forms between and within steel structure modules, are systematically combed.
