Seismic Design of Buildings Partial Revision 4-Yunnan Academy of building research

Seismic Design of Buildings Partial Revision 4

Published on.

2013-12-19

　　7.3.6 floor , roof beams or trusses reinforced concrete ring beam should or reliable connection with walls, columns ( including structural columns ) ; 6 degrees, the connecting beams and brick columns should not weaken the column section , the top of the brick columns should be independent have a reliable connection in both directions ; shall adopt separate brick columns 7 to 9 degrees . Not less than 6m span girders supporting member should use a combination of masonry and other measures to strengthen and to meet capacity requirements .

　　[ Revision Notes ]

　　Added to the mandatory provisions of this section , and based on the requirements specification masonry structures large-span beam support , complementing the structure and capacity requirements -span concrete beam supporting member , does not allow the use of ordinary brick or brick columns .

　　7.3.8 stairwell shall meet the following requirements:

　　A top floor stairwell walls and facades should cross at intervals along the wall height 500mm long pass set 2φ6 steel ; other layers stairwell wall should be set with a 60mm thick reinforced concrete floor in the lounge at half-height platform or 7-9 degrees or reinforced brick with its mortar strength rating not less than M7.5, longitudinal reinforcement should not be less than 2φ10.

　　Between the two staircases and beams supporting the length of the hall interior Yang corner of not less than 500mm, and should be connected to the ring beam .

　　3 Assembly staircase connecting section should be reliable platform plate girder ; should not be used cantilevered wall or stepping stepping insert vertical rib wall stairs, not the use of unreinforced brick fence .

　　Floor 4 prominent roofs , elevators , structural columns should be out into the top and connected to the top of the ring beam , interior and exterior junction should be set up along the wall high 2φ6 every 500mm long pass Rachel reinforcement.

　　[ Revision Notes ]

　　Added to the mandatory provisions of this section , stairwell evacuation routes as earthquakes and earthquake forces more complex, likely to cause damage , it improves the structural requirements of masonry structures stairwell.

　　11.1.1 This section applies to 6 to 8 degrees (0.20g) unfired adobe houses and cave dust and soil bearing walls of rammed earth , soil arching room .

　　Note : a gray walls mixed with lime finger (or other bonding material ) soil mixed with lime and adobe wall construction of the wall ;

　　2 soil excavated from the cave , including the original undisturbed soil cliff by the adobe masonry kilns and kiln vault pit .

　　[ Revision Notes ]

　　This section further clarify the scope of the provisions of the applicable specification adobe houses .

　　11.1.5 adobe house and outside walls should also be staggered ramming or bite layered puzzle , exterior and interior and exterior corners junction, should put a layer of high bamboo ribs along the wall , wood, etc. Vitex Rachel intervals of about 300mm materials.

　　[ Revision Notes ]

　　The implementation of this section to change the specification rigor words , emphasis on strengthening the connection between the pull walls of adobe houses , improve structural integrity .

　　11.2.12 enclosure wall and wooden structures should be reliable Rachel ; adobe , brick and other masonry retaining wall should be completely wrapped poles should be affixed to the outside of the wooden puzzle .

　　[ Revision Notes ]

　　The implementation of this section to change the specification rigor words , emphasizing the wooden structure housing the main enclosure wall with Rachel in order to avoid the collapse of adobe and other injuries .

　　11.3.2 multilayer of stone houses and the number of layers should not exceed a total height requirements in Table 11.3.2 :

　　[ Revision Notes ]

　　The implementation of this section to change the specification rigor words to strictly control the scope of stone houses .