增设钢筋网砂浆面层、板墙和抗震墙（1）底层内框架砖房的底层和多层内框架

Adding reinforced mesh mortar surface layer, slab wall and seismic wall <br>(1) The seismic shear of the bottom layer of the bottom frame brick house and each layer of the multi-layer internal frame brick house should all be borne by the seismic wall in this direction. That is to say, when these houses have to be strengthened through the appraisal, it is best to strengthen the wall to withstand all the seismic shear forces in this direction. For the internal frame houses, the bearing capacity of the seismic transverse walls is often insufficient and the distance between the seismic walls exceeds the limit The following principles should be observed during reinforcement: <br>① When the bearing capacity of the seismic wall of the inner frame house is insufficient, you can use the reinforced mesh mortar surface layer to carry out seismic reinforcement, strengthen the bearing capacity of the seismic wall and improve the overall structural ductility, and the construction is convenient and within the framework of maintaining the original <br>there is a large space; when a serious shortage of primary seismic wall bearing capacity, can be used to reinforce concrete wall. <br>② When the seismic interval of the inner frame house exceeds the limit, or the lateral seismic bearing capacity of the whole house differs greatly, the seismic wall should be added first, and diagonal supports can also be added along the seismic direction. Earthquake-resistant walls generally use brick walls. When the integrity of the building floor is good and the lateral seismic bearing capacity differs greatly from the fortification requirements, reinforced concrete earthquake-resistant walls can also be used. <br>(2) After the reinforcement of the wall with the reinforced mortar surface layer, the influence coefficient and reinforcement coefficient are determined according to the following conditions: <br>① The influence coefficient of the support length of the building, the roof and the support length of the staircase, hallway and external wall beams should be The actual size of the new system is calculated separately after the reinforcement of the new system influence coefficient and local influence coefficient. <br>② The distance between the load-bearing window wall, the inner corner of the inner wall bearing the beam and the edge of the door and window hole and the end of the outer wall to the edge of the door and window hole The local influence factor can go to 1.0. <br>③ After the slab wall is strengthened, the reinforcement coefficient of the wall section can be according to the specification.

Added reinforced mesh mortar surface layer, panel wall and anti-seismic wall<br>(1) The seismic shear power of the ground floor and multi-storey inner frame brick house in the ground floor and the inner frame brick house should all be borne by the seismic wall in that direction. That is to say, when these houses through the identification must be reinforced, it is best to strengthen the wall to withstand the full seismic shear force in that direction, for the inner frame of the house often encountered earthquake-resistant cross wall carrying capacity is insufficient and earthquake-resistant wall spacing beyond the limit of the problem, reinforcement to comply with the following principles:<br>(1) When the internal frame house anti-seismic wall carrying capacity is insufficient, can use the reinforced mesh mortar surface layer for anti-seismic reinforcement, enhance the carrying capacity of the anti-seismic wall and improve the overall structure extension, and the construction is convenient, but also to maintain the original inner frame<br>There is a large space, and when the original seismic wall has seriously insufficient carrying capacity, it can be reinforced with reinforced concrete slab walls.<br>(2) When the seismic spacing of the inner frame house exceeds the limit, or when the horizontal seismic carrying capacity of the whole house differs more, priority should be given to the addition of anti-seismic wall, and the stiletto support may also be added along the direction of the earthquake. Seismic wall in general use of brick walls, when the overall structure of the house is better, and horizontal seismic carrying capacity and fortification requirements are largely different, can also use reinforced concrete seismic wall.<br>(2) The influence coefficient and the enhancement coefficient after reinforcing the wall with reinforced mortar surface layer are determined according to the following conditions:<br>(1) The influence coefficient of the length of the building, roof support and the support length of the stairwell, foyer and the girderof of the outer wall shall be calculated according to the actual size of the thickened system and the local impact coefficient after the reinforcement.<br>(2) The weight-bearing window wall, the distance from the inner wall of the girder to the edge of the door and window hole and the distance from the outer wall to the edge of the door and window hole, the original does not meet the requirements of seismic identification, after reinforcing with the panel wall, the above-mentioned wall local influence coefficient can go to 1.0.<br>(3) After the wall is reinforced, the enhancement factor of the wall section can be based on the specification.

Add steel mesh mortar surface course, slab wall and anti-seismic wall<br>(1) The seismic shear force of the first floor and each floor of the multistory internal frame brick building should be borne by the seismic wall in this direction. That is to say, when these buildings pass the appraisal and must be strengthened, it is better to strengthen the wall to bear all the seismic shear in this direction. In view of the problem that the bearing capacity of the anti-seismic transverse wall is insufficient and the distance between the anti-seismic walls exceeds the limit value, the following principles shall be observed during the reinforcement:<br>① When the bearing capacity of the seismic wall of the internal frame building is insufficient, the reinforced mesh mortar surface layer can be used for seismic reinforcement to enhance the bearing capacity of the seismic wall and improve the ductility of the overall structure. Moreover, the construction is convenient and the original of the internal frame can be maintained<br>When the bearing capacity of the original anti-seismic wall is seriously insufficient, the reinforced concrete slab wall can be used for reinforcement.<br>② When the anti-seismic space of the inner frame house exceeds the limit value, or the transverse anti-seismic bearing capacity of the whole house is quite different, the anti-seismic wall shall be added preferentially, or inclined support shall be added along the anti-seismic direction. Generally, brick walls are used as seismic walls. When the integrity of the building floor is good, and the lateral seismic bearing capacity is quite different from the requirements of fortification, reinforced concrete seismic walls can also be used.<br>(2) The influence coefficient and reinforcement coefficient of the wall strengthened with reinforced mortar surface course shall be determined according to the following conditions:<br>① The influence factors of the supporting length of the building, roof and the supporting length of the stairwell, hall and external wall girder should be calculated respectively according to the actual size after thickening.<br>② The distance between the bearing inter window wall, the external corner of the inner wall bearing the girder to the door and window opening edge, and the distance between the outer wall and the door and window opening edge. If the original requirements for seismic evaluation are not met, the local influence coefficient of the above wall can go to 1.0 after being strengthened with plate wall.<br>③ After the plate wall is strengthened, the reinforcement coefficient of the wall section can be in accordance with the specification.