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Area with a small degree of hospital seismic retrofit design of brick masonry structure


Improve the ductility of structural columns in order to solve the housing structure of the high and increasing the ductility of the structure, additional structure in the outer wall of each column bay. Since the original structure of the ring beam has been set on each floor, so the structure added Wai Liang Gui and between the wall and bolt grouting will be used to connect the old and new parts into a whole, and to ask \column, add dig build,[link widoczny dla zalogowanych], the pad structure and Rachel together. Seismic identification of best examples of the original structure Zhu 8 identified key indicators of l identification of patients given the results of the standard indicators of the total housing hoop height, floor height, total height of slaughter house wearing 10.65m, a total of not more than the total height of 7m, layer over layer of story, Cao height over the number of three, storey is divided into 3.6,3.3, not more than 3.5m over 3.65m, the first layers of high over 3.3mO. No. 1m mortar wall, thick and one layer for the 5o = No mortar. Three seismic strength training body shall be full of caries [a wall of a serious shortage of seismic intensity, seismic intensity level degree and mortar except for the 25 stairs to ask for the l ・ 41 Phase 21 - 4537cm thick wall, its external walls are 24cm thick mining maximum cross wall spacing. 5m assembled the largest roof access cover or more than 1. m groove spacing shall not exceed 6m load-bearing wall to make end-to-wall windows and doors shall not be less than 1.5m hole more than 0.75m 0.75m minimum distance edge light assembly type floor live cover and the roof edge with cast or fabricated Xinjiang F cover does not meet requirements or roof escapement depression, sent the text of the vertebral cut calibration, the Department of salt used to do earthquake in Gansu Province Lu Room written by \Add cast floor slabs to improve the integrity of the structure caused by an earthquake ground motion is very complex, both from side to side, there are ups and downs. Therefore, improving the seismic capacity of the whole structure to prevent the structure fall apart,[link widoczny dla zalogowanych], hope has a very important significance. To this end, the laying of precast hollow board 4cm thick layer of reinforced concrete cast, plus 10 @ 1000 along the longitudinal length of the longitudinal reinforcement pass through walls when drilling machinery and other vulnerable members of the awning should be strengthened Rachel. V. Experience of multi-storey brick houses 11o degrees seismic zone checking showed that the vertical earthquake can not be ignored. This is because larger vertical earthquake at this time, when the upward direction of its role, the weakening of the layers of brick masonry shear strength. Top vertical stress is small, the direction of the vertical earthquake when asked, but also make brick masonry tensile stress. To the project as an example, the vertical seismic load (Ⅳ = 8362kN) about the ball flat seismic load (O = 1o526kN) 60, the role of seismic load group than in Taiwan alone only when the level of seismic loading shear strength of masonry reduction of 11 to 15, while the top-level tensile stress D: a 19.3kPa. 2.10 degree area of the total height of the multi-storey brick houses, the height limit, the maximum spacing of transverse wall, the wall local minimum size, floor (house) surface integrity and strength of aphid seismic requirements more stringent, it tends to build houses consider the earthquake or the standard at less than 10 degrees fortification. Thus, 8 degree area the situation is different, l0 degree of multi-storey brick houses in the earthquake zone identification feature is the identification of most of the project or does not meet the seismic requirements base department, individual items or even quite different. The project identified five projects have exceeded the barrier, in particular,[link widoczny dla zalogowanych], a serious shortage of seismic intensity. 3. Seismic reinforcement of the main goal is to increase the strength of housing, Argentina and integrity. This project uses \10 degrees for vertical seismic zone is a few of. 4 10-degree earthquake zone in China are mostly in remote areas, by 锛 poor conditions, such as a rogue province that is a poor county doctors. Therefore, the area should be based on l0 degrees actual economic conditions, scientific research, the use of decision analysis methods, the development of 10 degrees as soon as possible health for seismic assessment of multi-story brick, some instructions from regional economic conditions for reinforcement. 5l0 degrees of reinforcement layers brick design is a Seismic new topic, it is recommended to carry out the praise after the re-study the following aspects: (1) a strong set of horizontal and vertical seismic loads under the table, the destruction of many repeated brick and failure mechanism; (2) to consider horizontal and vertical under seismic load combination to the rational combination of internal forces and seismic checking simplified calculation method ( can effectively assume both the level and the role of shoes to the earthquake load combination of new programs and strengthening measures for seismic retrofit. References [1] \strengthening technical measures to building flexible Perak,[link widoczny dla zalogowanych], Earthquake Press, 19862c 10-degree earthquake zone in Gansu Province for Seismic Technology An additional temporary facilities smell (internal capital defense), the Office of Gansu philosophy seismic earthquake by the China Academy of Building Research Fellow of the Lian-Wei Zhang u Seismic studies by the Institute). (Yang Endi, spines were Yi) - 37 -
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