【正文】 cks. Therefore, this article on the top of brickconcrete structure housing the temperature cracks in the wall were analyzed, and the corresponding supervision measures aimed at the quality of supervision means to eliminate this mon problem.(A)The reasons for the formation of temperature cracks Formation of temperature cracks in brickconcrete structure and morphological characteristics are mixed by a mortar cement mortar or cementitious materials such as brick masonry hand as vertical loadbearing system, reinforced concrete (precast or castinplace) as the level of floor loadbearing system. Because of reinforced concrete linear expansion coefficient than that of brick masonry similar to the linear expansion coefficient twice. Also because of roof and wall of the large temperature difference in the hot summer, the roof temperature can reach 60 ℃ or higher, while the corresponding temperature of the brick wall was only 30 ~ 35 ℃, the deformation caused by temperature than the roof the temperature of the wall deformation, resulting in the brick wall at the top of the shear stress, when the brick wall inside the bear more than the principal tensile stress the tensile strength of brick masonry, the wall will crack. If the level of gray wall joints of a higher shear strength, the principal tensile stress will have eight shaped oblique wall cracks。 such as the level of gray wall joints poor shear strength, it will have the level of the wall cracks or horizontal angle cracks.Eight characters are usually inclined cracks at the top of the walls at both ends of the 石家莊鐵道學(xué)院四方學(xué)院畢業(yè)設(shè)計531 ~ 2 months room inside, it may sometimes be the length of the development of housing 1 / 3. This produced many cracks in the walls both inside and outside the vertical and horizontal walls sometimes have, in general symmetryshaped cracks. Housing has a window at both ends, it often cracks in two pairs of angle through the window. Inclined cracks generally have only toplevel, serious to the following layers may develop. The level of the characteristics of the cracks are: located on flat roof or roof beam of 2 ~ 3 Paper 縫中 gray bricks, the cracks along the wall at the top of the general distribution, at both ends of the more serious.(B)To prevent temperature cracks Supervision StrategiesFundamental in order to put an end to the top of brickconcrete structure housing the occurrence of cracks in the wall temperature, the construction supervision engineer to deal with the whole process of supervision activities, including design and supervision stages and stages of construction supervision.1The design phase of SupervisionSupervision at the design stage of the design of brickconcrete structure, usually on the seismic design of structural measures to consider the more stress on the control of temperature, reducing the temperature cracks in the structure of measures to consider less. Thus, supervision in the design process, the supervision engineer should pay attention to the following points:(1)Housing seam length and temperature of brickconcrete building set up to monitor the longer accumulated at both ends of the temperature the greater the deformation, resulting in more severe temperature cracks. Housing should therefore be strictly controlled crack length and temperature settings for pitch, so that in line with the Code for Design of masonry structures requirements.(2) Roof designed to monitor①The use of flat roof as little as possible the conditions, the designers should be remended to replace flat roof has sloping roof purlin system, or put into a flat roof design roof garden, this can not only beautify the urban environment, but also to improve the living conditions of households in the top floor.②Insulation layer, insulating layer design of energysaving building design standards should be on the hot roof insulation layer calculation to ensure that the insulation layer thickness, the density of insulation materials, particle size, thermal conductivity and moisture content to target specific technologies such as requirements, granular insulation 石家莊鐵道學(xué)院四方學(xué)院畢業(yè)設(shè)計54layer should be set up Road and exhaust port with exhaust air connectivity and, if necessary, based insulation layer overhead.③ not try big parapet cornices should be designed, if the set is not too reinforced concrete and an additional insulation layer.③Set the proposed design of the sliding layer in the reinforced concrete roof and brick masonry set up to connect the sliding surface layer (such as linoleum, talcum powder, white metal, synthetic rubber, etc.), seismic zone of the beam can be put in under the sliding layer , and roof reinforced with Rachel.(3) The top of the wall designed to monitor①To set up the top floor of the Ring Road to the top horizontal wall and vertical wall of reinforced concrete should be all set up beam, and should be closed. At the end of the proposed toplevel starting from the gable of the two inside and outside the scope of longitudinal walls and transverse loadbearing reinforced masonry walls designed and constructed Rachel column.②Enhance the strength of brick and mortar Level practical projects, from strength to consider the use of brick, mortar strength grade to the top of the more lower the wall did not take because of the thermal stress, and cause the wall cracking. Therefore, the top floor of the brick and mortar masonry strength grade should be assured that the proposed class Mu10 brick, M75 mortar class.③Crack the top floor should be an additional column in the ordinary course design, structural column to the top of the more less, but taking into account the role of thermal stress should be at the top end of the scope of two additional anticracking column. In order to prevent cracks in the selection of temperature, anti split co