0571-87090099

新闻资讯

NEWS

  • 房屋安全鉴定方案
  • 本站编辑:浙江中赫工程检测有限公司发布日期:2020-02-29 12:24 浏览次数:

(一)混凝土框架及砖混结构:

1、对房屋的原设计图纸、装修改造意图、历史修缮加固情况、前期的使用情况及后期的使用要求进行调查了解;

2、对房屋结构类型、建筑层数、地址、建造年代、朝向、装修概况及使用用途进行现场调查;

3、对房屋的地基基础、上部结构、围护结构、建筑装修及建筑设备进行外观检查、测量,对部分典型构件损坏情况(变形、开裂、沉陷、渗漏、露筋等)进行外观检查及拍照记录;对损坏较严重、重要性构件及设计改造有特别要求的构件进行重点检测鉴定;

4、采用裂缝测宽仪混凝土承重构件进行裂缝情况进行测量,包括其长度、宽度、深度、形状、条数,必要时绘出裂缝分布图;依据《混凝土结构设计规范》(GB50010-2002)对其进行评定,判断其是否超出规范允许值。

5、采用“DJD2-1GC”型电子经纬仪对房屋部分部位竖向构件倾斜率或偏移比值进行测量,分析是否出现倾斜及不均匀沉降现象。

6、对房屋现有上部结构的建筑及结构布置、构件尺寸、楼板厚度、层高等情况进行现场测量,并与设计图纸进行复核。

7、按照国家现行相关检测标准及设计要求抽取一定数量的钢筋混凝土承重构件进行配筋情况、砼保护层厚度检测。

8、按国家现行相关检测标准及设计要求抽取一定数量的钢筋混凝土承重构件采用钻芯法进行混凝土抗压强度检测,对不宜采用钻芯法检测混凝土强度的构件采用回弹法进行检测鉴定。

9、按国家现行相关检测标准及设计要求抽取一定数量的承重砖墙采用回弹法对其砖砌块强度及砌筑砂浆强度进行强度检测,对于砌筑砂浆强度太低时采用砂浆贯入法进行检测鉴定。

10、对根据现场检查、检测结果,并依据国家现行相关规范对该房屋现状结构进行承载力验算分析。

11、根据检查、检测情况和验算结果,依照《民用建筑可靠性鉴定标准》(GB50292-1999)或《工业建筑可靠性鉴定标准》(GB50144-2008)判定该房屋结构安全性是否满足目前的使用要求,并对不满足安全使用要求及目前出现结构损坏的构件提出合理的处理建议。

12、具体检测项目根据项目实际情况进行调整。

(二)钢结构:

1、对房屋结构类型、建筑层数、房屋地址、建造年代、房屋朝向、房屋装修概况及房屋用途进行现场调查。

2、根据委托方提供的图纸,对房屋钢结构布置、构件尺寸、层高等进行复核;未能提供设计图纸的对各栋房屋现有上部结构的布置、构件尺寸、层高等情况进行现场测量并绘制结构图。

3、对房屋钢构件目前出现的裂缝、损坏、涂层脱落、钢材锈蚀、节点损伤、焊接外观缺陷、连接紧固状况等外观损坏进行检查鉴定。

4、依据国家规范标准采用磁粉检测或渗透检测对钢构件表面质量进行检测鉴定。

5、依照国家相关检测、验收规范选取部分钢屋架及钢结构构件,采用超声或磁粉探伤作焊缝检测,检测鉴定是否有气孔、夹渣、弧坑裂纹、电弧擦伤等缺陷。

6、采用轴力计和扭矩扳手对钢结构螺栓连接部高强度螺栓的扭矩系数进行检测鉴定。

7、采用电子经纬仪对房屋竖向构件进行垂直度测量,分析房屋是否出现倾斜、变形及不均匀沉降现象,具体检测数量根据现场实际情况及相关标准确定。

8、采用全站仪或拉线法对屋架、桁架及其杆件的挠度变形进行检测鉴定。

9、对型钢构件采用游标卡尺和千分尺对钢材的厚度进行检测鉴定。

10、对管材钢构件采用超声测厚仪对其管材的壁厚进行检测鉴定。

12、采用涂层测厚仪对钢构件的防腐或防火涂层厚度进行检测鉴定。

13、依据国家规范标准对网架结构螺栓球进行磁粉探伤。

14、根据现场实际检测数据及设计要求,依据《建筑结构荷载规范》(GB50009-2001)及国家有关建筑结构设计规范,对房屋的上部结构承载力进行验算,评定房屋目前的承载能力是否满足国家规范要求、后期的安全使用要求。

15、根据检查、检测情况和验算结果,依照《民用建筑可靠性鉴定标准》(GB50292-1999)或《工业建筑可靠性鉴定标准》(GB50144-2008)判定该房屋结构安全性是否满足目前的使用要求,评定目前房屋的可靠性等级,并对不满足安全使用要求及目前出现结构损坏的构件提出合理的处理建议。

16、具体检测项目根据项目实际情况进行调整。

2-1Q130111346-50.jpg

(1) Concrete frame and brick concrete structure:

1. Investigate and understand the original design drawings, decoration and reconstruction intention, historical repair and reinforcement, early use and later use requirements of the house;

2. Conduct on-site investigation on the type of building structure, number of floors, address, construction time, orientation, general situation of decoration and use purpose;

3. Conduct appearance inspection and measurement on the foundation, upper structure, enclosure structure, building decoration and building equipment of the house, conduct appearance inspection and photo recording on the damage of some typical components (deformation, cracking, subsidence, leakage, exposed reinforcement, etc.); conduct key inspection and identification on the components with serious damage, important components and special requirements for design and transformation;

4、 The crack condition of concrete bearing member is measured by crack width meter, including its length, width, depth, shape and number, and the crack distribution diagram is drawn when necessary; it is evaluated according to the code for design of concrete structures (GB50010-2002) to determine whether it exceeds the allowable value of the code.

5. The "djd2-1gc" electronic theodolite is used to measure the inclination or deviation ratio of the vertical components in some parts of the house, and analyze whether there is inclination and uneven settlement.

6. Measure the building and structure layout, component size, floor thickness and floor height of the existing superstructure of the house on site, and recheck with the design drawings.

7. According to the current national testing standards and design requirements, a certain number of reinforced concrete load-bearing components are selected for reinforcement and concrete cover thickness testing.

8. According to the current relevant national testing standards and design requirements, a certain number of reinforced concrete load-bearing components are selected to use the core drilling method to test the compressive strength of concrete, and the components that are not suitable to use the core drilling method to test the concrete strength are tested and identified by the rebound method.

9. According to the current relevant national testing standards and design requirements, select a certain number of load-bearing brick walls to use rebound method to test the strength of brick blocks and masonry mortar, and use mortar penetration method to test and identify the strength of masonry mortar when the strength is too low.

10. According to the results of on-site inspection and testing, and according to the current relevant national standards, the bearing capacity of the current structure of the house is checked and analyzed.

11. According to the inspection, inspection and calculation results, according to the standard for reliability appraisal of civil buildings (gb50292-1999) or the standard for reliability appraisal of industrial buildings (gb50144-2008), determine whether the structural safety of the building meets the current use requirements, and put forward reasonable treatment suggestions for the components that do not meet the safety use requirements and present structural damage.

12. The specific test items shall be adjusted according to the actual situation of the project.

(2) Steel structure:

1. On the spot investigation was carried out on the type of building structure, number of floors, address, age of construction, orientation, decoration and purpose of the building.

2. According to the drawings provided by the entrusting party, recheck the layout of steel structure, component size and floor height of the house; if the design drawings are not provided, measure the layout, component size and floor height of the existing superstructure of each house on site and draw the structural drawings.

3. Inspect and identify the cracks, damages, coating falling off, steel corrosion, joint damage, welding appearance defects, connection and fastening conditions and other appearance damages of the steel components of the house.

4. According to the national standard, the surface quality of steel members is tested and identified by magnetic particle testing or penetrant testing.

5. According to the relevant national inspection and acceptance specifications, select some steel roof truss and steel structure components, and use ultrasonic or magnetic particle flaw detection for weld detection to detect and identify whether there are defects such as air hole, slag inclusion, crater crack, arc scratch, etc.

6. The torque coefficient of high-strength bolts in the bolted connection of steel structure is tested and identified by using axial force meter and torque wrench.

7. Use electronic theodolite to measure the verticality of the vertical components of the house, and analyze whether there is inclination, deformation and uneven settlement of the house. The specific detection quantity shall be determined according to the actual situation on site and relevant standards.

8. The deflection and deformation of roof truss, truss and its members are tested by total station or pull wire method.

9. Vernier caliper and micrometer are used to test and identify the thickness of steel members.

10. The ultrasonic thickness gauge is used to test and identify the wall thickness of the pipe steel members.

12. The thickness of anti-corrosion or fire-proof coating of steel members is tested and identified by coating thickness gauge.

13. According to the national standard, the magnetic particle inspection was carried out on the bolt ball of grid structure.

14. According to the actual test data and design requirements on site, according to the load code for building structures (GB50009-2001) and relevant national design codes for building structures, the bearing capacity of the upper structure of the house is checked and calculated to assess whether the current bearing capacity of the house meets the requirements of national codes and the requirements for safe use in the later period.

15. According to the inspection, inspection and calculation results, according to the standard for reliability appraisal of civil buildings (gb50292-1999) or the standard for reliability appraisal of industrial buildings (gb50144-2008), determine whether the structural safety of the building meets the current use requirements, evaluate the reliability level of the current building, and evaluate the components that do not meet the safety use requirements and have structural damage at present Put forward reasonable treatment suggestions.

16. The specific test items shall be adjusted according to the actual situation of the project.

地址:杭州市江干区同协路28号7幢626室

电话:0571-87090099

邮箱:zjzh87090099@163.com

在线客服

电 话:

0571-87090099

传 真:

0571-87090099

业务咨询:

13082827799

13819164939

在线咨询:

1103826365(QQ)

邮 箱:

zjzh87090099@163.com