The history of library communication between China and the United States in the Republic of China period is an important topic for understanding the origin of China’s librarianship and Library Science.
In order to study the calculation methods of shear behavior of reinforced concrete beams of Chinese modern reinforced concrete buildings,this paper carried out tests on the concrete compressive strength of 12 Chinese ...In order to study the calculation methods of shear behavior of reinforced concrete beams of Chinese modern reinforced concrete buildings,this paper carried out tests on the concrete compressive strength of 12 Chinese modern concrete buildings,the mechanical properties of 66 rebars from different Chinese modern concrete buildings,and the concrete cover thickness of 9 Chinese modern concrete buildings,and the actual material properties and structural configurations have been obtained. Then,the comparison on calculation methods include the Chinese original calculation method,the Chinese present calculation method,the American present calculation method and the European present calculation method is studied with case analysis method.The results show that the Chinese original calculation method of shear behavior of reinforced concrete beams is based on the allowable stress calculation method,and the design safety factors are 3. 55- 4. 00. The standard value of the compressive strength of concrete cubes is 8. 48 MPa,the standard value of the concrete tensile strength is 1.20 MPa,the standard value of the yield strength of rectangular rebars is 229. 56 MPa,and the standard value of the yield strength of round rebars is 276. 82 MPa. The average value of the concrete cover thickness of beams and columns is 35.96 mm. In term of calculation area of hoop rebars of reinforced concrete beams,without considering earthquake loads,the Chinese original structural calculation method is safer than the Chinese present structural calculation method,but is more unsafe than the American present structural calculation method and the European present structural calculation method. The results can provide the support for structural safety assessments and repair designs of Chinese modern reinforced concrete buildings.展开更多
This paper discusses Shantou's two urban planning efforts in the City Hall era of the Republic of China, revealing how the two efforts help Shantou to become a modern city by analyzing the planning processes inclu...This paper discusses Shantou's two urban planning efforts in the City Hall era of the Republic of China, revealing how the two efforts help Shantou to become a modern city by analyzing the planning processes including data collection, planning analysis, functional zoning, road system design, and old city redevelopment. As pioneers of urban planning practice, the city executives and technical experts of Shantou set a goal to build the city into a "perfect region" and "Garden City," aiming to create a precedent for "civil city development." Based on institutional construction and the introduction of European and American urban planning theories and experience, the rebirth of Shantou City with business characteristics had been gradually achieved by modifying and improving its city plans.展开更多
文摘The history of library communication between China and the United States in the Republic of China period is an important topic for understanding the origin of China’s librarianship and Library Science.
基金Sponsored by the National Natural Science Foundation of China(Grant No.51138002)a Foundation for the Author of National Excellent Doctoral Dissertation of PR China(Grant No.201452)
文摘In order to study the calculation methods of shear behavior of reinforced concrete beams of Chinese modern reinforced concrete buildings,this paper carried out tests on the concrete compressive strength of 12 Chinese modern concrete buildings,the mechanical properties of 66 rebars from different Chinese modern concrete buildings,and the concrete cover thickness of 9 Chinese modern concrete buildings,and the actual material properties and structural configurations have been obtained. Then,the comparison on calculation methods include the Chinese original calculation method,the Chinese present calculation method,the American present calculation method and the European present calculation method is studied with case analysis method.The results show that the Chinese original calculation method of shear behavior of reinforced concrete beams is based on the allowable stress calculation method,and the design safety factors are 3. 55- 4. 00. The standard value of the compressive strength of concrete cubes is 8. 48 MPa,the standard value of the concrete tensile strength is 1.20 MPa,the standard value of the yield strength of rectangular rebars is 229. 56 MPa,and the standard value of the yield strength of round rebars is 276. 82 MPa. The average value of the concrete cover thickness of beams and columns is 35.96 mm. In term of calculation area of hoop rebars of reinforced concrete beams,without considering earthquake loads,the Chinese original structural calculation method is safer than the Chinese present structural calculation method,but is more unsafe than the American present structural calculation method and the European present structural calculation method. The results can provide the support for structural safety assessments and repair designs of Chinese modern reinforced concrete buildings.
基金supported by the General Program of the National Natural Science Foundation of China entitled"Research on Theory and Historical Experience of Water System Construction in Old Cities"(Grant No.51278197)the Youth Program of the National Natural Science Foundation of China entitled"Researchon Mechanism of Contemporary Space Design Essence Embedded in the Historical Context"(Grant No.51308219)
文摘This paper discusses Shantou's two urban planning efforts in the City Hall era of the Republic of China, revealing how the two efforts help Shantou to become a modern city by analyzing the planning processes including data collection, planning analysis, functional zoning, road system design, and old city redevelopment. As pioneers of urban planning practice, the city executives and technical experts of Shantou set a goal to build the city into a "perfect region" and "Garden City," aiming to create a precedent for "civil city development." Based on institutional construction and the introduction of European and American urban planning theories and experience, the rebirth of Shantou City with business characteristics had been gradually achieved by modifying and improving its city plans.
