钢管混凝土混合结构技术标准GB/T 51446-2021（英文版）

根据《住房和城乡建设部标准定额司关于开展施工现场建筑垃圾减量化技术标准等2项标准编制工作的函》（建司局函标[2020]119号）的要求，标准编制组经广泛调查研究，认真总结实践经验，参考有关国际标准和国外先进标准，并在广泛征求意见的基础上，制定本标准。 本标准的主要技术内容是：总则、术语和符号、基本设计规定、材料、结构分析、钢管混凝土桁式混合结构承载力计算、钢管混凝土加劲混合结构承载力计算、节点与连接设计、防护设计、施工和验收等。

1 General Provisions 2 Terms and Symbols 2.1 Terms 2.2 Symbols 3 Basic Requirements 3.1 General Requirements 3.2 Actions and Combinations of Actions 3.3 Detailing Requirements 4 Materials 4.1 Steel 4.2 Concrete 4.3 Connecting Materials 4.4 Protective Materials 5 Structural Analysis 5.1 General Requirements 5.2 Design Indices 5.3 Analysis Methods 6 Design of Trussed Concrete-Filled Steel Tubular (CFST) Hybrid Structures 6.1 General Requirements 6.2 Design of Structures for Compression, Tension and Bending 6.3 Design of Structures for Shear 7 Design of Concrete-Encased Concrete-Filled Steel Tubular (CFST) Hybrid Structures 7.1 General Requirements 7.2 Design of Single-Chord Structures for Compression and Bending 7.3 Design of Four-Chord Structures for Compression and Bending 7.4 Design of Six-Chord Structures for Compression and Bending 7.5 Design of Slender Structures for Compression and Bending 7.6 Design of Structures for Compression and Bending under Long-Term Loading 7.7 Design of Structures for Shear 7.8 Design of Arch Structures 8 Design of Joints 8.1 General Requirements 8.2 Joints of Trussed CFST Hybrid Structures 8.3 Beam-to-Column Joints of Concrete-Encased CFST Hybrid Structures 8.4 Detailing Requirements for Column Bases and Supporting Joints 8.5 Fatigue Design of Joints 9 Protective Design 9.1 General Requirements 9.2 Design of Corrosion Resistance 9.3 Design of Fire Resistance 9.4 Design of Impact Resistance 10 Construction and Acceptance 10.1 General Requirements 10.2 Fabrication and Erection of Steel Tubes 10.3 Construction of Core Concrete 10.4 Construction of Concrete Encasement 10.5 Inspection and Acceptance Appendix A Constitutive Models for Materials in Concrete-Filled Steel Tubular (CFST) Hybrid Structures Appendix B Stability Factors for Concrete-Filled Steel Tubular (CFST) Members inAxial Compression Appendix C Long-Term Load Coefficients for Concrete-Encased Concrete-Filled Steel Tubular (CFST) Hybrid Structures