Engineering wood and bamboo raw materials are naturally renewable, sustainable managed forests and abundant bamboo resources make them inexhaustible; compared with traditional building materials such as concrete and steel, the production of engineering wood and bamboo materials has the least impact on the environment. The application of modern engineering wood and bamboo structures is an important way to achieve green and sustainable development in structural engineering. Engineering wood and bamboo structures face three major technical challenges: anisotropy of wood and bamboo materials, complex stress mechanisms, easy transverse splitting under tension and shear, and difficulty in improving performance! Structural materials are combustible, have high fire risks, large residual deformations after earthquakes, and pose a threat to disaster prevention and mitigation! Long-term service of structures leads to cumulative damage, strong time variability of performance, difficulty in ensuring reliability, and scientific design is challenging! This project has been supported by 13 national and provincial-level topics for over a decade of continuous technical research, forming key technologies for modern engineering wood and bamboo structures, which have been widely applied in engineering construction. Innovative achievements include: (1) A three-dimensional nonlinear damage constitutive model for wood and bamboo materials was proposed, elucidating the micro-macro evolution mechanism of cracks under complex stress conditions. A modification and reconstruction technology for wood and bamboo materials combined with crack prevention and control techniques was invented, achieving a significant improvement in the mechanical properties of wood and bamboo structures. Based on nonlinear continuum damage mechanics, a three-dimensional nonlinear damage constitutive model for wood and bamboo materials was proposed; based on fracture mechanics, high-precision analysis models for cracked wood and bamboo components and nodes were established; new engineering materials such as reconstituted wood and reconstituted bamboo were invented, with a natural defect removal rate of over 95%, a load-bearing capacity increased by 86% compared to natural materials, and a combustion performance improved to non-combustible level. Crack prevention and control connections and self-tapping screw reinforcement technologies were invented, achieving a node stiffness that can be up to 2.98 times that of existing technologies and an increase in ductility by 54%. (2) A structural fire control technology based on the spatiotemporal distribution law of thermal response was established, and a self-resetting wood and bamboo structure with post-earthquake recoverable function was invented. A new low-damage wood mixed structure system has been developed to significantly enhance the disaster resilience of wooden and bamboo structures. A model for the spatiotemporal distribution of thermal responses in components has been established, revealing the mechanism of structural performance evolution during fires. Calculation methods for the fire resistance limits of key connections and components under different load ratios have been proposed; a seismic-recoverable functional wooden and bamboo structure has been developed, with residual deformations after major earthquakes reduced by more than 80% compared to traditional structures; new structural systems such as multi-story prefabricated wood-steel, bamboo-steel mixed structures, and concrete frame-wood floor hybrid structures have been proposed, which can withstand severe damage after earthquakes of magnitude eight. (3) A performance degradation prediction technology for wooden and bamboo structures under long-term service based on machine learning has been invented, proposing a performance-based analysis and design method to ensure the time-varying reliability of structures, achieving a fundamental improvement in the design level of wooden and bamboo structures. Based on long-term monitoring data and machine learning algorithms, A performance degradation prediction model for structures under long-term service has been established, with a fitting degree of over 95% to long-term experimental results; based on structural reliability theory, an earthquake safety assessment method for engineering wood-bamboo structures based on time-varying reliability has been developed; further considering post-earthquake fire and other coupled disaster scenarios, a performance-based multi-objective multi-stage design method for engineering wood-bamboo structures has been established. This project has authorized 23 invention patents and 10 utility model patents; published 3 monographs; published 217 papers (including 57 SCI papers and 45 EI papers); compiled 8 standards; established a plywood production line with an annual output of ten thousand cubic meters; trained more than 150 master's and doctoral students. The project results have been directly applied to the Suzhou Yulinglong Ecological Residential Demonstration Garden, the Shanghai Chongming Jinmao Hyatt Regency Resort Hotel, the Vanke Qingdao Town Visitor Center, Shanxi Changzhi Cultural and Creative Park and more than 100 other large-scale public buildings and office residential wooden bamboo structure projects. In the past three years, the added value has reached 1.81 billion yuan, the added profit has reached 220 million yuan, and foreign exchange earnings have reached 1.72 million US dollars. The project achievements have led the development of modern engineering wooden bamboo structures in China, with significant social and economic benefits. Experts have assessed that the overall project achievements are at the international advanced level, and the wooden mixed structure achievements are at the international leading level.