The second pedestrian-structure interaction effect refers to the fact that the resident pedestrian on the structure does not just act as an additional mass but acts as an independent mass-spring-damping system coupled to the structure, similar to a TMD (tuned mass damper) attached to the structure, and its effect on the dynamic characteristics and vertical vibration response of the structure is complicated. This idea comes from some actual phenomena that have been observed by researchers who study the effects of crowds on the dynamic properties of structures. The crowds not only increase the frequencies or even change the mode shapes of the structure [24; 25; 26; 27] but also increase the damping of the structure [28; 29; 30; 31; 32; 33]. In the field of biomechanics, [PERSON] and [PERSON] [34] and [PERSON] and [PERSON] [35] treated the human body model as a single-degree-of-freedom (SDOF) mass-spring-damping (MSD) system and used random vibration excitation to excite the human body in standing and sitting postures. By measuring the contact force and displacement between the human body and the electro-hydraulic servo shaker, the data were obtained from the fundamental frequency and damping ratio of the human body with 60 test subjects in sitting and standing postures. As the level of excitation of the human body in this test is much higher than that of the structure to which the person is exposed in structural vibration, the results cannot be directly applied to coupled human-structure systems. In the field of civil engineering single-degree-of-freedom (SDOF) mass-spring-damped (MSD) human models are mostly used to assess the effect of the human body on the dynamic properties and response of structures. [PERSON] et al. [36; 37; 38] first used a single-degree-of-freedom damped human model to study human-structure interaction, proposing that the coupled mass of the human body be taken as the total mass of the human being. They obtained damping of 1.25 kN-s/m and stiffness of 40 kN/m for the human body, but the measured walking forces were not accurate, and the measured and calculated forces response time histories did not match well. [PERSON] and [PERSON] [39] carried out a coupled human-structure vibration test on a simply supported concrete slab with a span of 4 m. The natural frequencies and damping ratios of the coupled structure were identified by a modal identification method, and the frequencies and damping ratios of 30 standing human bodies were derived from a SDOF MSD model. [PERSON] and [PERSON] [40] proposed a novel closed-form solutions to identify the dynamic properties of the human-structure system with the frequency response functions and the method was proved more efficient with no need of nonlinear optimization nor spatial or modal models of the empty structure and the human-structure system. [PERSON] et al. [41] proposed a generalized formulation of a damped plate-oscillator model to get the dynamic properties of coupled human-structure systems, and the effects of human occupants on the dynamic properties of lightweight floors were validated by the test results. Identifications of moving mass-spring-damper model can also be conducted through experimental test, which provide a basis for structural design [11; 42; 43; 44]. In addition to the identification of human model parameters in fixed position, the identification of parameters of moving people is a hot topic of research as well [11; 42; 43; 44]. Due to the effects of pedestrian-structure interactions,the issue of vibration serviceability for special types of flexible structures such as glass structures deserves particular attention, in which the mass of the glass structure is relatively small compared to the mass of the pedestrian, while, the span-to-thickness ratio of the glass structure is relatively high [45; 46].