# Pedestrian Comfort Analysis and Parameterized Optimization Design for Raised Floors
## 4 Discussion  
In this study, we introduced a novel approach to assess the pedestrian comfort on raised floors within residential settings. Nevertheless, when extending this methodology to diverse environments, it becomes imperative to adjust the standard threshold values appropriately and to take into account the distinct influences exerted by these varied contexts on pedestrian comfort. For example, in venues characterized by rhythmic activities, such as dance balls, concerts, sports events, or aerobics, special attention must be given to the interplay between movement and floor performance. In contrast, locales that experience significant vibrations due to dynamic or industrial equipment--such as office settings or operational zones within factories--necessitate a comprehensive analysis of how these factors impact floor performance; in such instances, incorporating vibration isolation techniques might prove essential. Once a building is completed and its equipment becomes operational, the task of addressing vibration concerns presents formidable complexities. Proposing operational halts to facilitate the installation of vibration isolation systems usually meets resistance from facility owners, and the feasibility of adjusting frequency through structural mass \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**D (mm)**} & **beamSpan** & **beamIndent** & **beamWidth** & **h1 (mm)** & **h2 (mm)** \\  & **(mm)** & **(mm)** & **(mm)** & **h1 (mm)** & **h2 (mm)** \\ \hline
15 & 300 & 220 & 90 & 3 & 20 \\
20 & 370 & 200 & 100 & 3 & 20 \\
15 & 410 & 220 & 100 & 4 & 8 \\
20 & 350 & 200 & 85 & 3 & 15 \\
15 & 410 & 220 & 100 & 4 & 8 \\
20 & 320 & 210 & 80 & 3 & 8 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: The Pareto set. \begin{table}
\begin{tabular}{l c c c c c c c c} \hline \hline  & * a & & **k** & **\begin{tabular}{c} **Slow Walk** \\ **(mm/s2)** \\ \end{tabular} & \begin{tabular}{c} **Normal** \\ **Walk** \\ **(mm/s2)** \\ \end{tabular} & \begin{tabular}{c} **Fast Walk** \\ **(mm/s2)** \\ \end{tabular} & \
\begin{tabular}{c} **Slow** \\ **Running** \\ **(mm/s2)** \\ \end{tabular} &
\begin{tabular}{c} **Fast** \\ **Running** \\ **(mm/s2)** \\ \end{tabular} \\ \hline CeramicEPS & \(-8\) & 13.812 & 3.7322 & 16.957 & 11.226 & 21.020 & 15.240 & 22.175 \\ CeramicCement & \(-7\) & 122.11 & 5.482 & 28.093 & 18.563 & 34.930 & 25.324 & 36.835 \\ SteelFloor & \(-18\) & 29.419 & 1.0516 & 4.780 & 3.164 & 5.925 & 4.294 & 6.249 \\ SmcFloor & 0 & 275.44 & 5.1094 & 23.223 & 15.373 & 28.788 & 20.870 & 30.367 \\ \hline \hline \end{tabular}  
* a: Variations in overall thickness of the support plate (mm).  
\end{table} 
Table 9: Calculation results of the pedestrian comfort of optimized raised floor. modification is often limited. Similarly, increasing structural stiffness may be hindered by spatial restrictions. In navigating these challenges, tuned mass dampers (TMD) offer a promising solution for vibration mitigation [31, 45, 46]. By introducing a mass tuned to a specific frequency within the structure, TMD can absorb and counteract mechanical energy from the source of vibrations, thus effectively diminishing their amplitude. This strategy addresses vibration issues efficiently without interrupting the normal operations of equipment, ensuring the long-term stability and functionality of the building structure. Yet, it is essential to recognize that the experience of pedestrian comfort on raised floors is shaped not only by the floor's dynamic properties but is also significantly influenced by individual variability in tolerance to vibrations. Comfort perception remains inherently subjective, contingent on personal susceptibility to vibrations, and is further complicated by the intricate interplay of physiological and psychological factors, which inject uncertainty into vibration perception.