Research On Pedestrian-Induced Vibration Of Archetectural Structures

In recent years, the functional requirements of the building structure (safety, serviceability, durability, etc.) is becoming increasingly broad, deep. Meanwhile, the modern design of building structures often contain lightweight, large span, cantilevered, high flexibility and other design elements, the impact caused by internal staff activities rhythm exciting force for such structures is becoming increasingly significant. Therefore, the applicability of human-induced vibration of building structures has become a focal point of the current housing users, designers and researchers of common concern. In general, such a person is usually caused by vibration, although not cause harm to the safety of the building structure, but will produce vibration comfort of work and people living in the interior of the building, for example, cause anxiety, panic, and reduced efficiency etc.. Therefore, living in an increasingly emphasize building comfort today, for large public buildings, laboratories, and other human-induced vibration comfort existence hidden architectural structures vibration comfort analysis and research is particularly necessary. Vibration Comfort of our architectural structure of human-induced infancy. "Structures allow vibration standard" GB50686-20122013 enacted only international standard (ISO2631) in Chinese translation version.In many cases, the designer can not find the design basis and foreign standards or reference manuals, and foreign standards and manuals of engineering tests and our background is different, resulting design is not accurate.Vibration Comfort of our architectural structure of human-induced infancy.2013 promulgated the "structures allow vibration standard" GB50686-2012 only international standard (ISO2631) in Chinese translation version, engineering design in our country has not yet formed a line with China’s population characteristics allow construction projects vibration standards. In many cases, designers often referring to a variety of foreign standards or manual configuration comfort design, and these foreign standards and manuals of engineering tests and our background is different, resulting in inaccuracies and comfort evaluation of structural design standards of comfort is not unity.In this paper, for the domestic large span structures, plant structure and the structure of the promenade, who induced vibration comfort typical structure of a variety of issues were prone to human-induced vibration response of the structure of the field test and the corresponding numerical analysis. Then, using three more classic foreign vibration comfort evaluation criteria (respectively, "the American Institute of Steel Construction vibration comfort evaluation criteria" (AISC-11), "the British vibration comfort evaluation criteria" (BSI6841) and "International Organization for Standardization vibration comfort evaluation criteria "(ISO2631-2)) for the above-mentioned structure induced vibration comfort people were studied, compared and analyzed the three criteria for the same target structures were induced vibration comfort differences, to establish compliance with China people walking habits, weight-induced vibration characteristics of human comfort evaluation criteria provide examples of reference works. Specifically, the research content of this paper are as follows:C1) Shenyang Cultural Arts Center Concert Hall for the study of complex structures, mainly to study the large-span prestressed concrete structure Floor man-induced vibration comfort problems. First, field measurement and finite element analysis based on the large span cantilevered floor structure and dynamic properties of a variety of human-induced vibration floor under dynamic load response were tested and analyzed. The results showed that the overall structure of a large concert hall cantilevered vertical first-order natural frequency is low, the body’s internal vibrations in the frequency range of easy perception (3Hz～10Hz). Then, the concert hall four weeks major corridors single person walking load testing to determine the specific vibration sensitive areas. Finally, in the vibration sensitive areas determined to walk the same frequency synchronous multiplayer simulate crowd random walk method for testing and analysis of human-induced vibration response of the floor, and the application of the current foreign human-induced vibration for comfort issue three kinds of evaluation criteria for the Hall of structural vibration comfort were evaluated, and this three typical vibration comfort evaluation criteria were compared. The results showed that one-third octave analysis of international standards (ISO2631) can better reflect the impact of the proposed floor vibration comfort. (2) Study the vibration comfort crane loads affect plant construction subsidiary office floor since the crane girder directly supported on the frame column crane may run a greater vibration ancillary office floor. While the doors and windows and other non-structural elements are generate substantial vibration produces uncomfortable impact on the office staff. For comfort for office due to vibration problem caused crane carrying site measurement and analysis, followed in accordance with the crane carrying different ways and at different load for office floor vibrations affect comfort. Applications for the current domestic and international human-induced vibration problem comfortable three evaluation criteria for the evaluation of structural vibration comfort, and this three typical vibration comfort evaluation criteria for comparison.(3) Shenyang Jianzhu University Research Corridor structure (three-strip frame structure) in the floor under the influence of vibration loads of people flowing comfort problems. The gallery is on the teachers and students of the class structure is not only a major transportation hub, but also for teachers and students to provide daily study and rest areas. Taking into account the movement of persons within a specific period of time a large gallery, likely to cause vibration interference to study and rest of the teachers and students. In view of this, through the gallery floor vibration acceleration test different flow density response in case of application of the above three criteria for the evaluation of the vibration comfort corridor floor vibration comfort were evaluated. After analysis, the results of the evaluation requirements are met. This shows that for the gallery structure traffic areas and rest areas do not interfere with each other floor vibration. In three comfort evaluation criteria under consideration,1/3 octave analysis of international standards (ISO2631) raised more able to reflect comfort of floor vibrations.(4) Floor vibration comfort of a problem with the Shenyang Conservatory of Music teaching building long-span floor dance studio as a research object, the dancers perform during a typical dance moves. Dance movements considered include all female dancers perform the same frequency jumping, all male dancers perform the same frequency jumping, male female dancers performed together with the frequency pounding and dancers performed a variety of possible scenarios, such as normal classes. Through the floor vertical acceleration test and analysis under these circumstances, and apply the aforementioned three vibration comfort of the floor vibration comfort evaluation criteria were evaluated, it can be concluded on the floor vibration comfort of analysis of international standards (ISO2631) more consistent with the site personnel subjective feelings.In summary, the "American Institute of Steel Construction vibration comfort evaluation criteria" (AISC-11) focused on the acceleration levels were evaluated for comfort floor rhythmic vibration 0.5m/s2 or less. This specification is more suitable for the impact of human activities related to changes in the location of goods, equipment and mechanical movement (cranes) and other vibration-induced vibration source vibration comfort evaluation. "British vibration comfort evaluation criteria" (BSI6841) vibration comfort evaluation is used when the effect by holding reflect rms vibration acceleration peak determined four floor vibration engineering structures studied in this paper tend to be affected by a variety factors Affecting the complex process. Therefore, when using this standard comfort floor vibration evaluate complex process and can not get a more satisfactory conclusion. "International Organization for Standardization vibration comfort evaluation criteria" (ISO2631-2) and China’s current "structures allow vibration standard" agreement (GB50686-2012) content, all of which use 1/3 octave analysis, Meanwhile, in order to permit the acceleration of human comfort evaluation vibration characterization is relatively clear and concise, it is suitable for different types of building structures vibration comfort were evaluated. But because the standard does not specifically for the Chinese population, so future work can be the basis of this evaluation criteria, based on their specific parameters are modified to a greater extent, matching vibration characteristics and vibration feelings of Chinese people.