Journal of Urban Science (도시과학)

Urban Science Institute (인천대학교 도시과학연구원)
권호 표지
DOI QR코드

DOI QR Code

A Study on LIT Girder Performance Improvement

LIT 거더 성능 개선에 대한 연구

  • Published : 2022.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

Conventional RC beams for crossing small and medium-sized rivers do not have a cross-sectional area, so the floating debris is accumulated and disasters such as damage to bridges occur. To improve this, the PSC method was invented. However, this also had problems such as transverse curvature, increase in dead weight due to cross-sectional shape, and negative moment generated during serialization, so it was necessary to develop a new type of girder. Therefore, it was intended to propose a LIT(Leton Interaction Thrust) girder bridge that is safer and has better performance than the conventional PSC girder with improved section efficiency. Unlike existing girder bridges, the LIT girder has the feature that the change in the strands of the entire girder occurs only in the vertical direction when the first tension is applied because the tendon arrangement is symmetrical by applying the raised portion. In addition, slab continuation generates a secondary moment that is advantageous to the continuous point, effectively controlling the negative moment and preventing the corrosion of the tendon. The dimensions of the cross section were determined, and the arrangement of the strands was designed to conduct structural analysis and detailed analysis. As a result of the structural analysis, the stress of the girder showed results within the allowable compressive stress, and the deflection showed the result within the allowable deflection. showed results. In addition, a detailed analysis was performed to examine the stress distribution around the girder body and the anchorage area and the stress distribution of the embossed portion, and as a result, the stress of the girder body due to the tension force showed a stable level.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부의 재원으로 한국연구재단의 지원을 받아 수행한 성과입니다(No. NRF-2020R1C1C1004147).

References

  1. Chan, E. S. W. (2013), "Managing green marketing: Hong Kong hotel managers' perspective." International Journal of Hospitality Management, Vol. 34, pp.442-461.
  2. Deng, S. and Burnett, J. (2000), "A study of energy performance of hotel buildings in Hong Kong", Energy and Buildings, Vol. 31, No. 1, pp.7.
  3. Deng, S. and Burnett, J. (2002), "Energy use and management in hotels in Hong Kong", International Journal of Hospitality Management, Vol. 21, No. 4, pp.371.
  4. EMSD (Electricity and Mechanical Services Department) (2019), "Hong Kong energy end-use data 2019", EMSD, Hong Kong.
  5. Luan, H. and Leng, J. (2016). "Design of energy monitoring system based on IOT", 2016 Chinese Control and Decision Conference (CCDC), pp.6785-6788.
  6. Michailidis, I. T., Michailidis, P., Alexandridou, K., Brewick, P. T., Masri, S. F., Kosmatopoulos, E. B. and Chassiakoa, A. (2018), "Seismic Active Control under Uncertain Ground Excitation: an Efficient Cognitive Adaptive Optimization Approach.", 2018 5th International Conference on Control, Decision and Information Technologies (CoDIT), pp.847-852.
  7. Molina-Markham, A., Shenoy, P., Fu, K., Cecchet, E. and Irwin, D. (2010), "Private memoirs of a smart meter.", BuildSys '10: Proceedings of the 2nd ACM Workshop on Embedded Sensing Systems for Energy-Efficiency in Building, pp.61-66.
  8. Quinn, M. and Schrier, T. (2011), "Is there a vampire lurking in your hotel? An examination of standby power consumption in Virginia hotel rooms" 16th Graduate Students Research Conference in Hospitality and Tourism (Poster Session).