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(CNode) ÁöÁ¡¿¡ Displcement ÅÇÀ» È°¼ºÈ ÇÏ¿© Thermal Movement ÀÔ·ÂÇÏ´Â ¹æ¹ýÀ» »ç¿ëÇÕ´Ï´Ù.
¾Æ·¡¿¡ º¸ÀÎ TableÀº Sustained Load¸¦ ±âÁØÇÏ¿© ±¸ÇÑ °ªÀÌ Operation Load¸¦ ±âÁØÇÏ¿© ±¸ÇÑ °ª°ú ¶È °°À½À» ±¸Ã¼ÀûÀ¸·Î
º¸À̱â À§ÇÑ Load Cases ºñ±³Ç¥ÀÔ´Ï´Ù. ÀÌ Table¿¡¼´Â Seismic Load¸¦ XÃà ¼ººÐ°ú ZÃà ¼ººÐÀ» SRSS·Î ´õÇÏÁö ¾Ê°í
Window Loadó·³ ±×´ë·Î »ç¿ëÇÏ´Â °ÍÀ¸·Î µÇ¾î Àִµ¥, ÀÌ´Â Sus-Base·Î ±¸ÇÑ °¢°¢ÀÇ Load °ªÀÌ Ope-Base·Î ±¸ÇÑ °¢°¢ÀÇ
Load °ª°ú ¶È °°À½À» º¸À̱â À§ÇÑ, (½ÇÁ¦·Î´Â »ç¿ëµÇÁö ¾Ê´Â) °¡»ó Load CasesÀÔ´Ï´Ù. ½ÇÁ¦·Î´Â IBC ¶Ç´Â KBC¿¡
µû¶ó Net Seismic LoadsÀÇ XÃà ¼ººÐ°ú ZÃà ¼ººÐÀ» SRSS·Î ´õÇÏ¿© Support Load·Î »ç¿ëÇØ¾ß ÇÕ´Ï´Ù. ³»°¡ ½ÇÁ¦·Î
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CAESAR-II Load Case Combination Table | ||||||||
Ope-Base Load Cases | Sus-Base Load Cases | |||||||
L1=WW+HP | HYD | Algebr | L1=WW+HP | HYD | Algebr | |||
---|---|---|---|---|---|---|---|---|
L2=W+T1+P1 | OPE | Algebr | Norm.Ope. | L2=W+T1+P1 | OPE | Algebr | Normal Ope. | |
L3=W+T2+P1 | OPE | Algebr | L3=W+T2+P1 | OPE | Algebr | |||
Wind Support Load | L4=W+P1+WIN1 | OCC | Algebr | Wind Load | ||||
L4=W+T1+P1+WIN1 | OCC | Algebr |
Wind Load |
L5=W+P1+WIN2 | OCC | Algebr | ||
L5=W+T1+P1-WIN1 | OCC | Algebr | L6=W+P1+U1 | OCC | Algebr | Seismic Load | ||
L6=W+T1+P1+WIN2 | OCC | Algebr | L7=W+P1+U2 | OCC | Algebr | |||
L7=W+T1+P1-WIN2 | OCC | Algebr | L8=W+P1 | SUS | Algebr | Sustained Load | ||
Seismic Support Load | L9=L4-L8 | OCC | Algebr | +X Dir | Net Wind Load | |||
L8=W+T1+P1+U1 | OCC | Algebr | Seismic Load | L10=L5-L8 | OCC | Algebr | +Z Dir | |
L9=W+T1+P1-U1 | OCC | Algebr | L11=L6-L8 | OCC | Algebr | +X Dir | Net Seismc Load | |
L10=W+T1+P1+U2 | OCC | Algebr | L12=L7-L8 | OCC | Algebr | +Z Dir | ||
L11=W+T1+P1-U2 | OCC | Algebr | Wind Support Load | |||||
L12=W+P1 | SUS | Algebr | Sus.Load | L13=L2+L9 | OCC | Algebr | +X Dir |
Ope.±âÁØ Wind Load¿Í °°Àº °ª |
Net Wind Load | L14=L2-L9 | OCC | Algebr | -X Dir | ||||
L13=L4-L2 | OCC | Algebr | Net Wind Load | L15=L2+L10 | OCC | Algebr | +Z Dir | |
L14=L5-L2 | OCC | Algebr | L16=L2-L10 | OCC | Algebr | -Z Dir | ||
L15=L6-L2 | OCC | Algebr | Seismic Support Load | |||||
L16=L7-L2 | OCC | Algebr | L17=L2+L11 | OCC | Algebr | +X Dir |
Ope.±âÁØ Seismic Load¿Í °°Àº °ª |
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Net Seismic Load | L18=L2-L11 | OCC | Algebr | -X Dir | ||||
L17=L8-L2 | OCC | Algebr | Net Seismic Load | L19=L2+L12 | OCC | Algebr | +Z Dir | |
L18=L9-L2 | OCC | Algebr | L20=L2-L12 | OCC | Algebr | -Z Dir | ||
L19=L10-L2 | OCC | Algebr | Thermal Load Stress | |||||
L20=L11-L2 | OCC | Algebr | L21=L2-L8 | EXP | Algebr | Thermal Stress | ||
Thermal Load Stress | L22=L3-L8 | EXP | Algebr | |||||
L21=L2-L12 | EXP | Algebr | Thermal Stress | Wind Load Stress | ||||
L22=L3-L12 | EXP | Algebr | L23=L8+L9 | OCC | Scalar | +X Dir |
Wind Load Stress (ÁÂÃø°ú °°À½) |
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Wind Load Stress | L24=-L9(NoRept) | OCC | Algebr | -X Dir | ||||
L25=L8+L24 | Scalar | |||||||
L23=L12+L13 | OCC | Scalar |
Wind Load Stress |
L26=L8+L10 | OCC | Scalar | +Z Dir | |
L24=L12+L14 | OCC | Scalar | L27=-L10(NoRept) | OCC | Algebr | -Z Dir | ||
L25=L12+L15 | OCC | Scalar | L28=L8+L27 | Scalar | ||||
L26=L12+L16 | OCC | Scalar | Seismic Load Stress | |||||
Seismic Load Stress | L29=L8+L11 | OCC | Scalar | +X Dir |
Seismc Load Stress (ÁÂÃø°ú °°À½) |
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L30=-L11(NoRept) | OCC | Algebr | -X Dir | |||||
L27=L12+L17 | OCC | Scalar | Seismic Load Stress | L31=L8+L30 | Scalar | |||
L28=L12+L18 | OCC | Scalar | L32=L8+L12 | OCC | Scalar | +Z Dir | ||
L29=L12+L19 | OCC | Scalar | L33=-L12(NoRept) | OCC | Algebr | -Z Dir | ||
L30=L12+L120 | OCC | Scalar | L34=L2+L33 | Scalar |
Uniform Building Code(1997)ÀÇ Seismic Load ÇÕ¼º: SECTION 1633 - DETAILED SYSTEMS DESIGN REQUIREMENTS 1633.1 General. All structural framing systems shall comply with the requirements of Section 1629. . . . »ý·« . . . The requirement that orthogonal effects be considered may be satisfied by designing such e1ements for 100 percent of the prescribed design seismic forces in one direction plus 30 percent of the prescribed design seismic forces in the perpendicular direction. The combination requiring the greater component strength shall be used for design. Alternatively, the effects of the two Orthogonal directions may be combined on a square root of the sum of the squares (SRSS) basis. When the SRSS method of combining directional effects is used, each term computed shall be assigned the sign that will result in the most conservative result. Âü°í»çÇ×: ¹Ì±¹¿¬¹æ°ÇÃ๰ ³»ÁøÄÚµåÀÎ UBC(Uniform Building Code)´Â ICC¿¡¼ ¹ßÇàÇÑ IBC¿¡ Æ÷ÇԵǾú°í, ÀÌ UBC´Â ´õ ÀÌ»ó ¹ßÇàµÇÁö ¾Ê°Ô µÇ¾ú½À´Ï´Ù. IBC´Â 2000¿¡ ÃÊÆÇ, 2003³â°ú 2006³â¿¡ °³Á¤ÆÇÀÌ ¹ßÇàµÇ¾ú´Âµ¥, 2003³âÆÇ¿¡¼ ±ÔÁ¤ÇÑ À§ÀÇ Seismic LoadÀÇ ÇÕ¼º¿¡ ´ëÇÑ ºÎºÐÀº 2006³â °³Á¤ÆÇ¿¡¼ ´Ù·çÁö ¾Ê´Â °ÍÀ¸·Î º¸¾Æ ±× ³»¿ë¿¡ º¯ÇÔÀÌ ¾ø¾î º¸ÀÔ´Ï´Ù. ¹Ì Åä¸ñÇÐȸ(ASCE 7-95)ÀÇ Seismic Load ÇÕ¼º: 12.5 DIRECTION OF LOADING 12.5.3 Seismic Design Category C. Loading applied to structures assigned to Seismic Design Category C shall, as a minimum, conform to the requirements of Section 12.5.2 for Seismic Design Category B and the requirements of this section. Structures that have horizontal structural irregularity Type 5 in Table 12.3-1 shall use one of the following procedures: a. Orthogonal Combination Procedure. The structure shall be analyzed using the equivalent lateral force analysis procedure of Section 12.8, the modal response spectrum analysis procedure of Section 12.9, or the linear response history procedure of Section 16.1, as permitted under Section 12.6, with the loading applied independently in any two orthogonal directions and the most critical load effect due to direction of application of seismic forces on the structure is permitted to be assumed to be satisfied if components and their foundations are designed for the following combination of prescribed loads: 100 percent of the forces for one direction plus 30 percent of the forces for the perpendicular direction; the c ombination requiring the maximum component strength shall be used. b. Simultaneous Application of Orthogonal Ground Motion. The structure shall be analyzed using the linear response history procedure of Section 16.1 or the nonlinear response history procedure of Section 16.2, as permitted by Section 12.6, with orthogonal pairs of ground motion acceleration histories applied simultaneously. ¿©±â¿¡¼ Simultaneous ApplicationÀÌ ÀǹÌÇÏ´Â °ÍÀº X-Ãà°ú Z-ÃàÀÇ Seismic Load¸¦ SRSS·Î °áÇÕÇØ¾ß ÇÔÀ» ¶æÇÕ´Ï´Ù. Korea Building Code(2005)ÀÇ Seismic Load ÇÕ¼º: 0306.8.4 ÁöÁøÇÏÁßÀÇ ¹æÇâ . . . »ý·« . . . 0306.8.4.1ÀÇ ±ÔÁ¤À» ¸¸Á·ÇÏ¿©¾ß Çϸç, ƯÈ÷ <Ç¥ 0306.4.4>¿¡ ±ÔÁ¤µÈ Æò¸éºñÁ¤Çü À¯Çü 5¿¡ ÇØ´çÇÏ´Â ±¸Á¶¹°ÀÇ ¼³°èºÎÀç·ÂÀº ´ÙÀ½ÀÇ µÎ °¡Áö ¹æ¹ý Áß ÇÑ °¡Áö ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© °áÁ¤ÇÑ´Ù. (1) ÇÑ ¹æÇâ ÁöÁøÇÏÁß 100%¿Í Á÷°¢¹æÇâ ÇÏÁßÀÇ 30%¿¡ ´ëÇÑ ÇÏÁß È¿°úÀÇ Àý´ë°ªÀ» ÇÕÇÏ¿© ±¸ÇϵÇ, µÎ Á¶ÇÕ Áß Å« °ªÀ» ÅÃÇÑ´Ù. (2) Á÷±³ÇÏ´Â µÎ ¹æÇâ ÇÏÁß È¿°úÀÇ 100%¸¦ Á¦°öÇÕÁ¦°ö±Ù(SRSS) ¹æ¹ýÀ¸·Î Á¶ÇÕÇÑ´Ù. |
CAESAR-II Load Case Combination |
À§¿¡ º¸ÀÎ Iso DwgÀº, ³»°¡ °ú°Å µÎ¿øÇ÷£Æ® ¿£Áö´Ï¾î¸µ¿¡ ±Ù¹«ÇÒ ¶§ ÀÀ·Â Çؼ®À» ¼öÇàÇß´ø °ÍÀ¸·Î, ±º»ê Combined
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Load °ª ÀÌÇÏ·Î µÇµµ·Ï ÇÏ´Â °ÍÀº °ÅÀÇ ºÒ°¡´ÉÇÕ´Ï´Ù.
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Project: ±º»ê º¹ÇÕ½ÎÀÌŬ ¹ßÀü¼Ò | yGinEngrs 2007.12.27 | |||
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Load Cases | R e m a r k s | |||
L1=W | HGR | - |
Spring Support Load¸¦ ±¸ÇÏ´Â ¼ö½Ä |
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L2=W+D1+T1+P1 | HGR | - | ||
L3=WW+HP+H | HYD | Algebr | Load | |
L4=W+P1+H | SUS | Algebr | Sustained Load | |
L5=W+D1+T1+P1+H | OPE | Algebr | Steam TurbineÀÇ ¿îÀü ¸ðµå´Â »ó´çÈ÷ ´Ù¾çÇÏ´Ù. | |
L6=W+D2+T2+P1+H | OPE | Algebr | ||
L7=W+D3+T3+P1+H | OPE | Algebr | ||
L8=W+D4+T4+P1+H | OPE | Algebr | ||
L9=W+D5+T5+P1+H | OPE | Algebr | ||
L10=W+D6+T6+P1+H | OPE | Algebr | ||
L11=W+P1+H+U1 | OCC | Algebr | Sustained Load | |
L12=W+P1+H+U2 | OCC | Algebr | ||
L13=L11-L4 | OCC | Algebr | Net Seismic Load | |
L14=L12-L4 | OCC | Algebr | ||
L15=L13+L14 | OCC | SRSS |
XÃà°ú ZÃà Load¸¦ ÇÕ¼ºÇÑ´Ù. |
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L16=L5+L15 | OCC | Algebr |
¿îÀü ModeÀÇ Seismic Load |
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L17=L5-L15 | OCC | Algebr | ||
L18=L5-L4 | EXP | Algebr | Thermal Load Stress | |
L19=L4+L15 | OCC | Scalar | Seismic Load Stress | |
SRSS·Î ÇÕ(Sum)ÇÑ Net Seismic Load¸¦ ÁÖ Operation ModeÀÇ Load¿Í ÇÕÇÏ¸é ¿îÀü »óÅ¿¡¼ ¹ß»ýÇÑ (ÁöÁøÀÇ)
Seismic Support Load°¡ µË´Ï´Ù. ¶ÇÇÑ ÀÌ Seismic Load´Â -X°ú -ZÃàÀÇ ¹æÇâÀ¸·Îµµ ¹ß»ýÇÒ ¼ö ÀÖÀ½À¸·Î
Ope.Load(L5)¿¡ Net Seismic Load(L15)¸¦ »©ÁÖ´Â °Í(L17=L5-L15)µµ ÀØÁö ¾Ê¾Æ¾ß ÇÕ´Ï´Ù.
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ÀÌ ½Ä(1a)Àº SLÀÌ Sh¿Í °°Àº °æ¿ì, Áï, Sustained LoadÀÇ Stress °ªÀÌ Allowable °ªÀ»
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Sustained Stress °ª(SL)Àº Äڵ忡¼ ÁÖ¾îÁø Allowable Stress °ª(Sh)ÀÇ 60% ÀÌÇÏ°¡
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º¸ÀÎ ¼ö½Ä '1b'ÀÇ °ªÀÌ Àû¿ëµÈ´Ù.
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