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幕墻穿孔金屬面板及其背襯板的風荷載調整系數和計算方法研究

王超 劉軍進 喬彬 殷剛 李滇 李建輝

王超, 劉軍進, 喬彬, 殷剛, 李滇, 李建輝. 幕墻穿孔金屬面板及其背襯板的風荷載調整系數和計算方法研究[J]. 工程力學, 2023, 40(10): 141-153. doi: 10.6052/j.issn.1000-4750.2022.01.0082
引用本文: 王超, 劉軍進, 喬彬, 殷剛, 李滇, 李建輝. 幕墻穿孔金屬面板及其背襯板的風荷載調整系數和計算方法研究[J]. 工程力學, 2023, 40(10): 141-153. doi: 10.6052/j.issn.1000-4750.2022.01.0082
WANG Chao, LIU Jun-jin, QIAO Bin, YIN Gang, LI Dian, LI Jian-hui. STUDY ON WIND LOAD ADJUSTMENT COEFFICIENT AND CALCULATION METHOD OF PERFORATED METAL PANEL AND ITS BACKING PLATE OF CURTAIN WALL[J]. Engineering Mechanics, 2023, 40(10): 141-153. doi: 10.6052/j.issn.1000-4750.2022.01.0082
Citation: WANG Chao, LIU Jun-jin, QIAO Bin, YIN Gang, LI Dian, LI Jian-hui. STUDY ON WIND LOAD ADJUSTMENT COEFFICIENT AND CALCULATION METHOD OF PERFORATED METAL PANEL AND ITS BACKING PLATE OF CURTAIN WALL[J]. Engineering Mechanics, 2023, 40(10): 141-153. doi: 10.6052/j.issn.1000-4750.2022.01.0082

幕墻穿孔金屬面板及其背襯板的風荷載調整系數和計算方法研究

doi: 10.6052/j.issn.1000-4750.2022.01.0082
基金項目: 中建研科技股份有限公司青年基金項目(20211902971030042);中國建筑科學研究院有限公司青年科研基金項目(20190122331030005)
詳細信息
    作者簡介:

    王 超(1986?),男,河北人,高工,工學碩士,設計師,主要從事圍護結構設計與研究(E-mail: wangchao@cabrtech.com)

    喬 彬(1985?),男,北京人,高工,工學學士,設計師,主要從事圍護結構設計與研究(E-mail: qiaobin@cabrtech.com)

    殷 剛(1971?),男,江蘇人,工程師,工學學士,設計師,主要從事圍護結構設計與研究(E-mail: yingang@cabrtech.com)

    李 滇(1981?),男(彝族),云南人,正高工,工學學士,所長,主要從事圍護結構設計與研究(E-mail: lidian@cabrtech.com)

    李建輝(1981?),男,江西人,研究員,工學博士,主任,主要從事高層建筑結構、圍護結構設計與研究(E-mail: lijianhui@cabrtech.com)

    通訊作者:

    劉軍進(1974?),男,江蘇人,研究員,工學博士,董事長,主要從事高層建筑結構、圍護結構研究(E-mail: liujunjin@cabrtech.com)

  • 中圖分類號: TU312+.1

STUDY ON WIND LOAD ADJUSTMENT COEFFICIENT AND CALCULATION METHOD OF PERFORATED METAL PANEL AND ITS BACKING PLATE OF CURTAIN WALL

  • 摘要: 幕墻穿孔金屬面板及其背襯板的風荷載取值,以及穿孔板本身變形、應力的計算方法,在現行設計規范中尚無規定。該文完成了三組共計11個工況的風洞試驗研究;分析得到了穿孔率、風速、風向角、背襯板間距對穿孔單板、前面板、背襯板所受風荷載大小的影響規律;提出了在現行規范風荷載標準值計算公式基礎上乘以多個調整系數的方法,用以計算幕墻穿孔金屬板及其背襯板所受的風荷載值,并給出了調整系數的取值或計算公式;完成了144個穿孔金屬板的有限元分析,揭示了穿孔率、長寬比、荷載大小對穿孔金屬薄板變形值、應力值的影響規律;基于現行規范對非穿孔金屬薄板大撓度變形值、應力值的計算方法,提出了用于計算不同穿孔率金屬薄板變形值和應力值的調整系數。
  • 圖  1  穿孔金屬板的應用案例

    Figure  1.  Engineering application case of perforated metal plate

    圖  2  試驗用面板

    Figure  2.  Panels for test

    圖  3  面板固定與替換示意

    Figure  3.  Schematic diagram of panel fixing and replacement

    圖  4  風向角與測力天平坐標示意圖

    Figure  4.  Schematic diagram of wind direction angle and balance coordinates

    圖  5  穿孔板與背襯板距離示意圖

    Figure  5.  Schematic diagram of distance between perforated plate and backing plate

    圖  6  非固定鋼架的壓重處理

    Figure  6.  Steel frame fixed by counterweight

    圖  7  穿孔率影響趨勢圖

    Figure  7.  Influence trend of perforation rate

    圖  8  不同面板風荷載變化趨勢對比

    Figure  8.  Comparison of wind load variation trend of different panels

    圖  9  風速影響趨勢圖

    Figure  9.  Wind speed influence trend

    圖  10  風向角影響趨勢圖

    Figure  10.  Influence trend of wind direction angle

    圖  11  不同角度時背襯板直接承受風荷載情況示意

    Figure  11.  Schematic diagram of the backing plate directly bearing the wind load at different angles

    圖  12  背襯板距離影響趨勢圖

    Figure  12.  Influence trend of backing plate distance

    圖  13  前面板穿孔率影響系數擬合曲線

    Figure  13.  Fitting curve of influence coefficient of perforation rate of front panel

    圖  14  背襯板穿孔率影響系數擬合曲線

    Figure  14.  Fitting curve of influence coefficient of perforation rate of backing plate

    圖  15  背襯板直接與非直接承受風荷載的寬度范圍

    Figure  15.  Width range of backing plate under direct and indirect wind load

    圖  16  背襯板距離對前面板的影響系數擬合曲線

    Figure  16.  Fitting curve of influence coefficient of backing plate spacing on front panel

    圖  17  背襯板距離對背襯板的影響系數擬合曲線

    Figure  17.  Fitting curve of influence coefficient of backing plate spacing on backing plate

    圖  18  模型邊界條件示意圖

    Figure  18.  Schematic diagram of model boundary conditions

    圖  19  有限元分析模型 /mm

    Figure  19.  Finite element analysis model

    圖  20  金屬薄板變形、應力隨Q值的變化規律

    Figure  20.  Variation of deformation and stress of thin metal plate with Q

    圖  21  $ b/a = 1.0 $時,穿孔板變形調整系數的變化規律

    Figure  21.  Variation law of deformation adjustment coefficient of perforated plate when b/a = 1.0

    圖  22  $ b/a = 1.5 $時,穿孔板變形調整系數的變化規律

    Figure  22.  Variation law of deformation adjustment coefficient of perforated plate when b/a = 1.5

    圖  23  $ b/a = 2.0 $時,穿孔板變形調整系數的變化規律

    Figure  23.  Variation law of deformation adjustment coefficient of perforated plate when b/a = 2.0

    圖  24  $ b/a = 1.0 $時,穿孔板應力調整系數的變化規律

    Figure  24.  Variation law of stress adjustment coefficient of perforated plate when b/a = 1.0

    圖  25  $ b/a = 1.5 $時,穿孔板應力調整系數的變化規律

    Figure  25.  Variation law of stress adjustment coefficient of perforated plate when b/a = 1.5

    圖  26  $ b/a = 2.0 $時,穿孔板應力調整系數的變化規律

    Figure  26.  Variation law of stress adjustment coefficient of perforated plate when b/a = 2.0

    圖  27  $ b/a = 1.0 $,Q≤200時,η的擬合結果

    Figure  27.  Fitting results of η, when b/a =1.0, Q≤200

    圖  28  $ b/a = 1.0 $,200<Q≤400時,η的擬合結果

    Figure  28.  Fitting results of η, when b/a =1.0, 200<Q≤400

    圖  29  $ b/a = 1.5 $,Q≤200時,η的擬合結果

    Figure  29.  Fitting results of η, when b/a =1.5, Q≤200

    圖  30  $ b/a = 1.5 $,200<Q≤400時,η的擬合結果

    Figure  30.  Fitting results of η, when b/a =1.5, 200<Q≤400

    圖  31  $ b/a = 2.0 $,Q≤200時,η的擬合結果

    Figure  31.  Fitting results of η, when b/a =2.0, Q≤200

    圖  32  $ b/a = 2.0 $,200<Q≤400時,η的擬合結果

    Figure  32.  Fitting results of η, when b/a =2.0, 200<Q≤400

    圖  33  $ b/a = 1.0 $時,θ的擬合結果

    Figure  33.  Fitting results of θ, when b/a =1.0

    圖  34  $ b/a = 1.5 $時,θ的擬合結果

    Figure  34.  Fitting results of θ, when b/a =1.5

    圖  35  $ b/a = 2.0 $時,θ的擬合結果

    Figure  35.  Fitting results of θ, when b/a =2.0

    表  1  面板編號及穿孔率

    Table  1.   Panel number and perforation rate

    編號S0S1S2S3S4S5S6S7S8
    穿孔率α00.0710.1380.1720.2290.2970.3560.4080.535
    下載: 導出CSV

    表  2  試驗工況及變量

    Table  2.   Test conditions and variables

    分組工況號固定量變量
    第一組 1 β=0°
    v=8 m/s
    α=0、0.071、0.138、0.172、0.229、0.297、0.356、0.408、0.535
    2 α =0.297
    β=0°
    v=4 m/s、6 m/s、8 m/s、10 m/s
    3 α =0.297
    v=8 m/s
    β=0°、15°、30°、45°、60°、75°、90°
    第二組
    (測試背襯板
    風荷載)
    4 L=175 mm
    β=0°
    v=8 m/s
    α =0.071、0.138、0.172、0.229、0.297、0.356、0.408、0.535
    5 L=175 mm
    β=0°
    α =0.297
    v=4 m/s、6 m/s、8 m/s、10 m/s
    6 α =0.297
    β=0°
    v=8 m/s
    L=175 mm、250 mm、400 mm、600 mm、1000 mm
    7 α =0.297
    L=175 mm
    v=8 m/s
    β=0°、15°、30°、45°、60°、75°、90°
    第三組
    (測試前面板
    風荷載)
    8 L=175 mm
    β=0°
    v=8 m/s
    α =0.071、0.138、0.172、0.229、0.297、0.356、0.408、0.535
    9 L=175 mm
    β=0°
    α =0.297
    v=4 m/s、6 m/s、8 m/s、10 m/s
    10 α =0.297
    β=0°
    v=8 m/s
    L=175 mm、250 mm、400 mm、600 mm、1000 mm
    11 α=0.297
    L=175 mm
    v=8 m/s
    β=0°、15°、30°、45°、60°、75°、90°
    下載: 導出CSV

    表  3  不同面板風荷載隨風速變化曲線斜率

    Table  3.   Curve slope of wind load on different panels with wind speed

    面板種類斜率影響系數$ {\lambda _v} $
    單板0.161 011.00
    背襯板0.058 910.37
    前面板0.130 030.81
    下載: 導出CSV

    表  4  有限元分析模型信息

    Table  4.   Information of finite element analysis model

    b/mma/mm板面積/mm2穿孔率Q
    500 500 250 000 0.0
    0.1
    0.2
    0.3
    0.4
    0.5
    1
    10
    20
    40
    120
    200
    300
    400
    750 500 375 000
    1000 500 500 000
    下載: 導出CSV

    黑人大屌丝逼逼
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  • 收稿日期:  2022-01-17
  • 修回日期:  2022-06-24
  • 錄用日期:  2022-07-08
  • 網絡出版日期:  2022-07-08
  • 刊出日期:  2023-10-10

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