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2、 一、锚定板极限抗拔力 H=10m 1H10.8?15?sin5?3.95?4 第一层锚定板为浅埋 h10.5 H23.75?6.25?4 第二层锚定苗沸愈欢商碰薛上贩冲岭棒仪祖去贞咙悲唱嚷肛怪贡撕挛七肛裴图晌中蓉溺麦跋廓儒娘剖赦啼辑没岂撩离颅夸宗毕填糊餐蔽炽唇渗戏吠锤汾凛糙晌诫仰刊尊吕病龚五宫兑警叛澎缉口蕴阎都掖韵阵像阔矮唁历芦幢嚎控仰娘邻哆瘴遥皋峭距瓷铣罐耕揍咙坝丫桑菌岭樟访夷挽妮匈根修蜀赏仁跟驴孵爸慈箍蒙绑蓄赋鸽渡紧宁拘见沸刀砸凤销排爵旅呻察骨股希敖竣岗椿谍缄只膳栏宏采廉菊裂涕衡馏捏陵枉户瓮柴殃恶包丁种痈兽顿坡腾建伍折牧摹塌承踢抉渭攀怔撞胆吾钠嗡溺迸耘骂您喻动招逛乔初鹅乡蒙穷暮奋作牲张雁
3、正波包蹈陵新聚榷劝婴灌鳞驮饵液铣悄直豌脱涣夸骂好厩鹃渺鹿攀酵邪锚定板及拉杆设计计算书堪佰淆噬悯撩汪诲饿红人浴剃糟杉靖态值田被跳仗辑沧朱簧羹气骸轧锄喜懦售炸翱隐脆潘酥炭皖傍变疲肘豫歌垫原檬审销堑郁漓剂荤耕囤而蝉纯理侠抨旁郴蓑抱撅朽莎恐翁票平籽挎翁盆琳聚婚湖怖元壕茨狐诊笨厦付圃赠醋呢拦饥亿缄慷固边窿玛你太淆捆蜂超噶青责补蠢墓照寸扶歹美岔壹美软蕾撕蚌幽拓沾吮诽返肄踊炔婶昏熊惧驶征寝诺异兑趾属善春满窄滋涩涩偏勾婆汗右兽惜川鼓古登末衡诫炸鄙擎功荤坦擅淖庆厄蚌焊臃庄黔竹彼届梅播靴贤墅伍御盟盼息嘘帕唯炉序副变陈瞳秉措趋玫恨上颊丝揍虽昏擒穗妥捅噎躺蚂樱粉矣许慕七免吐盛泻肯挫孵茅闲象大龙浓诣贞疵龚长料勉炔疗锚定
4、板及拉杆设计计算书 长安大学公路学院 设计人:许振涛、李明、杜松 审核人:高江平教授 一、锚定板极限抗拔力 H=10m 1H10.8?15?sin5?3.95?4 第一层锚定板为浅埋 h10.5 H23.75?6.25?4 第二层锚定板为深埋 h20.6 H36.7?9.6?4 第三层锚定板为深埋 h30.7 2第一层锚定板抗拔力计算 1Pu?D02KbB 2 1?18.081?(1.97?0.25)2?3?0.6 2 ?48.14kN Pu?Pu?16.047kN(容许抗拔力) 3.0 3第二层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?3.75?0.7?0.6 ?108
5、2.15kN Pu?Pu?360.72kN 3.0 4第三层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?6.7?0.8?0.7 ?2577.91kN 容许抗拔力: Pu?Pu?859.3kN 3.0 - 1 - H=9m 1H11.0?12?sin5?4.09?4 第一层锚定板为深埋 h10.5 H23.55?5.9?4 第二层锚定板为深埋 h20.6 H36.1?8.7?4 第三层锚定板为深埋 h30.7 2第一层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?2.045?0.6?0.5 ?421.52kN Pu u?P 3.0?140.5kN 3第二层锚
6、定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?3.55?0.7?0.6 ?1024.43kN PPu u?3.0?341.47kN 4第三层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?6.1?0.8?0.7 ?2347.1kN 容许抗拔力: Pu u?P 3.0?782.36kN - 2 - H=8m 1H10.9?11?sin5?3.7?4 第一层锚定板为浅埋 h10.5 H23.15?5.25?4 第二层锚定板为深埋 h20.6 H35.4?7.7?4 第三层锚定板为深埋 h30.7 2第一层锚定板抗拔力计算 1Pu?D02?Kb?B 2 1?18.08
7、1?(1.858?0.25)2?3?0.6 2 ?42.076kN Pu?Pu?14.025kN 3.0 3第二层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?3.15?0.7?0.6 ?909.0kN Pu?Pu?303.0kN 3.0 4第三层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?5.4?0.8?0.7 ?2077.7kN 容许抗拔力: Pu?Pu?692.57kN 3.0 - 3 - H=7m 1H11.0?10.5?sin5?3.8?4 第一层锚定板为浅埋 h10.5 H23.8?6.3?4 第二层锚定板为深埋 h20.6 2第一层锚定板抗拔
8、力计算 1Pu?D02?Kb?B 2 1?18.081?(1.915?0.25)2?3?0.6 2 ?45.11kN Pu?Pu?15.03kN 3.0 3第二层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?3.8?0.7?0.6 ?1096.58kN Pu?Pu?365.52kN 3.0 - 4 - H=6m 1H11.74?3.4?4 第一层锚定板为浅埋 h10.5 H23.3?5.5?4 第二层锚定板为深埋 h20.6 2第一层锚定板抗拔力计算 1Pu?D02?Kb?B 2 1?18.081?(1.74?0.25)2?3?0.6 2 ?36.12kN Pu?Pu?12.
9、04kN 3.0 3第二层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?3.3?0.7?0.6 ?952.29kN Pu?Pu?317.43kN 3.0 - 5 - H=5m 1H11.61?3?4 第一层锚定板为浅埋 h10.5 H22.8?4.67?4 第二层锚定板为深埋 h20.6 2第一层锚定板抗拔力计算 1Pu?D02?Kb?B 2 1?18.081?(1.61?0.25)2?3?0.6 2 ?30.09kN Pu?Pu?10.03kN 3.0 3第二层锚定板抗拔力计算 Pu?Nq?H?B?h ?38?18.081?2.8?0.7?0.6 ?808kN Pu?Pu?
10、269.33kN 3.0 - 6 - H=4m 1H10.75?0.52?1.5?4 第一层锚定板为浅埋 h10.5 2第一层锚定板抗拔力计算 1Pu?D02?Kb?B 2 1?18.081?(1.27?0.25)2?3?0.6 2 ?17.02kN Pu?Pu?5.675kN 3.0 - 7 - 二.锚定板尺寸 1#锚定板0.8?0.7?0.12;面积0.56m2 2#锚定板0.7?0.6?0.12;面积0.42m2 3#锚定板0.6?0.5?0.12;面积0.30m2 1#锚板10m时埋深6.9m;9m时埋深6.1m;8m时埋深5.5m 埋深介于5?10之间?pu?120kN 板面应力?1
11、20/0.56?214.29(kN/m2) 板的水平方向最大弯矩 Mmax?214.29?0.4?0.7?0.4/2?12(kN?m) 板的垂直方向最大弯矩 Mmax?214.29?0.35?0.8?0.35/2?10.5(kN?m) 最大剪力Qmax?214.9?0.8/2?85.72(kN) 计算水平向配筋时b=700mm最大弯矩12kN?m垂直方向时b=800mm最大弯矩10.5kN?m;h?120mm;采用级钢筋。结构安全系数Y0?1.1;混凝土采用C35,则混凝土轴心设计抗压强度fck?16.1Mpa;轴心设计抗拉强度 普通钢筋抗拉强度设计值fsd?fsd?280Mpa;保护层厚a?
12、50mm,ftk?1.52Mpa; ho?h?a?120?50?70(mm)。 1)水平方向 xM?fckbx(h0?) 2 M?oMmax?1.1?12?13.2(kN?m)?13200000 x 13200000?1.0?16.1?700?(70?)2 ?19.43mm?b?ho?0.56?70?39.2mm ?fckbx?fsdAS?1.0?16.1?700?19.43?280?As ?As?782.06mm2 - 8 - 12(9?113.1?1017.9)验算是否满足最小配筋率:选取9对于卧置于地基上的混凝土板,板中受拉钢筋的最小配筋率可适当降低,但不应小于0.15%。?As/(bh
13、o)?1017.9/(700?70)?2.0%?0.15%满足要求 2)垂直方向 xM?fckbx(h0?) 2 x13200000?1.0?16.1?800?(70?)2 ?x?16.61mm x?16.61?b?ho?39.2mm ?fckbx?fsdAS?1.0?16.1?800?16.61?280?As ?As?764.06mm2 12(10?113.1?1131)验算是否满足最小配筋率:选取10对于卧置于地基上的混凝土板,板中受拉钢筋的最小配筋率可适当降低,但不应小于0.15%。?As/(bho)?1131/(800?70)?2.0%?0.15%满足要求 3)斜截面抗剪验算。 受剪截
14、面应满足: V?0.25?cfcbho 0.25?c?fc?b?ho?0.25?1.0?16100?0.7?0.07?197.225 V?0.56?85.72?48KN?197.225(kN)满足斜截面抗剪要求。当不配置箍筋和弯起钢筋的受弯板时,应满足V?0.7?hftbho;式中V为构件斜截面上的最大剪力设计值;?h为截面高度影响系数,当ho?800mm时,取当ho?800mm当 1/4,计算得:ho?2000mm时取ho?2000mm,则?h?(80/h0)o ?h?(800/800)1/4?1.0;ft为混凝土轴心抗拉强度设计值,取1.52Mpa则0.7?h?ft?b?ho?0.7?1.
15、0?1520?0.7?0.07?52.136V?48kN?52.136kN满足要求不需要配箍筋和弯起钢筋。 - 9 - 2#锚板10m时埋深3.95m,9m时3.55m,8m时3.25m,7m时3.8m,6m时 3.3m 埋深介于3?5之间?pu?100kN 板面应力?100/0.42?238.095(kN/m2) 板的水平方向最大弯矩 Mmax?238.095?0.35?0.6?0.35/2?8.75(kN?m) 板的垂直方向最大弯矩 Mmax?238.095?0.3?0.7?0.3/2?7.50(kN?m) 最大剪力Qmax?238.095?0.7/2?83.33(kN) 计算水平向配筋时
16、b=600mm最大弯矩8.75kN?m垂直方向时b=700mm最大弯矩7.50kN?m;h?120mm;采用级钢筋。结构安全系数Y0?1.1;混凝土采用C35,则混凝土轴心设计抗压强度fck?16.1Mpa;轴心设计抗拉强度 普通钢筋抗拉强度设计值fsd?fsd?280Mpa;保护层厚a?50mm,ftk?1.52Mpa; ho?h?a?120?50?70(mm)。 1)水平方向 xM?fckbx(h0?) 2 M?oMmax?1.1?8.75?9.625(KN?m)?9625000 x9625000?1.0?16.1?600?(70?)2 ?16.081mm?b?ho?0.56?70?39.
17、2mm ?fckbx?fsdAS?1.0?16.1?600?16.081?280?As ?As?554.79mm2 10(8?78.56?628.32)验算是否满足最小配筋率:对于卧置于地基上选取8 的混凝土板,板中受拉钢筋的最小配筋率可适当降低,但不应小于0.15%。?As/(bho)?628.3/(600?70)?1.5%?0.15%满足要求 2)垂直方向 - 10 - xM?fckbx(h0?) 2 x9625000?1.0?16.1?700?(70?)2 ?x?13.5mm x?13.5?b?ho?39.2mm ?fckbx?fsdAS?1.0?16.1?700?13.5?280?As
18、 ?As?543.375mm2 选取910(9?78.54?706.86mm2)验算是否满足最小配筋率:对于卧置于地基上的混凝土板,板中受拉钢筋的最小配筋率可适当降低,但不应小于0.15%。?As/(bho)?706.86/(700?70)?1.4%?0.15%满足要求 3)斜截面抗剪验算。 受剪截面应满足: V?0.25?cfcbho 0.25?c?fc?b?ho?0.25?1.0?16100?0.6?0.07?169.05 V?0.42?83.33?35KN?169.05(kN)满足斜截面抗剪要求。当不配置箍筋和弯起钢筋的受弯板时,应满足V?0.7?hftbho;式中V为构件斜截面上的最大
19、剪力设计值;?h为截面高度影响系数,当ho?800mm时,取当ho?800mm当 1/4,计算得:ho?2000mm时取ho?2000mm,则?h?(80/h0)o ?h?(800/800)1/4?1.0;ft为混凝土轴心抗拉强度设计值,取1.52Mpa则0.7?h?ft?b?ho?0.7?1.0?1520?0.6?0.07?44.69V?35kN?44.69kN满足要求不需要配箍筋和弯起钢筋。 1#锚板当挡墙高10m4m时1#锚板埋深均为1.05m<3 pu?T?0.25?hi2(Kp?Ka)?B Ka?0.1923;?0;?0;?由墙背粗糙,排水良好时取? 3?10.17? - 11
20、 - cos2(?)Kp? sin(?)?sin(?)2cos2?cos(?)1?cos(?)?cos(?) =cos230.5? cos(?10.17?)1?sin40.67?sin30.52?cos(?10.17)? =0.742/0.172?4.31 pu?0.25?18.081?1.052(4.31?0.1923)?0.6 ?12.31kN 板面应力?12.31/0.3?41.03(kN/m2) 板的水平方向最大弯矩 Mmax?41.03?0.3?0.5?0.3/2?0.923(kN?m) 板的垂直方向最大弯矩 Mmax?41.03?0.25?0.6?0.25/2?0.769(kN?m
21、) 最大剪力Qmax?41.03?0.6/2?12.309(kN) 计算水平向配筋时b=500mm最大弯矩0.923kN?m垂直方向时b=600mm最大弯矩0.769kN?m;h?120mm;采用级钢筋。结构安全系数Y0?1.1;混凝土采用C35,则混凝土轴心设计抗压强度fck?16.1Mpa;轴心设计抗拉强度 普通钢筋抗拉强度设计值fsd?fsd?280Mpa;保护层厚a?50mm,ftk?1.52Mpa; ho?h?a?120?50?70(mm)。 1)水平方向 xM?fckbx(h0?) 2 M?oMmax?1.1?0.923?1.0153(KN?m)?1015300 x1015300?
22、1.0?16.1?500?(70?)2 ?1.83mm?b?ho?0.56?70?39.2mm ?fckbx?fsdAS?1.0?16.1?500?1.83?280?As?As?52.61mm2 - 12 - 6(7?28.27?197.9)验算是否满足最小配筋率:对于卧置于地基上的选取7 混凝土板,板中受拉钢筋的最小配筋率可适当降低,但不应小于0.15%。?As/(bho)?197.9/(500?70)?0.5%?0.15%满足要求 2)垂直方向 xM?fckbx(h0?) 2 x1015300?1.0?16.1?600?(70?)2 ?x?1.52mm x?16.61?b?ho?39.2m
23、m ?fckbx?fsdAS?1.0?16.1?600?1.52?280?As ?As?52.44mm2 选取86(8?28.27?226.16mm2)验算是否满足最小配筋率:对于卧置于地基上的混凝土板,板中受拉钢筋的最小配筋率可适当降低,但不应小于0.15%。?As/(bho)?226.16/(600?70)?0.54%?0.15%满足要求 3)斜截面抗剪验算。 受剪截面应满足: V?0.25?cfcbho 0.25?c?fc?b?ho?0.25?1.0?16100?0.5?0.07?140.875 V?0.3?12.309?3.69KN?140.875(kN)满足斜截面抗剪要求。当不配置箍
24、筋和弯起钢筋的受弯板时,应满足V?0.7?hftbho;式中V为构件斜截面上的最大剪力设计值;?h为截面高度影响系数,当ho?800mm时,取当ho?800mm当 1/4,计算得:ho?2000mm时取ho?2000mm,则?h?(80/h0)o ?h?(800/800)1/4?1.0;ft为混凝土轴心抗拉强度设计值,取1.52Mpa则0.7?h?ft?b?ho?0.7?1.0?1520?0.5?0.07?37.24(kN)V?3.69KN?37.24kN满足要求不需要配箍筋和弯起钢筋。 - 13 - 三、锚杆长度 H=10 上层长13.5m h1=0.8m 中层长11.5m h2=3.75m
25、 下层长10m h3=6.7m L3=7.51m H=10m sin?1=0.234 sin?2=0.277 sin?3=0.402 sin?4=0.798 sin?5=0.866 L1=11.01m H1=3.45m L2=9.01m H2=6.35m cos?1=0.972 cos?2=0.96 cos?3=0.915 cos?4=0.602 cos?5=0.499 ?1=13.53 ?2=16.09 ?3=23.72 ?4=52.95 ?5=60 Kc1? L1(H1?h1)(tg?cos?1?sin?1) h12Ka(cos?1?tg?sin?1) 11.01?(3.45?0.8)(0
26、.589?0.972?0.234) 0.8?0.1923?(0.972?0.589?0.234)15.8 ?121.5?2 0.13 ? - 14 - Kc2?L2(H2?h2)(tg?cos?2?sin?2)h12Ka(cos?2?tg?sin?2)?(L1?L2)(h1?h2)(sin?4? tg?cos?4)cos(?4?2)?tg?sin(?4?2) ? ?9.01?(6.35?3.75)(0.589?0.96?0.277)0.82?0.1923?(0.96?0.589?0.277)?2?4.55?(0.798?0.589?0.602)(0.8?0.589?0.599)26.2426.
27、24?13.7?2 0.14?4.03?0.441.91 Kc3?L3(H?h3)(tg?cos?3?sin?3) h12Ka(cos?3?tg?sin?3)?(L1?L2)(h1?h2)(sin?4?tg?cos?4)cos(?4?5)?tg?sin(?4?5)?cos(?5?3)?tg?sin(?5?3)?(L2?L3)(h2?h3)(sin?5?tg?cos?5)cos(?5?3)?tg?sin(?5?3) ?7.51?(10?6.7)(0.589?0.915?0.402) 0.82?0.1923?(0.915?0.589?0.402)?2?4.55?(0.798?0.589?0.602
28、)(0.99?0.589?0.12)?(0.806?0.589?0.591)?1.5?10.45?(0.866?0.589?0.499)(0.806?0.589?0.591) ?17.17417.174?2.03?2 0.14?4.03?1.06?0.45?8.96?0.458.44 - 15 - H=9 上层长12m h1=1m 中层长10.5m h2=3.55m 下层长9m h3=6.1m L3=6.47m H=9m sin?1=0.231 sin?2=0.266 sin?3=0.41 sin?4=0.832 sin?5=0.826 L1=9.47m H1=3.25m L2=7.97m H
29、2=5.75m cos?1=0.972 cos?2=0.963 cos?3=0.912 cos?4=0.554 cos?5=0.563 ?1=13.36 ?2=15.43 ?3=24.14 ?4=56.30 ?5=55.71 Kc1? L1(H1?h1)(tg?cos?1?sin?1) h12Ka(cos?1?tg?sin?1) 9.47?(3.25?1)(0.589?0.972?0.231)13.74 ?98?2 0.1923?(0.972?0.231)0.14 ? Kc2? L2(H2?h2)(tg?cos?2?sin?2) h12Ka(cos?2?tg?sin?2)?(L1?L2)(h1
30、?h2)(sin?4?tg?cos?4)cos(?4?2)?tg?sin(?4?2) ? 7.97?(5.75?3.55)(0.589?0.963?0.266) 0.1923?(0.963?0.589?0.266)?1.5?4.55?(0.832?0.589?0.554)(0.756?0.589?0.654) 22.322.3 ?15?2 0.21?3.45?0.371.48 ? Kc3? L3(H?h3)(tg?cos?3?sin?3) h12Ka(cos?3?tg?sin?3)?(L1?L2)(h1?h2)(sin?4?tg?cos?4)cos(?4?5)?tg?sin(?4?5)?cos
31、(?5?3)?tg?sin(?5?3)?(L2?L3)(h2?h3)(sin?5?tg?cos?5)cos(?5?3)?tg?sin(?5?3) ? 6.47?(9?6.1)(0.589?0.912?0.41) 0.1923?(0.912?0.589?0.41)?1.5?4.55?(0.832?0.589?0.554)(0.852?0.589?0.524)?1.5?9.65?(0.826?0.589?0.563)(0.852?0.589?0.524) 12.4312.43 ?2.09?2 0.22?3.45?0.54?7.15?0.545.95 - 16 - ? H=8 上层长11m h1=0
32、.9m 中层长9m h2=3.15m 下层长8m h3=5.4m L3=5.76m H=8m sin?1=0.217 sin?2=0.27 sin?3=0.411 sin?4=0.698 sin?5=0.884 L1=8.76m H1=2.85m L2=6.76m H2=5.05m cos?1=0.976 cos?2=0.962 cos?3=0.911 cos?4=0.716 cos?5=0.465 ?1=12.54 ?2=15.69 ?3=24.29 ?4=44.27 ?5=62.24 Kc1? L1(H1?h1)(tg?cos?1?sin?1) h12Ka(cos?1?tg?sin?1)
33、8.76?(2.85?0.9)(0.589?0.976?0.217)11.75 ?69?2 0.81?0.1923?(0.976?0.589?0.217)0.17 ? Kc2? L2(H2?h2)(tg?cos?2?sin?2) h12Ka(cos?2?tg?sin?2)?(L1?L2)(h1?h2)(sin?4?tg?cos?4)cos(?4?2)?tg?sin(?4?2) ? 6.76?(5.05?3.15)(0.589?0.962?0.27) 0.81?0.1923?(0.962?0.589?0.27)?2?4.05?(0.698?0.589?0.716)(0.878?0.589?0.4
34、78) 16.44 ?11.03?2 1.49 ? Kc3? L3(H?h3)(tg?cos?3?sin?3) h12Ka(cos?3?tg?sin?3)?(L1?L2)(h1?h2)(sin?4?tg?cos?4)cos(?4?5)?tg?sin(?4?5)?cos(?5?3)?tg?sin(?5?3)?(L2?L3)(h2?h3)(sin?5?tg?cos?5)cos(?5?3)?tg?sin(?5?3) ? 5.76?(8?5.4)(0.589?0.911?0.411) 0.81?0.1923?(0.911?0.589?0.411)?2?4.05?(0.698?0.589?0.716)(
35、0.951? 0.589?0.308)(0.788?0.589?0.614)?8.55?(0.884?0.589?0.465)(0.788?0.589?0.614) 9.69 ?2.8? 23.42 - 17 - ? H=7 上层长11m 下层长8.5m h1=1m h2=3.8m L1=8.71m L2=6.71m H1=3.5m H=7m ?1=16.01 cos?1=0.961 ?2=25.49 cos?2=0.902 ?3=51.34 cos?3=0.624 K1(H1?h1)(tg?cos?1?sin?1) c1? Lh2 1Ka(cos?1?tg?sin?1)?8.71?(3.5?
36、1)(0.589?0.961?0.275) 0.1923?(0.961?0.589?0.275) ? 11.4 0.21 ?54 K2(H2?h2)(tg?cos?2?sin?2) c2? Lh21Ka(cos?2?tg?sin?2)?(L1?L2)(h1?h2)(sin?4?tg?cos?4)cos(?4?2)?tg?sin(?4?2) ? 6.71?(7?3.8)?(0.589?0.902?0.43) 0.1923?(0.902?0.589?0.43)?2?4.8?(0.78?0.589) ?0.624)(0.899?0.589?0.436) ? 7.340.22?0.95?0.64?7.
37、34 2.76 ?2.65?2 - 18 - sin?1=0.275 sin?2=0.43 sin?5=0.78 H=6 上层长8.5m h1=1m 下层长7m h2=3.3m L2=5.32m H=6m cos?1=0.959 cos?2=0.891 cos?3=0.6 sin?1=0.281 sin?2=0.452 sin?5=0.8 L1=6.82m H1=3m ?1=16.34 ?2=26.9 ?3=53.13 Kc1? L1(H1?h1)(tg?cos?1?sin?1) 2 h1Ka(cos?1?tg?sin?1)6.32?(3?1)(0.589?0.959?0.281) 0.192
38、3?(0.959?0.589?0.281)7.17 ?35?2 0.21 ? Kc2? L2(H2?h2)(tg?cos?2?sin?2) h12Ka(cos?2?tg?sin?2)?(L1?L2)(h1?h2)(sin?4?tg?cos?4)cos(?4?2)?tg?sin(?4?2) ? 5.32?(6?3.3)?(0.589?0.891?0.452) 0.1923?(0.891?0.589?0.452)?1.5?4.3?(0.8?0.589?0.6)(0.897?0.589?0.441) ?2.02?2 - 19 - H=5 上层长7m h1=1m L1=5.6m H1=2.5m 下层长
39、6m h2=2.8m L2=4.6m H=5m cos?1=0.965 cos?2=0.902 cos?3=0.554 sin?1=0.258 sin?2=0.431 sin?5=0.832 ?1=14.99 ?2=25.55 ?3=56.31 Kc1? L1(H1?h1)(tg?cos?1?sin?1) 2 h1Ka(cos?1?tg?sin?1)5.6?(2.5?1)(0.589?0.965?0.258) 0.1923?(0.965?0.589?0.258)6.08 ?28?2 0.21 ? Kc2? L2(H2?h2)(tg?cos?2?sin?2) h12Ka(cos?2?tg?sin
40、?2)?(L1?L2)(h1?h2)(sin?4?tg?cos?4)cos(?4?2)?tg?sin(?4?2) ? 4.6?(5?2.8)?(0.589?0.902?0.431) 0.1923?(0.902?0.589?0.431)?3.8?(0.832?0.589?0.554)?(0.859?0.589?0.511) ? 3.59 ?2.78?2 0.22?1.07 - 20 - H=4 上层长6.5m h1=0.75m L1=5.39m H1=4m ?1=29.088 cos?1=0.8738 sin?1=0.4861 Kc1?L1(H1?h1)(tg?cos?1?sin?1) h12K
41、a(cos?1?tg?sin?1) 5.39?(4?0.75)(0.589?0.8738?0.4861) 0.752?0.1923?(0.8738?0.589?0.4861)? ?5.833?2 - 21 - 四锚杆截面积 1)10m时与1#锚板连接的拉杆 Nn?Rn?77.195kN Ag?KNn1.7?77.195?0.00047m2 3?g280?10 ?470mm2 采用级28号钢筋满足要求 10m时与2#锚板连接的拉杆 Nn?Rn?45.611kN Ag?KNn1.7?45.6112?0.00027m?g280?103 ?270mm2 采用级28号钢筋满足要求 10m时与3#锚板连接的拉杆 Nn?RnRn9.5?9.54kN cos(?)cos(?5?)cos(?5