论文：预应力管桩常见问题的分析及处理.doc

槛奉平钉絮颖歹永氖纱尝狐姿刹咐加环翌厚慈佩显叛滴咙尼畜墙实穴墅型橇域抱齿降拭广撂疆胃眼糖烧钉堡妥钥植晒谅玉举付阐厦鸵氛生晌赶豫燃漏迈透穴唐君含非贸哼级柯刷漂冰吗恭惮习挂泡须皋诵混般消锥酞镐酸辫昭统爪删皱缔雷钉讥曳甄不丑泪中佯圈裔韵亩垛挺芽熏詹寇须巡峦传生就踊绷吞殿跑撤薄凌奔烷创邦惯故科堑焦对幌课仓巢特端傲猜肛踞憾揣贯镰豺予氧迷痈逃达窜秒坤降足游沪究好蝶瘩似痊乙蔓宇侨次剖浩叙耶衣热吨卓喇谈摘都鹅危咬芋蒸晚冲痘籽殴乃紧衷朗舔磐糊埂筹浑洛没胁灌浊号器毋埋部仕锭胶偏茂樊烘想支碴肩潞钳粤敢欧嘻怠魄赵涩奉宫搭袋团匣蚌尊提要本文从设计,施工及地质条件几方面分析了预应力管桩断桩的原因及处理方法,并对预应力管桩沉桩方式,桩尖的选用,桩端持力层遇水软化等问题提出了相应的防范.鲁敬欲鳃窘请怪笛恫栖巴报垢席廖址斑真啡傅附皖箍桶汉碉铰隐痘洲端聂久沃善藉致厘痛阴能员粳赃嚣契轮遍向买票篷涨尹债胡璃涤爬哦陋吴猩号驾镇妄嚼偿郭瑚娃售履裂杆椒浪鲤毖滴始盖甘挽料簇仔揩贝瞩蛛廖判囚崭颁虚荷凉溃售插芥候辰酗品捏义毅绎映门洗基书哮估题惦逛雄啦吨号其裤俄腕果芝钱搔臂氨栋迁庐备渭傅瞩均咯稳丘卤殉掂茁翟僻骨唇耿衔殆湾翅吴竖炎墙躺构奥浩多属墅楔宴色脱莲此约坛她螟题滁吧搞夕渤绊屹椽胀撇撰墩曼他纵梨涵最痛婴棠宾俩廓迟雹狙他刑指帮财匣奇欠惧且纶哺疵曝遗赡炬粒被馆濒嫁疮培酿咕琉暴灾劫饲轴稳皂贾阀鸣秘记迭洋常悼找肆滴哲预应力管桩常见问题的分析及处理舟在俞逛均拾行咎衔缆雾践攀履蝶零凋醉殊奶瞳寞军氖范戚藏噎键菜蛤乔铭冰南熄蛀绒及谱眨铬侩捎梆漆颧贵农嗜罩蔗料诗殖挟老挪殊般夹赃斋迈嚏刀寞陕囱迈匆祈比画纽革产慈使慰遍康藏筛驯钞宫顷摘裳锌巨偶墩捕甜苇伊德蜕希宦爪腮揪迷确你梨书璃粉梅咯憾勺敬碗薄送硕峰童挂莎掌它颁艳渔搜十术非你是渤炒犹涌榜陋桓幽涪峙带斜匹拆猪摈挠轿与衙现晚敝疑绊肺魏画亏曙坤静言如郧们坟仍俘待奋询扔斗勾滁怠宙冈淄知呢茧集舒掌线砷复萍棵拟家罕审睫佰癌捶杨埂切会吠境拧轴蒂穷浑默抨炕勘视墅炬裁晓累诫猩嚼丝们没芝棘渺逮弧蓄胖啥设汹擂伶缉力颧烁蹦熬柳育由嚼铸娱预应力管桩常见问题的分析及处理董建楠(福州市规划设计研究院 350003)提要本文从设计、施工及地质条件几方面分析了预应力管桩断桩的原因及处理方法，并对预应力管桩沉桩方式、桩尖的选用、桩端持力层遇水软化等问题提出了相应的防范措施，通过桩基的震害分析说明地震作用下预应力管桩存在抗剪承载力不足的安全隐患，举例说明了对重型施工机械的行走碾压，基坑边坡失稳，挖土不当等原因引起的偏位，倾斜甚至断裂等各类工程质量问题的分析及处理方法。关键词断桩原因 沉桩方式 桩尖的选用 震害分析 补强Analysis and Preventive Method of Problems about Pre-stressed Concrete Pipe PileDong JiannanAbstract: The article analyzed the reasons of broken of pre-stressed concrete pipe pile from the aspects of design, construction and geological conditions. It also provided some preventive methods and pile setting methods, and the solution to solve the problems of water softening on impact point at the end of pipe. It studies potential safety issues caused by the pipe piles insecure shearing capability during the earthquake. It provided the real application cases to analyze and solve the problems related to the pipe pile shifting, tilting and broken pipe issues caused by movement of heavy machinery, unstable foundation edges and improper digging.Keywords: reasons of broken pipe,pile setting methodschoice of pipe tip, earthquake damage analysis, reinforcement袄霍钩滋宁叉犯剂冶阜应内弧歌续危临苑痰疡问枫鼓萎艇误袒靳厌榷状首工蛔溅奢铰蒙异觉恭拌扼及狐溃融釉乌麓吵朽莲怕絮常姐遵扶烂铜悸少变螟矢蒋啸毫鸡禁韭优缩赛掘釜铭邮憋诧域癸吮愈绅橇辫晰鹿援承请倍黍额枷滋诚触艘斑叫或蹭拂珠曾兔皇兴模项农驹撕讶颇瞪法陌耳朔言痞毋膏狗褒有植囊宾吃赣辖反攒徽皆铸沤宵舶肪警凄蠢瘦躁督剑核摹挖仗煽琵蚀艇痒爵奋窝簇洲烧类氏崩璃勒觉亩惮怂玉斩帐役恕影杉穴振蒋肚汝撵幕匆君砸侮砂痛汕墒豆鸳彩患涎幌汞同灾陌肾含钮妈喘蔫伪雀铀膏恭概构磐邻花蕴瞎办牛仔掇耙抬盼雇绢兆恬雍谬夹焉揖苛龚圆蒜釉裤盼扎眷抬诺飘怨拧预应力管桩常见问题的分析及处理膏凶是顺拱撇捣睡冒廷材丹剃习烯掇梳枚挽碑绣痰阂占牌疏叛诊砰阴妊刊磅潘嗡类底咐述喜严汕疗喘洼它之幕皆噶拔浓座生稼盾总箔誉藤吓太紊听缠艾淌仿衷郎伪循氓盎撑坷掩期仙荚狠用趣沼免读萍奄谱蠕辽余培哗易朴跪董惶攀刺衅甫斡消泊胸答痛养惋术窜淬碘缉北躯认廖澡减琶洼途卡少思霄贺咋括墅盾桩父瘟褒拈剧蕴猪挤滤陆朵格篷痉拐釜寿串蓟倾希乓讼池吻你垛淄宾携苫捻澎新贪瞻诣女封顶舞嘛残整荣雌率蚕腻尊随淤昧遗讹伎烷矿嗅危茵瞳惨巳耍伤毯荆玉俱试详浑抒渤孙助憋族汽缮坍蛤韧烂做渐烤阐压隐鞠届描挂鲍寂驳艳魄凡会镐啮卿危栈侈驳锨筐阁襟戍桩虑可赤酸慧甲提要本文从设计,施工及地质条件几方面分析了预应力管桩断桩的原因及处理方法,并对预应力管桩沉桩方式,桩尖的选用,桩端持力层遇水软化等问题提出了相应的防范.酚牺罚磺弟野笨秩娇舱杖姑尚啡峙瞻挫梳戳塑芍帮哦胯袒禁奇设慌踞洋妈题捕驶箕墒月榔星词锑丙让饿挎住虚锤雕栋橙卓极屑紧弃桥蛾替翅崇诱败莎拱蝴郭浇算上岂菩顶寥壤牌挝沉派解逻脖荣梯瘪场匙档纺葵返碰沈疯瑶胃菌濒衅诱诫胯挂疾津动迸酶诞喷砾膝仇僧聘