CN204003293U - 一种抗打桩冲击的法兰结构 - Google Patents

一种抗打桩冲击的法兰结构 Download PDF

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CN204003293U
CN204003293U CN201420332711.4U CN201420332711U CN204003293U CN 204003293 U CN204003293 U CN 204003293U CN 201420332711 U CN201420332711 U CN 201420332711U CN 204003293 U CN204003293 U CN 204003293U
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孙杏建
郇彩云
姜贞强
罗金平
赵朝
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Hydrochina East China Engineering Corp
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Hydrochina East China Engineering Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

本实用新型涉及一种抗打桩冲击的法兰结构。本实用新型的目的是提供一种抗打桩冲击的法兰结构,旨在使打桩冲击力作用于桩顶上部的法兰钢管上,以减小冲击荷载直接作用于法兰面上引起的应力集中,同时增加法兰刚度,满足打桩锤击力的作用要求。本实用新型的技术方案是:抗打桩冲击的法兰结构,包括钢管桩、连接在钢管桩顶部的法兰钢管、通过双螺帽高强螺栓和法兰连接的上节塔筒,其特征在于:所述法兰钢管在不到钢管顶部的内壁设置圆环盘,圆环盘上设有螺栓孔,并通过圆环盘上部的矩形加强板和下部的三角形加强板使圆环盘、矩形加强板、三角形加强板与法兰钢管连接成整体,所述圆环盘与上节塔筒的底部法兰之间经双螺帽高强螺栓连接。

Description

一种抗打桩冲击的法兰结构
技术领域
本实用新型涉及一种抗打桩冲击的法兰结构。适用于海上风电工程。
背景技术
海上风力发电行业在国内迅速发展起来,法兰螺栓连接是陆上、海上风电中多节塔筒的常用连接方式。常规的法兰设计基本采用倒L型,将多节塔筒通过高强螺栓连接成整体。但随着风电机组单机容量的不断增加,常规的倒L型法兰厚度增加很大,给法兰的加工制作带来了很大的困难,且海上风电行业常见的单桩基础直径较大,若打桩锤击力直接作用于桩顶法兰,传统的倒L型法兰产生的局部应力集中非常大,难以满足打桩要求。
发明内容
本实用新型要解决的技术问题是:提供一种抗打桩冲击的法兰结构,旨在使打桩冲击力作用于桩顶上部的法兰钢管上,以减小冲击荷载直接作用于法兰面上引起的应力集中,同时增加法兰刚度,满足打桩锤击力的作用要求。
本实用新型所采用的技术方案是:一种抗打桩冲击的法兰结构,包括钢管桩、连接在钢管桩顶部的法兰钢管、通过双螺帽高强螺栓和法兰连接的上节塔筒,其特征在于:所述法兰钢管在不到钢管顶部的内壁设置圆环盘,圆环盘上设有螺栓孔,通过圆环盘上部的矩形加强板和下部的三角形加强板使圆环盘、矩形加强板、三角形加强板与法兰钢管连接成整体,所述圆环盘与上节塔筒的底部法兰之间经双螺帽高强螺栓连接。
所述法兰钢管直径与钢管桩直径一致,直径为
所述圆环盘厚度为40~80mm。
本实用新型的有益效果是:本法兰结构将法兰钢管的顶部设计成横置的T形,这样打桩的冲击力就作用在法兰钢管的钢管顶部(冲击力直接传递至下部的钢管桩)而不是直接作用于法兰面上,减小了法兰面上的应力集中。因桩顶受力时应力传递路径的改善,解决了桩顶设置法兰时,打桩局部应力集中过大的问题。此外,本结构增加了法兰的刚度,可满足打桩锤击力的要求。
附图说明
图1是本实用新型的立面图。
图2是图1的Ⅰ-Ⅰ剖视图。
图3是图2中A部放大图。
具体实施方式
如图1-3所示,本实施例的法兰结构,包括钢管桩7和焊接在钢管桩顶部的法兰钢管1,法兰钢管1直径与钢管桩7直径一致,直径为两者在工厂焊接成整体。
所述法兰钢管1在不到钢管顶部的内壁设置圆环盘2,圆环盘为铸造法兰盘,其上预留螺栓孔。为加强法兰结构强度,采用上部设置矩形加强板4、下部设置三角形加强板3的方法使圆环盘、矩形加强板、三角形加强板与法兰钢管1连接成整体。
本例用双螺帽高强螺栓5穿过上节塔筒6的底部法兰和圆环盘2上预留的螺栓孔,螺栓两端用螺帽拧紧。
所述圆环盘2厚度经过计算确定,本例为40~80mm。双螺帽高强螺栓5的组数、直径等通过桩径和上部荷载确定。

Claims (3)

1.一种抗打桩冲击的法兰结构,包括钢管桩(7)、连接在钢管桩顶部的法兰钢管(1)、通过双螺帽高强螺栓(5)和法兰连接的上节塔筒(6),其特征在于:所述法兰钢管(1)在不到钢管顶部的内壁设置圆环盘(2),圆环盘上设有螺栓孔,通过圆环盘上部的矩形加强板(4)和下部的三角形加强板(3)使圆环盘、矩形加强板、三角形加强板与法兰钢管(1)连接成整体,所述圆环盘(2)与上节塔筒(6)的底部法兰之间经双螺帽高强螺栓(5)连接。
2.根据权利要求1所述的抗打桩冲击的法兰结构,其特征在于:所述法兰钢管(1)直径与钢管桩(7)直径一致,直径为
3.根据权利要求1或2所述的抗打桩冲击的法兰结构,其特征在于:所述圆环盘(2)厚度为40~80mm。
CN201420332711.4U 2014-06-20 2014-06-20 一种抗打桩冲击的法兰结构 Expired - Fee Related CN204003293U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159054A (zh) * 2019-03-19 2019-08-23 中国电力科学研究院有限公司 一种含预应力钢丝的钢管法兰结构及制作方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159054A (zh) * 2019-03-19 2019-08-23 中国电力科学研究院有限公司 一种含预应力钢丝的钢管法兰结构及制作方法

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Inventor after: Jiang Zhenqiang

Inventor after: Luo Jinping

Inventor after: Zhao Chaozhi

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Free format text: CORRECT: INVENTOR; FROM: SUN XINGJIAN XUN CAIYUN JIANG ZHENQIANG LUO JINPING ZHAO CHAO TO: SUN XINGJIAN XUN CAIYUN JIANG ZHENQIANG LUO JINPING ZHAO CHAOZHI

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