WO2017107959A1 - 一种基桩竖向抗拔静载试验简易连接装置 - Google Patents

一种基桩竖向抗拔静载试验简易连接装置 Download PDF

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WO2017107959A1
WO2017107959A1 PCT/CN2016/111543 CN2016111543W WO2017107959A1 WO 2017107959 A1 WO2017107959 A1 WO 2017107959A1 CN 2016111543 W CN2016111543 W CN 2016111543W WO 2017107959 A1 WO2017107959 A1 WO 2017107959A1
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pile
plate
pull
static load
load test
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PCT/CN2016/111543
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English (en)
French (fr)
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黄志忠
黄小友
邓新
罗嘉辉
冯俊领
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广东中科华大工程技术检测有限公司
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Publication of WO2017107959A1 publication Critical patent/WO2017107959A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures

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  • the invention relates to an anti-plug static load test device, in particular to a simple connection device for vertical pile pull-up and static load test of a pile.
  • the structure located in the underground part will be subjected to upward buoyancy under the action of water.
  • the piles called the uplift piles such as anchor piles, are resistant to the impact of the buoyancy on the overall building structure. Floating piles, etc.
  • the pull-out test for uplift piles on the market is to insert a few steel bars in the hollow part of the uplift pile, and then fill it with concrete, and reserve a certain length of steel bar. After it is consolidated, it will be exposed. The steel bar is welded to the pile pile pull-out test device to complete the pull-out test.
  • the pile pile pull-out test device needs to be filled with concrete, which is troublesome in operation and high in cost; the steel bar used also has the disadvantages of weak structure and insufficient bearing capacity, and is prone to pull-out, which affects the pull-out test.
  • the invention patent No. 201510202120.4 provides a pile pile pull-out test device, including a pull-up pile, a beam and a jack.
  • the pile pile pull-out test device further comprises a hoop and a support frame, and the hoop is set on the uplift pile.
  • the outer surface is fixedly connected with the uplift pile;
  • the support frame comprises a first support plate and a connecting rod, the upper end of the connecting rod is fixed on the first support plate, and the lower end of the connecting rod is fixed on the outer surface of the hoop;
  • the invention comprises a support frame by a plurality of screws.
  • the present invention provides a simple connection device for vertical pull-up and static load test of piles, which realizes reliable connection application in vertical pull-up and static load test of piles, thereby realizing simple, quick, safe and reliable connection. Easy to disassemble, reusable, save time and cost.
  • the technical scheme of the invention is: a simple connecting device for vertical pile pull-up and static load test of a pile, comprising a pile, a top pull beam, a jack, a main beam, a base and a pile cap, and the main beam is connected to the base on both sides of the pile
  • the utility model is characterized in that: two jacks are fixed in the middle of the main beam, and the top pull beam is overlapped on the jack, and the top pull beam is fixedly connected on the two sides of the main beam by a plurality of tie rods, and the pile cap is connected with the pile cap.
  • a rubber layer is connected between the piles; the pile cap is formed by two hoop plates, and the left hoop plate and the right hoop plate are connected by bolts, and the hoop plate comprises a semicircular pipe and a flange plate connected to both ends of the semicircular pipe.
  • a bolt plate welded with a flange plate and a semicircular pipe, the flange plate is provided with a plurality of tie rod holes for fixing the tie rod, and between the two flange plates
  • the welding has a supporting stiffening plate uniformly arranged along the outer circular surface of the semicircular tube, and the plane supporting the stiffening plate passes through the central axis of the semicircular tube.
  • the two jack positions are symmetrical with respect to the centerline of the pile.
  • Three tie rods are respectively connected to the two sides of the top pull beam.
  • the rubber layer is composed of 12-16 rubber strips evenly arranged along the outer circumference of the pile.
  • a row of bolt holes is arranged correspondingly on the left and right hoop plates.
  • a lug is also welded to the flange plate, the lug being symmetrical to the central axis of the pile.
  • a wedge-shaped reinforcing plate is welded to the outer side of the bolt plate and the semicircular pipe.
  • the pile cap is a steel pile cap.
  • the invention has the beneficial effects that the pile cap formed by the welding of the integrated hoop plate greatly reduces the installation process of the pile cap, and facilitates the rapid replacement of the pull-out test device; the rubber layer is tightly pressed between the pile cap and the pile under inspection.
  • the solid connection can effectively protect the pile and realize the anti-plug static test; the top pressure beam is used to bear the top force, which is beneficial to protect other components; the device has reliable transmission force, protects the pile head and can be repeatedly installed and tested. Reuse and save costs.
  • FIG. 1 is a side view showing a schematic view of a simple connection device for vertical pull-up and static load test of a pile according to the present invention
  • FIG. 3 is a schematic structural view of a pile cap of the present invention.
  • a simple connection device for vertical pile pull-up and static load test of pile 1 includes pile 1, top pull beam 2, jack 3, main beam 4, base 5, pile cap 6, located in pile 1
  • the main beam 4 is connected to the base 5 on both sides, and two jacks 3 are fixed in the middle of the main beam 4.
  • the positions of the two jacks 3 are symmetrical with respect to the center line of the pile 1.
  • a jacking beam 2 is lapped on the jack 3, and the top pull beam 2 is fixedly connected to the pile cap 6 sleeved on the pile 1 through a plurality of tie rods 17 on both sides of the main beam 4; in this embodiment, the top pull beam 2 is Three tie rods 17 are respectively connected on both sides; the top pressure beam is used to bear the top force, which is beneficial to protect other components.
  • a rubber layer 7 is connected between the pile cap 6 and the pile 1. In this embodiment, the rubber layer 7 is composed of 12-16 rubber strips uniformly arranged along the outer circumference of the pile 1.
  • the rubber layer 7 of the present embodiment is a vulcanized rubber layer. With The utility model has the characteristics of high wear resistance, high strength and large friction coefficient.
  • the pile cap 6 of the solution and the pile 1 to be inspected are fastened and connected by the rubber layer 7.
  • the flexible connection method can effectively protect the pile 1 and can resist pullout. The static load test was carried out.
  • the pile cap 6 is formed by two hoop plates, and the left hoop plate 8 and the right hoop plate 9 are connected by bolts, and the left hoop plate 8 and the right hoop plate 9 are correspondingly provided with a row of bolt holes;
  • the integrated hoop plate and the pile cap 6 are formed, which greatly reduces the installation process of the pile cap 6 and facilitates rapid replacement of the pull-out test device;
  • the hoop plate comprises a semi-circular pipe 10 and a flange plate 11 connected to both ends of the semi-circular pipe 10 a bolt plate 12 welded to the flange plate 11 and the semicircular pipe 10, the flange plate 11 is provided with a plurality of tie rod holes 13 for fixing the tie rods 17, and the two flange plates 11 are welded along the semicircular tubes 10
  • the supporting stiffening plates 14 are evenly arranged in a circular plane, and the plane supporting the stiffening plates 14 passes through the central axis of the semicircular tubes 10.
  • the pull rod 17 of the embodiment passes through the upper and lower flange plates 11 and is fixed at the lower flange plate, and is also fixed by the fixing device on the upper flange plate, thereby ensuring the excellent overall force performance of the pile cap.
  • the concentricity between the pile cap 6 and the pile 1 is effectively ensured.
  • the flange plate 11 of the present embodiment is also welded with a lifting lug 15 which is symmetrical with respect to the central axis of the pile 1.
  • a wedge-shaped reinforcing plate 16 is welded to the outer side of the bolt plate 12 and the semicircular pipe 10 of the present embodiment.
  • the pile cap 6 of this embodiment is a steel pile cap.
  • the device is installed with a test reaction device (including the main beam 4) and a jack 3, and a jacking force is applied through the jack 3, and the jacking force is transmitted to the top beam plate, the tie rod 17, the pile cap 6, and the rubber layer 7 passing through the inner side of the pile cap 6. It is transmitted to the pile 1 to be tested, thereby achieving the resistance to the pile 1.
  • the device can be repeatedly installed and tested, reused, and saves costs.

Abstract

一种基桩竖向抗拔静载试验简易连接装置，包括桩（1）、顶拉梁（2）、千斤顶（3）、主梁（4）、底座（5）、桩帽（6），位于桩（1）两侧的底座（5）上连接有主梁（4），主梁（4）中部固定有两个千斤顶（3），千斤顶（3）上搭接有顶拉梁（2），顶拉梁（2）位于主梁（4）方向的两侧通过若干拉杆（17）与桩（1）上套接的桩帽（6）固定连接，桩帽（6）与桩（1）之间连接有橡胶层（7）；桩帽（6）由两个箍板合抱而成，左箍板（8）和右箍板（9）通过螺栓连接而成，箍板包括半圆管（10）、与半圆管（10）两端连接的法兰板（11）、与法兰板（11）和半圆管（10）焊接的螺栓板（12），法兰板（11）上设置有若干用来固定拉杆（17）的拉杆孔（13），两个法兰板（11）之间焊接有沿着半圆管（10）外圆面均匀排列的支撑加劲板（14），支撑加劲板（14）平面穿过半圆管（10）的中心轴。

Description

一种基桩竖向抗拔静载试验简易连接装置 技术领域
本发明涉及一种抗拔静载试验装置，尤其是一种基桩竖向抗拔静载试验简易连接装置。
背景技术
在进行建筑工程施工过程中，位于地下部分的结构会在水的作用下会受到向上的浮力，为消除该浮力的对整体建筑架构的影响而打的桩叫抗拔桩，如锚桩、抗浮桩等。现在市场上用于抗拔桩的抗拔试验都是在抗拔桩的中空部位插入几根钢筋，然后用混凝土填实，并预留出一定长度的钢筋，待其固结后，将露出的钢筋焊接在基桩抗拔试验装置从而完成抗拔试验。但这种基桩抗拔试验装置需填充混凝土，操作麻烦且成本高；另外采用的钢筋也存在着结构不牢固、承载力不够的缺点，容易出现拉脱的情况，影响抗拔试验的进行。
申请号为201510202120.4的发明专利提供了一种基桩抗拔试验装置，包括抗拔桩、横梁以及千斤顶，该基桩抗拔试验装置还包括抱箍以及支撑架，抱箍套装于抗拔桩的外表面并与抗拔桩固定连接；支撑架包括第一支撑板以及连接杆，连接杆的上端固定在第一支撑板上，连接杆的下端固定在抱箍的外表面上；千斤顶的缸体固定在横梁上，千斤顶的自由端向上抵顶于第一支撑板的下表面。该发明通过多个螺杆组成支撑架，虽然避免使用混凝土和钢筋，但是通过刚性接触拧紧，易导致受检桩损坏，安装较为麻烦，而且结构不稳定，试验准确度较差。
发明内容
针对现有技术的不足，本发明提供一种基桩竖向抗拔静载试验简易连接装置，实现可靠的连接应用在基桩竖向抗拔静载试验，从而实现连接简单、快捷、安全可靠、拆卸方便、可重复使用、节省时间、节省成本。
本发明的技术方案为：一种基桩竖向抗拔静载试验简易连接装置，包括桩、顶拉梁、千斤顶、主梁、底座、桩帽，位于桩两侧的底座上连接有主梁，其特征在于：主梁中部固定有两个千斤顶，千斤顶上搭接有顶拉梁，顶拉梁位于主梁方向的两侧通过若干拉杆与桩上套接的桩帽固定连接，桩帽与桩之间连接有橡胶层；所述桩帽由两个箍板合抱而成，左箍板和右箍板通过螺栓连接而成，箍板包括半圆管、与半圆管两端连接的法兰板、与法兰板和半圆管焊接的螺栓板，法兰板上设置有若干用来固定拉杆的拉杆孔，两个法兰板之间 焊接有沿着半圆管外圆面均匀排列的支撑加劲板，支撑加劲板平面穿过半圆管的中心轴。
两个千斤顶位置为相对于桩的中心线对称。
顶拉梁的两侧分别连接有三根拉杆。
橡胶层为12-16条橡胶条沿着桩的外圆周均匀排列组成。
左箍板和右箍板上对应设置有一排螺栓孔。
法兰板上还焊接有吊耳，所述吊耳对称于桩的中心轴。
螺栓板与半圆管外侧焊接有楔形加固板。
螺栓板上排列有五个螺栓孔。
所述桩帽为钢制桩帽。
本发明的有益效果为：通过焊接一体的箍板合抱组成的桩帽，大大减少了桩帽的安装工序，有利于抗拔试验装置的快速更换；桩帽与受检桩之间通过橡胶层紧固连接，即能有效保护桩，又能实现抗拔静载试验的进行；采用顶压梁来承受顶力，有利于保护其他部件；本装置传力可靠，保护桩头、可重复安装检测，重复使用，节约成本。
附图说明
图1为本发明的基桩竖向抗拔静载试验简易连接装置侧视结构示意图；
图2为本发明的俯视结构示意图；
图3为本发明的桩帽结构示意图；
图中：1-桩、2-顶拉梁、3-千斤顶、4-主梁、5-底座、6-桩帽、7-橡胶层、8-左箍板、9-右箍板、10-半圆管、11-法兰板、12-螺栓板、13-拉杆孔、14-支撑加劲板、15-吊耳、16-楔形加固板、17-拉杆、18-螺纹孔。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步说明：
如图1-3所示，一种基桩1竖向抗拔静载试验简易连接装置，包括桩1、顶拉梁2、千斤顶3、主梁4、底座5、桩帽6，位于桩1两侧的底座5上连接有主梁4，主梁4中部固定有两个千斤顶3，本实施例中，两个千斤顶3位置为相对于桩1的中心线对称。千斤顶3上搭接有顶拉梁2，顶拉梁2位于主梁4方向的两侧通过若干拉杆17与桩1上套接的桩帽6固定连接；本实施例中，顶拉梁2的两侧分别连接有三根拉杆17；采用顶压梁来承受顶力，有利于保护其他部件。桩帽6与桩1之间连接有橡胶层7，本实施例中，橡胶层7为12-16条橡胶条沿着桩1的外圆周均匀排列组成；本方案的橡胶层7为硫化橡胶层，具 有耐磨、强度高、摩擦系数大的特点，本方案桩帽6与受检桩1之间通过橡胶层7紧固连接，这种柔性连接方式即能有效保护桩1，又能实现抗拔静载试验的进行。
所述桩帽6由两个箍板合抱而成，左箍板8和右箍板9通过螺栓连接而成，左箍板8和右箍板9上对应设置有一排螺栓孔；本方案通过焊接一体的箍板合抱组成的桩帽6，大大减少了桩帽6的安装工序，有利于抗拔试验装置的快速更换；箍板包括半圆管10、与半圆管10两端连接的法兰板11、与法兰板11和半圆管10焊接的螺栓板12，法兰板11上设置有若干用来固定拉杆17的拉杆孔13，两个法兰板11之间焊接有沿着半圆管10外圆面均匀排列的支撑加劲板14，支撑加劲板14平面穿过半圆管10的中心轴。本实施例的拉杆17穿过上下两个法兰板11，并且在下法兰板上固定端部，在上法兰板上也通过固定器固定，能保证桩帽极好的整体受力性能，有效保证桩帽6与桩1之间的同心度。
本实施例的法兰板11上还焊接有吊耳15，所述吊耳15对称于桩1的中心轴。
本实施例的螺栓板12与半圆管10外侧焊接有楔形加固板16。
本实施例螺栓板12上排列有五个螺栓孔。
本实施例的桩帽6为钢制桩帽。
本装置安装试验反力装置(含主梁4)及千斤顶3，通过千斤顶3施加顶力，该顶力传递给顶梁板、拉杆17、桩帽6、再通过桩帽6内侧的橡胶层7传递给受检桩1，从而实现对基桩1的抗拔。本装置可重复安装检测，重复使用，节约成本。
上述实施例和说明书中描述的只是说明本发明的原理和最佳实施例，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。

Claims (9)

  1. 一种基桩竖向抗拔静载试验简易连接装置，包括桩、顶拉梁、千斤顶、主梁、底座、桩帽，位于桩两侧的底座上连接有主梁，其特征在于：主梁中部固定有两个千斤顶，千斤顶上搭接有顶拉梁，顶拉梁位于主梁方向的两侧通过若干拉杆与桩上套接的桩帽固定连接，桩帽与桩之间连接有橡胶层；所述桩帽由两个箍板合抱而成，左箍板和右箍板通过螺栓连接而成，箍板包括半圆管、与半圆管两端连接的法兰板、与法兰板和半圆管焊接的螺栓板，法兰板上设置有若干用来固定拉杆的拉杆孔，两个法兰板之间焊接有沿着半圆管外圆面均匀排列的支撑加劲板，支撑加劲板平面穿过半圆管的中心轴。
  2. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：两个千斤顶位置为相对于桩的中心线对称。
  3. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：顶拉梁的两侧分别连接有三根拉杆。
  4. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：橡胶层为12-16条橡胶条沿着桩的外圆周均匀排列组成。
  5. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：左箍板和右箍板上对应设置有一排螺栓孔。
  6. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：法兰板上还焊接有吊耳，所述吊耳对称于桩的中心轴。
  7. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：螺栓板与半圆管外侧焊接有楔形加固板。
  8. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：螺栓板上排列有五个螺栓孔。
  9. 根据权利要求1所述的基桩竖向抗拔静载试验简易连接装置，其特征在于：所述桩帽为钢制桩帽。
PCT/CN2016/111543 2015-12-22 2016-12-22 一种基桩竖向抗拔静载试验简易连接装置 WO2017107959A1 (zh)

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CN109141853A (zh) * 2018-08-28 2019-01-04 南京中船绿洲机器有限公司 一种吊梁极限载荷静力试验装置及其试验方法
CN112881186A (zh) * 2021-01-15 2021-06-01 中建一局集团第三建筑有限公司 盖梁承载力检测结构及用该结构进行承载力检测的方法
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