WO2020199656A1 - 一种基桩承载力试验位移测试一体化装置及测试方法 - Google Patents

一种基桩承载力试验位移测试一体化装置及测试方法 Download PDF

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WO2020199656A1
WO2020199656A1 PCT/CN2019/126156 CN2019126156W WO2020199656A1 WO 2020199656 A1 WO2020199656 A1 WO 2020199656A1 CN 2019126156 W CN2019126156 W CN 2019126156W WO 2020199656 A1 WO2020199656 A1 WO 2020199656A1
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displacement
wire
test
testing
bearing capacity
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PCT/CN2019/126156
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English (en)
French (fr)
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钱勇
魏建智
钟称发
肖力萍
易教良
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南昌永祺科技发展有限公司
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Publication of WO2020199656A1 publication Critical patent/WO2020199656A1/zh

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00Testing foundations or foundation structures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/10Miscellaneous comprising sensor means

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  • the invention relates to an integrated device and a testing method for the displacement test of a foundation pile bearing capacity test, and belongs to the technical field of foundation pile bearing capacity detection.
  • the pile displacement test is mainly based on the load-displacement curve to determine whether the bearing capacity of the pile meets the design requirements. Therefore, the pile Whether the displacement detection is accurate or not, its importance is self-evident.
  • the displacement test method usually uses a displacement rod.
  • One end of the displacement rod is connected to the load box and the other end extends above the ground, and the displacement rod is connected to the displacement sensor.
  • the displacement sensor To detect the displacement of the displacement rod, and obtain the displacement of the foundation pile according to the displacement of the displacement rod.
  • a reference beam with sufficient rigidity and stability is required to fix and support the displacement sensor.
  • the construction of the reference beam is time-consuming and laborious, and it is required that the reference beam cannot be damaged by touch and there should be no vibration source nearby.
  • the displacement sensor needs to be installed vertically on the displacement rod.
  • the installation of the displacement sensor requires high verticality, which increases the difficulty of construction, and causes the test error to be greatly affected by human factors, which affects the accuracy of the measurement.
  • the purpose of the present invention is to provide an integrated device and a testing method for the displacement test of the bearing capacity of the foundation pile, which is simple and convenient to implement, realizes the stable and effective connection of the displacement wire and the load box, which can be better eliminated In the process of displacement measurement, external interference and human factors can reduce test errors and improve measurement accuracy.
  • An integrated device for the displacement test of the bearing capacity test of a foundation pile comprising: a displacement test device, a load box and a protective tube, and also includes a first upper displacement wire or a second upper displacement wire and a first lower displacement wire or a second lower displacement wire Displacement wire
  • the load box includes an upper cover plate and a lower bottom plate, and the upper ends of the first upper displacement wire or the second upper displacement wire are both connected with a displacement testing device;
  • the lower end of the first upper displacement wire is connected to the upper cover plate of the load box through the protective tube, and the lower end of the first lower displacement wire is connected to the lower bottom plate of the load box through the protective tube;
  • the device also includes an electromagnet device, which includes an electromagnet, a steel rod and a power cord;
  • the upper ends of the second upper displacement wire and the second lower displacement wire are both connected to the displacement test device, the lower end is connected to the electromagnet by screws, and the lower end of the electromagnet is provided with a steel rod, which is fixed to the upper cover plate of the load box or On the bottom plate.
  • the displacement testing device includes a first bracket, a counterweight, a guide rod, a first displacement sensor, a displacement contact rod, a first fixed pulley and a second fixed pulley;
  • the first fixed pulley and the second fixed pulley are respectively installed at both ends of the first bracket, the upper ends of the first upper displacement wire and the first lower displacement wire bypass the first fixed pulley and are connected to one end of the guide rod, and the other end of the guide rod passes through
  • the second fixed pulley is connected with the counterweight, and the side of the guide rod is connected with the first displacement sensor through the displacement contact rod.
  • the displacement testing device includes a second bracket, a guide sleeve, a spring, a mounting plate, a second displacement sensor, a displacement contact piece and a fixed pulley;
  • the fixed pulley is installed below one end of the second bracket, the spring is installed below the other end of the second bracket, one end of the spring is connected with the guide sleeve, and the installation positions of the fixed pulley, the spring and the guide sleeve are on the same horizontal axis;
  • the second displacement sensor is installed on the mounting plate above the second bracket, the mounting plate is fixed on the second bracket of the bracket by bolts, the lower part of the displacement contact piece is located in the groove of the guide sleeve, and the upper part of the displacement contact piece is connected to the second displacement Sensor connection.
  • the first displacement sensor is horizontally installed and placed on the first bracket
  • the second displacement sensor is horizontally mounted on the mounting plate of the second bracket.
  • first upper displacement wire, the second upper displacement wire, the first lower displacement wire and the second lower displacement wire are all provided with protective tube protection.
  • the number of the displacement test devices is equal to the sum of the numbers of the first upper displacement wires and the first lower displacement wires, and each of the first upper displacement wires and the first lower displacement wires is connected to a displacement test correspondingly.
  • the number of displacement testing devices is equal to the sum of the numbers of the second upper displacement wires and the second lower displacement wires, and each of the second upper displacement wires and the second lower displacement wires is correspondingly connected with a displacement testing device.
  • the first upper displacement wire and the first lower displacement wire produce upward or downward displacement.
  • the second upper displacement wire and the second lower displacement wire produce upward or downward displacement.
  • the accuracy of the displacement test can be increased by setting more upper and lower displacement wires.
  • the traditional self-balanced static load test of foundation piles requires the erection of reference beams, and the construction of reference beams is time-consuming and laborious.
  • the present invention does not need to set reference beams and reference piles, which simplifies the inspection process and reduces the work intensity of the inspectors;
  • the displacement wire is a single-strand or double-strand steel wire, which has good performance, light weight, high flexibility, and strong rigidity. It can be straightened without secondary deformation, and the displacement transmission is more Accurate and sensitive, with higher test accuracy;
  • the displacement wire can be disassembled and recycled, which saves a lot of material cost compared with the traditional non-recoverable displacement rod, which saves resources and reduces the cost of testing, energy saving and environmental protection;
  • the displacement sensor is changed from the original vertical installation to the horizontal installation, which has stronger anti-interference, better stability, higher reliability and more accurate displacement test.
  • Figure 1 is a schematic structural diagram of Embodiment 3 of the present invention.
  • Figure 2 is a schematic diagram of an exploded structure of the fourth embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the exploded structure of the second and fourth embodiments of the present invention.
  • FIG. 4 is a schematic diagram of the exploded structure of the first and second embodiments of the present invention.
  • Fig. 5 is a schematic diagram of an exploded structure of the first and second embodiments of the present invention.
  • An integrated device for displacement testing of foundation pile bearing capacity test comprising: a displacement testing device, a load box, and a protective tube 1, and also includes a first upper displacement wire 2 and a first lower displacement wire 3, the load box including an upper cover plate 4 and the lower base plate 5.
  • the upper ends of the first upper displacement wire 2 and the first lower displacement wire 3 are both connected to the displacement test device, and the lower end of the first upper displacement wire 2 passes through the protective tube 1 and the load box upper cover 4 Connected, the lower end of the first lower displacement wire 3 passes through the protective tube 1 and is connected to the lower bottom plate 5 of the load box.
  • the displacement testing device includes a first bracket 6, a counterweight 7, a guide rod 8, a first displacement sensor 9, a displacement contact rod 10, a first fixed pulley 11 and a second fixed pulley 12;
  • the fixed pulley 11 and the second fixed pulley 12 are respectively installed at both ends of the first bracket 6, the upper end of the upper (lower) displacement wire bypasses the first fixed pulley 11 and is connected to one end of the guide rod 8, and the other end of the guide rod passes through the second fixed pulley 12 is connected with the counterweight 7, and the side of the guide rod 8 is connected with the first displacement sensor 9 through the displacement contact rod 10.
  • An integrated device for displacement testing of foundation pile bearing capacity test comprising: a displacement testing device, a load box, and a protective tube 1, and also includes a first upper displacement wire 2 and a first lower displacement wire 3, the load box including an upper cover plate 4 and the lower bottom plate 5.
  • the upper ends of the upper and lower displacement wires are connected to the displacement test device, the lower end of the upper displacement wire passes through the protective tube 1 and is connected to the load box upper cover 4, and the lower end of the lower displacement wire passes through
  • the protective pipe 1 is connected with the lower bottom plate 5 of the load box.
  • the displacement test device includes a second bracket 6', a guide sleeve 13, a spring 14, a mounting plate 15, a second displacement sensor 9', a displacement contact piece 16 and a fixed pulley 17;
  • the fixed pulley 17 is mounted on the first Below one end of the second bracket 6', the spring 14 is installed below the other end of the second bracket 6', one end of the spring is connected to the guide sleeve 13, and the fixed pulley 17, the spring 14 and the guide sleeve 13 are installed in the same horizontal axis. .
  • the second displacement sensor 9' is mounted on the mounting plate 15 above the second bracket 6', the mounting plate 15 is fixed on the second bracket 6'by bolts, and the lower part of the displacement contact piece 16 is located in the groove of the guide sleeve 13 , The upper part is connected with the second displacement sensor 9'.
  • An integrated device for displacement testing of foundation pile bearing capacity test comprising a displacement testing device, an electromagnet device and a load box, and further comprising a first upper displacement wire 2'and a first lower displacement wire 3'.
  • the electromagnet device includes an electromagnetic Iron 18, steel rod 19 and power cord 20
  • the load box includes an upper cover plate 4 and a lower bottom plate 5, the upper ends of the first upper displacement wire 2'and the first lower displacement wire 3'are connected to the displacement test device ,
  • the lower end is connected with the electromagnet 18 by screws, and the lower end of the electromagnet is provided with a steel rod 19, which is fixed on the upper cover 4 or the lower bottom plate 5 of the load box.
  • the displacement testing device includes a first bracket 6, a counterweight 7, a guide rod 8, a first displacement sensor 9, a displacement contact rod 10, a first fixed pulley 11 and a second fixed pulley 12;
  • the fixed pulley 11 and the second fixed pulley 12 are respectively installed at both ends of the first bracket 6.
  • the upper end of the upper (lower) displacement wire bypasses the first fixed pulley 11 and is connected to one end of the guide rod 8, and the other end of the guide rod 8 passes through the second fixed pulley.
  • the pulley 12 is connected with the counterweight 7, and the side of the guide rod 8 is connected with the first displacement sensor 9 through the displacement contact rod 10.
  • An integrated device for displacement testing of foundation pile bearing capacity test comprising a displacement testing device, an electromagnet device and a load box, and further comprising a first upper displacement wire 2'and a first lower displacement wire 3'.
  • the electromagnet device includes an electromagnetic Iron 18, steel rod 19 and power cord 20
  • the load box includes an upper cover plate 4 and a lower bottom plate 5, the upper ends of the first upper displacement wire 2'and the first lower displacement wire 3'are connected to the displacement test device ,
  • the lower end is connected with the electromagnet 18 by screws, and the lower end of the electromagnet is provided with a steel rod 19, which is fixed on the upper cover 4 or the lower bottom plate 5 of the load box.
  • the displacement test device includes a second bracket 6', a guide sleeve 13, a spring 14, a mounting plate 15, a second displacement sensor 9', a displacement contact piece 16 and a fixed pulley 17;
  • the fixed pulley 17 is mounted on the first Below one end of the second bracket 6', the spring 14 is installed below the other end of the second bracket 6', one end of the spring 14 is connected with the guide sleeve 13, and the fixed pulley 17, the spring 14 and the guide sleeve 13 are installed in the same horizontal axis on.
  • the second displacement sensor 9' is mounted on the mounting plate 15 above the second bracket 6', the mounting plate 15 is fixed on the second bracket 6'by bolts, and the lower part of the displacement contact piece 16 is located in the groove of the guide sleeve 13 , The upper part is connected with the second displacement sensor 9'.
  • the displacement sensor is horizontally installed and placed on the bracket; in the above embodiments 2 and 4, the displacement sensor is horizontally installed on the mounting plate of the bracket.
  • the number of the displacement test devices is equal to the sum of the numbers of the upper displacement wires and the lower displacement wires, and each upper displacement wire or the lower displacement wire is correspondingly connected with a displacement test device.
  • the first upper displacement wire 2 and the first lower displacement wire 3 produce upward or downward displacement.
  • the displacement contact rod connected to the side of the guide rod is used to guide the displacement contact piece in the slot of the guide sleeve to transfer the displacement generated to the first displacement.
  • a testing method of an integrated device for testing and displacement testing of foundation pile bearing capacity :
  • the second upper displacement wire 2'and the second lower displacement wire 3' produce upward or downward displacement through the displacement contact rod connected to the side of the guide rod, and the displacement contact piece in the groove of the guide sleeve transmits the generated displacement to the first
  • the second displacement sensor 9' records the test displacement at this time;

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  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
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  • Civil Engineering (AREA)
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Abstract

本发明涉及一种基桩承载力试验位移测试一体化装置及测试方法,属于基桩承载力检测技术领域。该装置包括:位移测试装置、荷载箱和护管,还包括第一上位移丝或第二上位移丝以及第一下位移丝或第二下位移丝;所述荷载箱包括上盖板和下底板,所述第一上位移丝或第二上位移丝的上端均与位移测试装置连接;本发明布设施工简便,实现位移丝与荷载箱的稳定有效连接,可较好消除位移测量过程中外界干扰和人为因素影响,减小测试误差,提高测量精度。

Description

一种基桩承载力试验位移测试一体化装置及测试方法 技术领域
本发明涉及一种基桩承载力试验位移测试一体化装置及测试方法,属于基桩承载力检测技术领域。
背景技术
基桩承载力试验过程中,基桩位移的准确测试无疑是一项非常重要的工作内容,基桩位移测试主要是依据载荷—位移曲线来测定基桩的承载能力是否符合设计要求,因此基桩位移检测准确与否,其重要程度是不言而喻的。
现有技术中常用的基桩承载力试验中,位移的测试方法通常是采用位移杆,将位移杆一端连接在荷载箱上,另一端延伸至地面以上,并将位移杆与位移传感器相连,用来检测位移杆的位移量,并根据位移杆位移得到基桩位移。位移传感器在使用时,一方面需要有足够刚度和稳定性的基准梁,用于固定和支撑位移传感器,然而基准梁施工费时费力,且要求基准梁不能被触碰破坏,附近不能有振源,不受日晒雨淋干扰及试桩下沉影响;另一方面,为了便于根据位移杆的位移量直接得到基桩各测点的位移,需将位移传感器垂直安装在位移杆上,这就对位移传感器的安装垂直度要求很高,加大了施工难度,导致测试误差受人为因素影响较大,影响测量的准确性。
发明内容
针对现有技术存在的不足,本发明的目的在于提供一种基桩承载力试验位移测试一体化装置及其测试方法,布设施工简便,实现位移丝与荷载箱的稳定有效连接,可较好消除位移测量过程中外界干扰和人为因素影响,减小测试误差,提高测量精度。
本发明为了实现上述目的,采用如下技术方案:
一种基桩承载力试验位移测试一体化装置,该装置包括:位移测试装置、荷载箱和护管,还包括第一上位移丝或第二上位移丝以及第一下位移丝或第二下位移丝;
所述荷载箱包括上盖板和下底板,所述第一上位移丝或第二上位移丝的上端均与位移测试装置连接;
当使用第一上位移丝和第一下位移丝时:
第一上位移丝的下端穿过护管与荷载箱上盖板连接,第一下位移丝的下端穿过护管与荷载箱的下底板连接;
当使用第二上位移丝和第二下位移丝时:
该装置还包括有电磁铁装置,所述电磁铁装置包括电磁铁、钢杆和电源线;
所述第二上位移丝和第二下位移丝的上端均与位移测试装置连接,下端通过螺钉与电磁铁连接,电磁铁下端设有钢杆,钢杆固定于所述荷载箱上盖板或下底板上。
进一步的,所述位移测试装置包括第一支架、配重块、导向杆、第一位移传感器、位移接触杆、第一定滑轮和第二定滑轮;
所述第一定滑轮和第二定滑轮分别安装于第一支架两端,第一上位移丝和第一下位移丝的上端绕过第一定滑轮与导向杆一端连接,导向杆另一端通过第二定滑轮与配重块连接,导向杆侧面通过位移接触杆与第一位移传感器连接。
进一步的,所述位移测试装置包括第二支架、导向套、弹簧、安装板、第二位移传感器、位移接触片和定滑轮;
所述定滑轮安装于第二支架一端下方,所述弹簧安装于第二支架另一端下方,弹簧一端与导向套连接,所述定滑轮、弹簧与导向套的安装位置在同一水平轴线上;
所述第二位移传感器安装在第二支架上方的安装板上,安装板通过螺栓固定在支架第二支架上,所述位移接触片下部位于导向套卡槽中,位移接触片上部与第二位移传感器连接。
进一步的,所述第一位移传感器为卧式安装平放置于第一支架上;
所述第二位移传感器为卧式安装于第二支架的安装板上。
进一步的,第一上位移丝、第二上位移丝、第一下位移丝和第二下位移丝外部均设有护管保护。
进一步的,所述位移测试装置的数量与第一上位移丝和第一下位移丝的数量之和相等,且每一根第一上位移丝和第一下位移丝均对应连接有一个位移测试装置;
或者,位移测试装置的数量与第二上位移丝和第二下位移丝的数量之和相等,且每一根第二上位移丝和第二下位移丝均对应连接有一个位移测试装置。
一种基桩承载力试验位移测试一体化装置的测试方法,该测试方法当使用第一上位移丝和第一下位移丝时:
A、基桩承载力试验中,当上或下段桩基向上或下移动时,由于另一侧配重块绷直力:弹簧预紧力的作用,第一上位移丝和第一下位移丝向上或下产生相应位移;
B、第一上位移丝和第一下位移丝产生向上或下位移通过导向杆侧面连接的位移接触杆,导向套卡槽中的位移接触片,将产生的位移量传递至第一位移传感器,记录此时的测试位移量;
C、完成试验后,将第一上位移丝和第一下位移丝从护管中取出回收利用。
一种基桩承载力试验位移测试一体化装置的测试方法,该测试方法当使用第二上位移丝和第二下位移丝时:
A、基桩承载力试验开始前,连接电源通电,此时电磁铁处于无磁状态,将电源线放入护管中指定位置;
B、关闭电源,此时电磁铁处于带磁状态,进行基桩承载力试验,当上或下段桩基向上或下移动时,由于另一侧配重块绷直力:弹簧预紧力的作用,第二上位移丝和第二下位移丝向上或下产生相应位移;
C、第二上位移丝和第二下位移丝产生向上或下位移通过导向杆侧面连接的位移接触杆,导向套卡槽中的位移接触片,将产生的位移量传递至第二位移传感器,记录此时的测试位移量;
D、完成试验后,将第二上位移丝和第二下位移丝从护管中取出回收利用。
通过上述上述2种测试方法,通过多设置上位移丝和下位移丝可增加位移测试的精准性。
与现有技术相比,本发明的优点在于:
1、传统的基桩自平衡静载试验检测需架设基准梁,基准梁施工耗时费力,本发明无须设置基准梁和基准桩,简化了检测工序,减轻了检测人员的工作强度;
2、取消位移杆的安装,用位移丝全面替代位移杆,位移丝为单股或双股钢丝,性能好、重量轻、柔软度高、刚性强可以拉直不产生二次变形,位移传递更准确灵敏,测试精准度更高;
3、自平衡静载实验完成后,位移丝可拆卸回收,相比传统的不可回收的位移杆而言节省大量材料成本,既节约资源,又降低检测成本,节能环保;
4、位移传感器由原来的立式安装改为卧式安装,抗干扰性更强,稳定性更好,可靠性更高,位移测试更准确。
附图说明
图1为本发明实施例三的结构示意图;
图2为本发明实施例四的分解结构示意图;、
图3为本发明实施例二和四的分解结构示意图;
图4为本发明实施例一和二的分解结构示意图;
图5为本发明实施例一和二的分解结构示意图。
具体实施方式
下面结合实施例对本发明进行详细描述:
实施例一
一种基桩承载力试验位移测试一体化装置,包括:位移测试装置、荷载箱和护管1,还包括第一上位移丝2和第一下位移丝3,所述荷载箱包括上盖板4和下底板5,所述第一上位移丝2和第一下位移丝3的上端均与位移测试装置连接,第一上位移丝2的下端穿过护管1与荷载箱上盖板4连接,第一下位移丝3的下端穿过护管1与荷载箱下底板5连接。
优选地,所述位移测试装置包括第一支架6、配重块7、导向杆8、第一位移传感器9、位移接触杆10、第一定滑轮11和第二定滑轮12;所述第一定滑轮11、第二定滑轮12分别安装于第一支架6两端,上(下)位移丝的上端绕过第一定滑轮11与导向杆8一端连接,导向杆另一端通过第二定滑轮12与配重块7连接,导向杆8侧面通过位移接触杆10与第一位移传感器9连接。
实施例二
一种基桩承载力试验位移测试一体化装置,包括:位移测试装置、荷载箱 和护管1,还包括第一上位移丝2和第一下位移丝3,所述荷载箱包括上盖板4和下底板5,所述上位移丝和下位移丝的上端均与位移测试装置连接,上位移丝的下端穿过护管1与荷载箱上盖板4连接,下位移丝的下端穿过护管1与荷载箱下底板5连接。
优选地,所述位移测试装置包括第二支架6’、导向套13、弹簧14、安装板15、第二位移传感器9’、位移接触片16和定滑轮17;所述定滑轮17安装于第二支架6’一端下方,所述弹簧14安装于第二支架6’另一端下方,弹簧一端与导向套13连接,所述定滑轮17、弹簧14与导向套13的安装位置在同一水平轴线上。所述第二位移传感器9’安装在第二支架6’上方的安装板15上,安装板15通过螺栓固定在第二支架6’上,所述位移接触片16下部位于导向套13卡槽中,上部与第二位移传感器9’连接。
实施例三
一种基桩承载力试验位移测试一体化装置,包括位移测试装置、电磁铁装置和荷载箱,还包括第一上位移丝2’和第一下位移丝3’,所述电磁铁装置包括电磁铁18、钢杆19和电源线20,所述荷载箱包括上盖板4和下底板5,所述第一上位移丝2’和第一下位移丝3’的上端均与位移测试装置连接,下端通过螺钉与电磁铁18连接,电磁铁下端设有钢杆19,钢杆19固定于所述荷载箱上盖板4或下底板5上。
优选地,所述位移测试装置包括第一支架6、配重块7、导向杆8、第一位移传感器9、位移接触杆10、第一定滑轮11和第二定滑轮12;所述第一定滑轮11、第二定滑轮12分别安装于第一支架6两端,上(下)位移丝的上端绕过第一定滑轮11与导向杆8一端连接,导向杆8另一端通过第二定滑轮12与配重块7连接,导向杆8侧面通过位移接触杆10与第一位移传感器9连接。
实施例四
一种基桩承载力试验位移测试一体化装置,包括位移测试装置、电磁铁装置和荷载箱,还包括第一上位移丝2’和第一下位移丝3’,所述电磁铁装置包括电磁铁18、钢杆19和电源线20,所述荷载箱包括上盖板4和下底板5,所述第一上位移丝2’和第一下位移丝3’的上端均与位移测试装置连接,下端通 过螺钉与电磁铁18连接,电磁铁下端设有钢杆19,钢杆19固定于所述荷载箱上盖板4或下底板5上。
优选地,所述位移测试装置包括第二支架6’、导向套13、弹簧14、安装板15、第二位移传感器9’、位移接触片16和定滑轮17;所述定滑轮17安装于第二支架6’一端下方,所述弹簧14安装于第二支架6’另一端下方,弹簧14一端与导向套13连接,所述定滑轮17、弹簧14与导向套13的安装位置在同一水平轴线上。所述第二位移传感器9’安装在第二支架6’上方的安装板15上,安装板15通过螺栓固定在第二支架6’上,所述位移接触片16下部位于导向套13卡槽中,上部与第二位移传感器9’连接。
以上实施例一和三中,位移传感器为卧式安装平放置于支架上;以上实施例二和四中,所述位移传感器为卧式安装于支架的安装板上。
以上4种技术方案中,所述上位移丝和下位移丝外部均设有护管保护。
优选地,所述位移测试装置的数量与上位移丝和下位移丝的数量之和相等,且每一根上位移丝或下位移丝均对应连接有一个位移测试装置。
实施例五
一种基桩承载力试验位移测试一体化装置的测试方法,该测试方法当使用第一上位移丝2和第一下位移丝3时:
A、基桩承载力试验中,当上或下段桩基向上或下移动时,由于另一侧配重块绷直力:弹簧预紧力的作用,第一上位移丝2和第一下位移丝3向上或下产生相应位移;
B、第一上位移丝2和第一下位移丝3产生向上或下位移通过导向杆侧面连接的位移接触杆,导向套卡槽中的位移接触片,将产生的位移量传递至第一位移传感器,记录此时的测试位移量;
C、完成试验后,将第一上位移丝2和第一下位移丝3从护管中取出回收利用。
实施例六
一种基桩承载力试验位移测试一体化装置的测试方法:
该测试方法当使用第二上位移丝2’和第二下位移丝3’时:
A、基桩承载力试验开始前,连接电源通电,此时电磁铁处于无磁状态,将电源线放入护管中指定位置;
B、关闭电源,此时电磁铁处于带磁状态,进行基桩承载力试验,当上或下段桩基向上或下移动时,由于另一侧配重块绷直力:弹簧预紧力的作用,第二上位移丝2’和第二下位移丝3’向上或下产生相应位移;
C、第二上位移丝2’和第二下位移丝3’产生向上或下位移通过导向杆侧面连接的位移接触杆,导向套卡槽中的位移接触片,将产生的位移量传递至第二位移传感器9’,记录此时的测试位移量;
D、完成试验后,将第二上位移丝2’和第二下位移丝3’从护管中取出回收利用。
注意到,以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,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。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (8)

  1. 一种基桩承载力试验位移测试一体化装置,其特征在于,该装置包括:位移测试装置、荷载箱和护管(1),还包括第一上位移丝(2)或第二上位移丝(2’)以及第一下位移丝(3)或第二下位移丝(3’);
    所述荷载箱包括上盖板(4)和下底板(5),所述第一上位移丝(2)或第二上位移丝(2’)的上端均与位移测试装置连接;
    当使用第一上位移丝(2)和第一下位移丝(3)时:
    第一上位移丝(2)的下端穿过护管(1)与荷载箱上盖板(4)连接,第一下位移丝(3)的下端穿过护管(1)与荷载箱的下底板(5)连接;
    当使用第二上位移丝(2’)和第二下位移丝(3’)时:
    该装置还包括有电磁铁装置,所述电磁铁装置包括电磁铁(18)、钢杆(19)和电源线(20);
    所述第二上位移丝(2’)和第二下位移丝(3’)的上端均与位移测试装置连接,下端通过螺钉与电磁铁(18)连接,电磁铁(18)下端设有钢杆(19),钢杆(19)固定于所述荷载箱上盖板(4)或下底板(5)上。
  2. 根据权利要求1所述的基桩承载力试验位移测试一体化装置,其特征在于:
    所述位移测试装置包括第一支架(6)、配重块(7)、导向杆(8)、第一位移传感器(9)、位移接触杆(10)、第一定滑轮(11)和第二定滑轮(12);
    所述第一定滑轮(11)和第二定滑轮(12)分别安装于第一支架(6)两端,第一上位移丝(2)和第一下位移丝(3)的上端绕过第一定滑轮(11)与导向杆(8)一端连接,导向杆(8)另一端通过第二定滑轮(12)与配重块(7)连接,导向杆(8)侧面通过位移接触杆(10)与第一位移传感器(9)连接。
  3. 根据权利要求1所述的基桩承载力试验位移测试一体化装置,其特征在于:
    所述位移测试装置包括第二支架(6’)、导向套(13)、弹簧(14)、安装板(15)、第二位移传感器(9’)、位移接触片(16)和定滑轮(17);
    所述定滑轮(17)安装于第二支架(6’)一端下方,所述弹簧(14)安装于第二支架(6’)另一端下方,弹簧(14)一端与导向套(13)连接,所述定 滑轮(17)、弹簧(14)与导向套(13)的安装位置在同一水平轴线上;
    所述第二位移传感器(9’)安装在第二支架(6’)上方的安装板(15)上,安装板(15)通过螺栓固定在支架第二支架(6’)上,所述位移接触片(16)下部位于导向套(13)卡槽中,位移接触片(16)上部与第二位移传感器(9’)连接。
  4. 根据权利要求1所述的基桩承载力试验位移测试一体化装置,其特征在于:
    所述第一位移传感器(9)为卧式安装平放置于第一支架(6)上;
    所述第二位移传感器(9’)为卧式安装于第二支架(6’)的安装板上(15)。
  5. 根据权利要求1所述的基桩承载力试验位移测试一体化装置,其特征在于:第一上位移丝(2)、第二上位移丝(2’)、第一下位移丝(3)和第二下位移丝(3’)外部均设有护管(1)保护。
  6. 根据权利要求1所述的基桩承载力试验位移测试一体化装置,其特征在于:
    所述位移测试装置的数量与第一上位移丝(2)和第一下位移丝(3)的数量之和相等,且每一根第一上位移丝(2)和第一下位移丝(3)均对应连接有一个位移测试装置;
    或者,位移测试装置的数量与第二上位移丝(2’)和第二下位移丝(3’)的数量之和相等,且每一根第二上位移丝(2’)和第二下位移丝(3’)均对应连接有一个位移测试装置。
  7. 一种基桩承载力试验位移测试一体化装置的测试方法,其特征在于:
    该测试方法当使用第一上位移丝(2)和第一下位移丝(3)时:
    A、基桩承载力试验中,当上或下段桩基向上或下移动时,由于另一侧配重块绷直力:弹簧预紧力的作用,第一上位移丝(2)和第一下位移丝(3)向上或下产生相应位移;
    B、第一上位移丝(2)和第一下位移丝(3)产生向上或下位移通过导向杆侧面连接的位移接触杆,导向套卡槽中的位移接触片,将产生的位移量传递至第一位移传感器,记录此时的测试位移量;
    C、完成试验后,将第一上位移丝(2)和第一下位移丝(3)从护管中取出回收利用。
  8. 一种基桩承载力试验位移测试一体化装置的测试方法,其特征在于:
    该测试方法当使用第二上位移丝(2’)和第二下位移丝(3’)时:
    A、基桩承载力试验开始前,连接电源通电,此时电磁铁处于无磁状态,将电源线放入护管中指定位置;
    B、关闭电源,此时电磁铁处于带磁状态,进行基桩承载力试验,当上或下段桩基向上或下移动时,由于另一侧配重块绷直力:弹簧预紧力的作用,第二上位移丝(2’)和第二下位移丝(3’)向上或下产生相应位移;
    C、第二上位移丝(2’)和第二下位移丝(3’)产生向上或下位移通过导向杆侧面连接的位移接触杆,导向套卡槽中的位移接触片,将产生的位移量传递至第二位移传感器(9’),记录此时的测试位移量;
    D、完成试验后,将第二上位移丝(2’)和第二下位移丝(3’)从护管中取出回收利用。
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