CN2175933Y - Deep-foundation flat load testing instrument - Google Patents

Deep-foundation flat load testing instrument Download PDF

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Publication number
CN2175933Y
CN2175933Y CN 93245749 CN93245749U CN2175933Y CN 2175933 Y CN2175933 Y CN 2175933Y CN 93245749 CN93245749 CN 93245749 CN 93245749 U CN93245749 U CN 93245749U CN 2175933 Y CN2175933 Y CN 2175933Y
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CN
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Prior art keywords
dowel
bearing
flange
pressure sensor
testing
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CN 93245749
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Chinese (zh)
Inventor
于贵泉
陈清毅
郑达辉
杨仲汤
卢丽莎
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卢丽莎
于贵泉
陈清毅
郑达辉
杨仲汤
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Abstract

The utility model relates to a testing device for the bearing force of the deep foundation soil of a high-rise building, comprising a bearing plate, a loading device, a reaction device, a displacement testing device and a data processing system, wherein, one end of the transmission rod of the loading device presses tightly on the bearing plate, the other end pushes the middle part of the crossbeam of the reaction device through a lifting jack and a pressure sensor, and the transmission rod is provided with a testing bench; the pressure of the lifting jack is adjusted to cause the bearing plate to move, the testing bench also move simultaneously, and a reading number can test a deformation modulus; the output value of the pressure sensor is bearing force. The utility model is characterized in that the utility model can simulate the force bearing situation of the foundation soil on the spot and directly keeps the testing condition of the native state of a ground body, thus representing the actual situation of the ground body.

Description

本实用新型涉及一种测量仪器,特别是测量高层建筑物深地基土承载力试验装置,属于现场基础土壤勘测领域。 The present invention relates to a measuring instrument, especially the deep foundation soil bearing capacity measurement test equipment high-rise buildings, belonging to the field of on-site soil survey basis.

目前,确定地基承载力常采用两种方法:1.地下水位埋藏较深,可在试坑中直接测定地基承载力和变形模量。 Currently, the bearing capacity of foundation is often determined by two methods: 1 groundwater deeply buried, foundation bearing capacity and can be determined directly in the deformation modulus test pit. 但试坑只能挖至5m左右,超过5m就不安全了,更主要的是地下水埋藏较浅时,试坑只能控至地下水位以上,因此,深基础(>5m)及地下水埋藏较浅,试坑平板载荷试验就无法测试。 But can only test pit dug to about 5m, more than 5m is not safe, but the main thing is shallowly buried underground, can only be controlled to a test pit above the water table, and therefore, deep foundations (> 5m) and shallow groundwater burial , test pit plate loading test can not be tested.

2.当基础埋藏较深,地下水位又埋藏较浅时,需要确定地基承载力和复形模量,可采用钻孔取样,室内试验测得法,钻孔取样时,岩石结构较破碎时就取不了样品,测不出数据,钻孔取样如是在水下,而拿到试验室是在无水条件下,样品则存在失水问题,更主要的是钻孔取样后,原始地应力已释放,所测得的地基承载力和变形模量与实际偏差较大。 2. When the base buried deep, shallow buried and groundwater, and the determined bearing capacity of foundation modulus of complex shape, can be drilling and sampling, measuring the indoor test well, drilling and sampling, when the structure is broken to take the rock samples not measured no data, the case of underwater drilling and sampling, laboratory and get under anhydrous conditions, the sample water loss problems, the main thing is sampled after drilling, the stress was originally released, foundation bearing capacity and deformation modulus measured and the deviation of the actual larger.

本实用新型的目的在于提供一种深基础平板载荷试验仪器,它不受地下水埋深影响,可以直接现场确定建筑物底部以及基础底部以下不同深度的地基承载力和变形模量。 The present invention aims to provide a deep foundation plate loading test instruments, it is not affect the depth of groundwater, the scene may be directly determined based on the following bottom of the building and a bottom ground bearing capacity and deformation modulus different depths.

本实用新型的构思为:直接将测试孔钻至需测试地点深度,放入承压板,通过传力杆和加荷装置使其受力,测出总荷数和承压板下沉的位移值,即得出该地基受力层的承载力和变形模量。 The present invention is conceived to: direct the test well drilled to the depth required test sites, into the pressure plate, through the dowel and so that the force urging means, to determine a total number of charge and the displacement of the bearing plate sinking value, i.e. obtained by the foundation bearing capacity and deformation modulus bearing layers.

图1为本实用新型原理框图。 Figure 1 is a block diagram disclosure.

图2为本实用新型结构图。 FIG 2 of the present invention the structure of FIG.

本实用新型是这样实现的:(参照附图)由承压板(1),加荷装置(2),反力装置(3),位移测试装置(4),数据处理系统(5)等组成深基平板载荷试验仪,其中承压板(1)为园形厚钢板,加荷装置(2)由传力杆(6),千斤顶(7)组成,传力杆(6)为钢管制成,上下两端各固定有一法兰盘(8)、(9),法兰盘(8)与千斤顶(7)底部固定联接,法兰盘(9)紧压在承压板(1)上,距传力杆(6)上端1m左右处焊接有一园形测试台(10),反力装置(3)由横梁(11),配重块(12)等组成,配重块均匀分布在横梁(11)两端,位移测试装置(4)选用4只位移传感器(13),均匀分布在测试台(10)的台面上,使之与中心等距,千斤顶(7)上端通过压力传感器(14)紧紧顶住横梁(11)中部,数据处理系统(5)由压力传感器(14),位移传感器(13) The present invention is achieved :( reference to the figures) by a bearing plate (1), loading means (2), the reaction force means (3), the displacement of the test apparatus (4), the data processing system (5) and the like deep base plate loading tester, wherein the bearing plate (1) is a circular steel plate, the loading device (2) by a dowel (6), the jack (7), with the dowel (6) is made of steel , each of the upper and lower ends are fixed to a flange (8), (9), the flange (8) and the jack (7) fixed to the bottom of the coupling, the flange (9) pressed against the bearing plate (1), from the dowel (6) welded 1m around the upper end has a circular test station (10), a reaction force means (3) by a cross member (11), the counterweight (12) or the like, with weight evenly distributed in the cross member ( 11) ends, displacement measurement means (4) selection of four displacement sensors (13), evenly distributed on the table test station (10), equidistant from the center so that the jack (7) an upper end by a pressure sensor (14) tightly against the cross member (11) central data processing system (5) by the pressure sensor (14), a displacement sensor (13) 到信号处理数据并打印出来。 The signal processing data and prints it.

本实用新型实施时,传力杆可为多段分离式,每段可由各端面的法兰盘联接,总长度不小于30m,横梁为工字钢梁,两端由钢筋吊起钢板作为托盘,托盘及横梁上可堆放配重块,既支撑横梁又组成了反力系统,压力传感器与横梁之间还可放入高度不同的刚性方形调节块(15),以保证千斤顶的在有效行程内加荷,承压板采用厚20mm,φ300mm钢板。 When the embodiment of the present invention, the dowel can split multi-stage, each segment may be coupled to each flange end surface, a total length not less than 30m, I-beam cross beams of both ends of reinforced steel as suspending pallet is and the counterweight can be stacked on the beams, both beams and form the supporting reaction system, it may also be placed in different heights square rigid adjustment block (15) between the pressure sensor and the cross member, to ensure the effective stroke of the jack Neijia He , pressure plate with a thickness of 20mm, 300 mm plate.

本实用新型在使用时,首先将承压板放在钻至需测试深度的孔底部,传力杆底部法兰盘紧压在承压板上,千斤顶上端通过压力传感器(调节块)紧顶在横梁中部,下端固定在传力杆上部和法兰盘上,位移传感器等距放置在测试平台上,起动千斤顶、横梁产生反力,传力杆加压,承压板、测试台产生位移,压力传感器输出读数,以设计荷载的二倍为试验的最大荷载,共分12级,由小至大加荷,各级荷载均需同时测读位移值,每隔10分钟测一次,由数据处理系统读出、运算、打印结果。 The present invention is in use, the first pressure receiving plate on the bottom of the drilled to a depth of a hole to be tested, the dowel is pressed against the bottom of the pressure plate flange, the upper end of the jack by a pressure sensor (adjustment block) in captive jacking central beam, fixed to the lower end of the force transmission rod and the flange portion, a displacement sensor placed equidistant on a test platform, starting jacks, cross reaction force is generated, the dowel pressing, pressure plates, test bench is displaced, the pressure sensor output reading to twice the design load is the maximum load testing, divided into 12, ascending loading, loading levels required to read the measured displacement values ​​simultaneously, once every 10 minutes as measured by the data processing system read, operation, print the results.

本实用新型的特点是测试原理简单、实用可行,具有现场模拟地基受力情况、直观、保持岩土体天然状态的试验条件,数据精确可靠测试结果代表了岩土体的真实情况。 The present invention is characterized by test principle is simple, practical and feasible, having a force field for a simulated soil case, intuitive, natural rock and soil test conditions holding state, the data is accurate and reliable test results represent the real situation of rock and soil. 在同一深孔中又可根据地质需要,自上而下,先后分别测试任何深度的软弱地层及破碎岩体的承载力标准值和变形模量。 In the same turn in deep geological needed, from top to bottom, we have any weak formation depths were tested and the standard value and crushing bearing capacity of rock deformation modulus.

Claims (4)

  1. 1.一种深基础平板载荷试验仪,由承压板(1),加荷装置(2),反力装置(3),位移测试装置(4)等构成,其特征在于:加荷装置(2)由传力杆(6),千斤顶(7)组成,传力杆(6)由钢管制成,上下两端各固定有一法兰盘(8)、(9),法兰盘(8)与千斤顶(7)底部固定联接,法兰盘(9)紧压在承压板(1)上,距传力杆(6)上端1m处焊接一测试台(10),反力装置(3)由横梁(11),配重块(12)等组成,配重块(12)均匀分布在横梁(11)两端,4只位移传感器(13)构成位移测试装置(4),均匀分布测试台(10)的台面上,使之与中心等距,千斤顶(7)的上部通过压力传感器(14)紧紧顶住横梁(11)的中部。 A deep foundation plate loading tester, the bearing plate (1), loading means (2), the reaction force means (3), displacement measurement means (4) or the like, comprising: loading means ( 2) by a dowel (6), the jack (7), with the dowel (6) is made of steel, is fixed to the respective upper and lower ends a flange (8), (9), the flange (8) the jack (7) fixed to the bottom of the coupling, the flange (9) pressed against the bearing plate (1), from the dowel (6) are welded at the upper end of a 1m test station (10), a reaction force means (3) a cross member (11), the counterweight (12) or the like, the counterweight (12) are uniformly distributed in the cross member (11) at both ends, four displacement sensors (13) constituting the displacement measurement means (4), uniformly distributed test units (10) of the table, so that the equidistant from the center, the upper jacks (7) tightly against the middle cross member (11) by the pressure sensor (14).
  2. 2.根据权利要求1所述的深基础平板载荷试验仪,其特征在于:压力传感器(14)与横梁(11)之间还可放入高度不同的刚性方形调节块(15)。 The deep foundation plate load tester according to claim 1, characterized in that: further into different square highly rigid adjustment block (15) between the pressure sensor (14) with the beam (11).
  3. 3.根据权利要求1或2所述的深基础平板载荷试验仪,其特征在于:传力杆可为多段分离式,每段由各端面的法兰盘联接,总长度不小于30m。 The deep foundation plate load tester of claim 1 or claim 2, wherein: the dowel may be a multi-stage split, each end face of each flange is coupled, the total length not less than 30m.
  4. 4.根据权利要求1或2所述的深基础平板载荷试验仪,其特征在于:横梁为工字钢梁,两端由钢筋吊起钢板作为托盘,配重块可堆放在托盘、横梁上。 The deep foundation plate load tester of claim 1 or claim 2, wherein: for the I-beam cross beam, both ends of the steel sheet as lifted tray, the counterweight can be stacked in the tray, on the beam.
CN 93245749 1993-11-24 1993-11-24 Deep-foundation flat load testing instrument CN2175933Y (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100449063C (en) 2007-01-16 2009-01-07 聂德新 Dead load type subbase deformation measuring method and device
WO2011022932A1 (en) * 2009-08-26 2011-03-03 中冶集团武汉勘查研究院有限公司 Testing method and device for foundation bed coefficient test
CN102061712A (en) * 2010-12-30 2011-05-18 中交第三航务工程局有限公司 Underwater sand conpaction pile composite foundation test system
CN102277884A (en) * 2011-05-17 2011-12-14 浙江大学城市学院 Vertical static load test pile head processing apparatus and method of construction
CN102445398A (en) * 2011-10-24 2012-05-09 黄河勘测规划设计有限公司 Simulation testing method of soft rock and hard soil mechanical characteristics
CN101519870B (en) 2008-10-09 2013-04-17 株式会社韩国港湾技术团 Construction method for treating soft groundwork surface layer by using bamboo web
CN103225320A (en) * 2013-05-10 2013-07-31 广东工业大学 Electromagnetic type dynamic plate load test detecting device and method
CN103243701A (en) * 2013-05-10 2013-08-14 广东工业大学 Light and convenient electromagnetic high-energy dynamic compaction device and method and application
CN103541338A (en) * 2012-07-17 2014-01-29 许年春 Soil mass test flexible bearing plate
CN104074209A (en) * 2014-07-10 2014-10-01 安徽省金田建筑设计咨询有限责任公司 Deep plate loading test device
CN104089826A (en) * 2014-07-29 2014-10-08 中铁第一勘察设计院集团有限公司 Testing device and method for compression deformation modulus and strength of soil body in deep hole
CN104198360A (en) * 2014-08-28 2014-12-10 华东交通大学 Simulation experiment device for coupling effect of acid rain, dampness heat and mechanical load
CN104404940A (en) * 2014-12-05 2015-03-11 西南交通大学 High-pressure, waterproof and self-stabilized type load testing device for deep soil layer
CN104502197A (en) * 2014-12-31 2015-04-08 南京林业大学 Continuous prepressing test method and continuous prepressing test device for medium-density fiberboard blank
CN105092222A (en) * 2015-06-19 2015-11-25 重庆大学 Loading apparatus for bearing strength test of girder integral body stability

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100449063C (en) 2007-01-16 2009-01-07 聂德新 Dead load type subbase deformation measuring method and device
CN101519870B (en) 2008-10-09 2013-04-17 株式会社韩国港湾技术团 Construction method for treating soft groundwork surface layer by using bamboo web
WO2011022932A1 (en) * 2009-08-26 2011-03-03 中冶集团武汉勘查研究院有限公司 Testing method and device for foundation bed coefficient test
GB2488053A (en) * 2009-08-26 2012-08-15 Wuhan Surveying Geotechnical Res Inst Co Ltd Of Mcc Testing method and device for coefficient of subgrade reaction test
GB2488053B (en) * 2009-08-26 2013-07-31 Wuhan Surveying Geotechnical Res Inst Co Ltd Of Mcc Testing device for coefficient of subgrade reaction test
CN102061712A (en) * 2010-12-30 2011-05-18 中交第三航务工程局有限公司 Underwater sand conpaction pile composite foundation test system
CN102277884A (en) * 2011-05-17 2011-12-14 浙江大学城市学院 Vertical static load test pile head processing apparatus and method of construction
CN102277884B (en) 2011-05-17 2013-05-22 浙江大学城市学院 Device for treating pile head for vertical static load test and construction method thereof
CN102445398A (en) * 2011-10-24 2012-05-09 黄河勘测规划设计有限公司 Simulation testing method of soft rock and hard soil mechanical characteristics
CN103541338A (en) * 2012-07-17 2014-01-29 许年春 Soil mass test flexible bearing plate
CN103243701A (en) * 2013-05-10 2013-08-14 广东工业大学 Light and convenient electromagnetic high-energy dynamic compaction device and method and application
CN103225320A (en) * 2013-05-10 2013-07-31 广东工业大学 Electromagnetic type dynamic plate load test detecting device and method
CN103243701B (en) * 2013-05-10 2015-05-06 广东工业大学 Light and convenient electromagnetic high-energy dynamic compaction device and method and application
CN104074209A (en) * 2014-07-10 2014-10-01 安徽省金田建筑设计咨询有限责任公司 Deep plate loading test device
CN104074209B (en) * 2014-07-10 2016-04-06 安徽省金田建筑设计咨询有限责任公司 Deep plate loading test apparatus
CN104089826A (en) * 2014-07-29 2014-10-08 中铁第一勘察设计院集团有限公司 Testing device and method for compression deformation modulus and strength of soil body in deep hole
CN104198360A (en) * 2014-08-28 2014-12-10 华东交通大学 Simulation experiment device for coupling effect of acid rain, dampness heat and mechanical load
CN104404940A (en) * 2014-12-05 2015-03-11 西南交通大学 High-pressure, waterproof and self-stabilized type load testing device for deep soil layer
CN104404940B (en) * 2014-12-05 2016-04-13 西南交通大学 One kind of high-pressure water from deep soil-stable load test apparatus
CN104502197A (en) * 2014-12-31 2015-04-08 南京林业大学 Continuous prepressing test method and continuous prepressing test device for medium-density fiberboard blank
CN104502197B (en) * 2014-12-31 2017-08-11 南京林业大学 A medium density fiberboard test method of continuous preloading
CN105092222A (en) * 2015-06-19 2015-11-25 重庆大学 Loading apparatus for bearing strength test of girder integral body stability
CN105092222B (en) * 2015-06-19 2017-08-29 重庆大学 One kind of steel beam stabilizing means loading carrying capacity test

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