CN1243900A - Light contact-inspection tester for test slot of foundation - Google Patents
Light contact-inspection tester for test slot of foundation Download PDFInfo
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- CN1243900A CN1243900A CN 98118026 CN98118026A CN1243900A CN 1243900 A CN1243900 A CN 1243900A CN 98118026 CN98118026 CN 98118026 CN 98118026 A CN98118026 A CN 98118026A CN 1243900 A CN1243900 A CN 1243900A
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- hammer
- foundation
- pointed cone
- cone head
- sounding
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A light contact-inspection tester for foundation is composed of tipped conic head, contact inspection rod, hammer beating plate, centralized hammer, limiting steel pin, two pulleys, U-shaped suspending rings of pulleys, suspending plate of pulleys, and flexible rope. It technically features that the beating parameters of centralized hammer and the geometries of tipped conic head conform with the specification. The contact inspection rod vertically stands on ground. The number of hammer beatings for 300 mm depth in ground is just the test structure data N10, based which the allowable load capability [R] of foundation can be found out as there is a function relation between N10 and [R].
Description
The invention belongs to the Construction of Civil Engineering technical field.
After civil engineering (comprising building, the structure) unwrapping wire that goes into operation breaks ground, when foundation trench/hole excavation reaches projected depth, all want requisite this program of test slot of foundation of carrying out, whether the allowable bearing capacity of foundation soil [R] at this degree of depth place of site inspection meets design requirement.
Test slot of foundation is a requisite program in the Construction of Civil Engineering.When in the engineering construction practice, implementing this program for many years, owing to lack the equipment that can carry out light sounding test at the construction field (site), just observe foundation soil state and classification during test slot of foundation with eyes, can only draw qualitative conclusion by check of foundation subsoil, can not get quantitative data---allowable bearing capacity of foundation soil [R].Present situation that Here it is, technical background just of the present invention.
At test slot of foundation present situation situation, according to design specifications and the job specfication standard of country about ground and basic this respect, during for enforcement test slot of foundation program, a kind of light contact-inspection tester that use the job site of being convenient to is provided, pass through light sounding test, make test slot of foundation can obtain meeting the quantitative data of the bearing capacity of foundation soil [R] of national regulation standard, this program of enforcement test slot of foundation is based upon on the scientific basic that meets the national regulation standard.
By " industry and civilian construction basic design specification of the foundation TJ7-74 (trying) " of editing by building science academy of State Infrastructure Commission, State Infrastructure Commission of the People's Republic of China (PRC) ratifies, China Construction Industry Press the publishes technical standard that is provided and practicality requirement of being convenient to use, formulate the technical scheme of light contact-inspection tester of the present invention at each engineering construction scene.Light contact-inspection tester mainly is made up of pointed cone head, sounding rod, the stopping means up and down that punching is hammered into shape, hammer pumps and five parts such as transmission device that the hammer generation is pumped.The strict specification technique standard of pressing:
1, pointed cone head bottom is fixed to a cone; Be sized to cone external diameter Φ 40mm, the cone height is that 34.64mm, cone angle are 60 °, pointed cone head shaped upper part and size are seen accompanying drawing, pointed cone head overall height is 58.64mm.What the pointed cone head was firm is welded on the sounding rod.
2, the sounding rod external diameter is the seamless steel pipe of Φ 25mm, and pipe range 2641.36mm adds total length 2700mm behind the pointed cone head height degree; Count from pointed cone head tip, every the together tangible graduation mark of 300mm mark, graduation mark is totally five roads.
3, the punching hammer is steel product, profile is a cylinder, external diameter Φ 120mm, punching core bore dia is Φ 27mm, high 117.4mm, two of upper surface such as accompanying drawing weldering drop handles, two drop handles weigh 96 grams, punching hammer gross weight is 9995 grams (considering has tether to exist on the hammer, add the heavy factor of rope during the whereabouts, can reach 10000 grams of code requirement).
4, hammering the lower limit device that pumps into shape is the hammering plate, make with the 14mm steel plate, circumscribed circle is of a size of Φ 80mm, the plate central spot is the hole of a Φ 30mm, penetrate behind the sounding rod as firm being welded on the sounding rod of accompanying drawing, bear hammering and beat, hammer force is transmitted on the pointed cone head by sounding rod; The upper limit device that hammer pumps is spacing steel pin, sells long 60mm, the thick Φ 16mm of pin, is horizontally through sounding rod and is welded on the shaft.Clearance between the epithelium of the hypodermis of spacing steel pin and hammering plate is 500mm.
In order to satisfy the practicality requirement, this light contact-inspection tester is a manual equipment, by the pulley guiding, with the transmission of Φ 8mm nylon rope, forms transmission device by suspention plate, suspension ring, pulley, soft nylon rope.Spur repeatedly and loosen nylon rope with hand, the punching hammer is produced pump, the pointed cone head is impacted, realize light sounding test.
The technical characterictic of this light contact-inspection tester is that the geometry size that impacts parameter (hammer heavily is fixed as 10kg, falls apart from being fixed as 500mm) and pointed cone head of punching hammer all meets " TJ7-74 " code requirement, sounding rod is vertically stood on the soil layer, whenever squeeze into the hammering number that 300mm is dark in the soil layer and be the resulting result of the test data of light sounding test N
10, N has been arranged
10Just can try to achieve allowable bearing capacity of foundation soil [R], count N because established the light sounding test hammering in " TJ7-74 " standard
10, with the functional relation of allowable bearing capacity of foundation soil [R].
N in the standard " TJ7-74 "
10Be expressed as follows with tabular form with the functional relation of [R]:
1, general cohesive soil allowable bearing [R]
| N is counted in the light sounding test hammering 10 | ??15 | ????20 | ????25 | ??30 |
| Allowable bearing [R] (ton/square metre) | ??10 | ????14 | ????18 | ??22 |
2, viscosity plain fill allowable bearing [R]
| N is counted in the light sounding test hammering 10 | ???10 | ????20 | ????30 | ??40 |
| Allowable bearing [R] (ton/square metre) | ???8 | ????11 | ????13 | ??15 |
The present invention has following tangible beneficial effect:
One, described in [technical background], when in the engineering construction practice, implementing this program of test slot of foundation for many years, owing to lack the equipment that can carry out light sounding test at the construction field (site), just observe foundation soil state and classification during test slot of foundation with eyes, can only draw qualitative conclusion by check of foundation subsoil, can not get quantitative data---allowable bearing capacity of foundation soil [R]. light contact-inspection tester for test slot of foundation of the present invention can be directly in each implements the foundation trench of test slot of foundation program, make light sounding test on the spot, draw the quantitative data of the allowable bearing capacity of foundation soil [R] that meets the national regulation standard, the check of foundation subsoil program is based upon on the scientific basic that meets the national regulation standard.
Two, the present invention is the special equipment of implementing the test slot of foundation program, determining allowable bearing capacity of foundation soil [R], has filled up the blank in this specific area.
Three, every Construction of Civil Engineering all will be implemented this program of test slot of foundation, and the present invention is a special equipment of implementing this program, and it all will be used in each job site, and this has just determined that its practicality must be very strong.For this reason, structural feature of the present invention is: it is a manual equipment, unpowered equipment, power supply not, and simple structure is light, and be easy to carry, carry, when implementing light sounding test, simple to operate, safety.
Figure of description and Figure of abstract are the constructional drawings of [light contact-inspection tester for test slot of foundation].Among the figure: the 1st, the pointed cone head; The 2nd, sounding rod; The 3rd, the hammering plate; The 4th, the punching hammer; The 5th, spacing steel pin; The 6th, pulley, totally two; The 7th, pulley U-shaped suspension ring, Φ 10mm, two termination car silks of U-shaped use fixed by nut on 8; The 8th, pulley suspention plate, thickness of slab 6mm, wide 120mm, long 150mm, the plate central spot has the hole of a Φ 26mm, and from then on 2 upper ends are passed in the hole and are made firm being welded on 2 the shaft of plate, and the aperture of four Φ 12mm is arranged on the plate, fix 7 usefulness; The 9th, soft rope, with Φ 8mm nylon rope, the present invention is a manual equipment, 9 gearings.
The present invention is a light contact-inspection tester, it is the special equipment of implementing the test slot of foundation program, structural feature of the present invention is that it is a manual equipment, simple structure is as accompanying drawing: the stopping means up and down that is pumped by pointed cone head, sounding rod, punching hammer, hammer and make hammer produce five parts such as transmission device that pump to form.Wherein hammering the stopping means up and down that pumps into shape forms by 3,5; Making hammer produce the transmission device that pumps forms by 6,7,8,9.
This light contact-inspection tester is by 1-9, totally 9 component are formed, wherein there is ready-made finished product available on 2,6,9 three markets, but to add scale mark on 2, all the other six component are steel product, to manufacture by the requirement processing of this manual and accompanying drawing, assembling is during finished product, and 4 at first penetrate in 2, and 1,3,5,8 are weldingly fixed on 2 by accompanying drawing; 7 be fixed on 8 then, 6 are suspended on 7, and 9 are folded in half into two stocks, and not pass two 6 be on being connected on two suspension ring of 4.All processing, production process finish, and become finished product.
In making this manual equipment process, pay special attention to following 5 points:
(1), five road scales on 2 to guarantee apart from size accurately, mark not only obviously but also firm; (2), to guarantee that 4 finished weight is 9995 grams ± 1 grams, hammer falls to considering when impacting the existence of the part weight factor (5 gram) of tether 9, the weight of the state hour hammer that causes to fall and break accurately is 10000 grams, in strict conformity with codes and standards; (3), to guarantee that 3 to 5 clearance is 500mm ± 0.1mm, in strict conformity with codes and standards; (4), 1 side will guarantee to be smooth bright and clean surface, and the accuracy that will note 1 geometry and size is in ± 0.1mm; (5), want apply oil in 6 the bearing, make its coefficient of rolling friction drop to bottom line, guarantee that 4 is the free-falling state when moving downward.
Noted above each point in this equipment making, keeping and use, the present invention just can be in optimum state when bringing into play its function in this specific area of test slot of foundation.
Claims (3)
- The invention belongs to the Construction of Civil Engineering technical field.After civil engineering (comprising building, the structure) unwrapping wire that goes into operation breaks ground, when foundation trench/hole excavation reaches projected depth, all want requisite this program of test slot of foundation of carrying out, whether the allowable bearing capacity of foundation soil [R] at this degree of depth place of site inspection meets design requirement.1, light contact-inspection tester for test slot of foundation mainly is made up of pointed cone head, sounding rod, the stopping means up and down that punching is hammered into shape, hammer pumps and five parts such as transmission device that the hammer generation is pumped.Strict with the specification technique standard: pointed cone head bottom is fixed to a cone; Be sized to cone external diameter Φ 40mm, the cone height is that 34.64mm, cone angle are 60 °, pointed cone head shaped upper part and size are seen accompanying drawing, pointed cone head overall height is 58.64mm.What the pointed cone head was firm is welded on the sounding rod.The sounding rod external diameter is the seamless steel pipe of Φ 25mm, and pipe range 2641.36mm adds total length 2700mm behind the pointed cone head height degree; Count from pointed cone head tip, every the together tangible graduation mark of 300mm mark, graduation mark is totally five roads.The punching hammer is steel product, and profile is a cylinder, and external diameter Φ 120mm, punching core bore dia are Φ 27mm, high 117.4mm, and two of upper surface such as accompanying drawing weldering drop handles, two drop handles weigh 96 grams, and punching hammer gross weight is 9995 grams.The lower limit device that hammer pumps is the hammering plate, makes with the 14mm steel plate, and circumscribed circle is of a size of Φ 80mm, the plate central spot is the hole of a Φ 30mm, penetrate behind the sounding rod as firm being welded on the sounding rod of accompanying drawing, bear hammering and beat, hammer force is transmitted on the pointed cone head by sounding rod; The upper limit device that hammer pumps is spacing steel pin, sells long 60mm, the thick Φ 16mm of pin, is horizontally through sounding rod and is welded on the shaft.Clearance between the epithelium of the hypodermis of spacing steel pin and hammering plate is 500mm.In order to satisfy the practicality requirement, this light contact-inspection tester is a manual equipment, by the pulley guiding, with the transmission of Φ 8mm nylon rope, forms transmission device by suspention plate, suspension ring, pulley, soft nylon rope.Spur repeatedly and loosen nylon rope with hand, the punching hammer is produced pump, the pointed cone head is impacted, realize light sounding test.
- 2, according to claim 1, technical characterictic of the present invention is that the geometry size that impacts parameter (hammer heavily is fixed as 10kg, falls apart from being fixed as 500mm) and pointed cone head of punching hammer all meets " TJ7-74 " code requirement, sounding rod is vertically stood on the soil layer, whenever squeeze into the hammering number that 300mm is dark in the soil layer and be the resulting result of the test data of light sounding test N 10, N has been arranged 10Just can try to achieve allowable bearing capacity of foundation soil [R], count N because established the light sounding test hammering in " TJ7-74 " standard 10, with the functional relation of allowable bearing capacity of foundation soil [R].
- 3, according to claim 1, structural feature of the present invention is in order to satisfy the practicality requirement, and this light contact-inspection tester is a manual equipment, leads by pulley, with the transmission of Φ 8mm nylon rope, form transmission device by suspention plate, suspension ring, pulley, soft nylon rope.Spur repeatedly and loosen nylon rope with hand, the punching hammer is produced pump, the pointed cone head is impacted, realize light sounding test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98118026 CN1243900A (en) | 1998-08-03 | 1998-08-03 | Light contact-inspection tester for test slot of foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98118026 CN1243900A (en) | 1998-08-03 | 1998-08-03 | Light contact-inspection tester for test slot of foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1243900A true CN1243900A (en) | 2000-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98118026 Pending CN1243900A (en) | 1998-08-03 | 1998-08-03 | Light contact-inspection tester for test slot of foundation |
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| Country | Link |
|---|---|
| CN (1) | CN1243900A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306255A (en) * | 2013-07-01 | 2013-09-18 | 浙江大学 | Box-type power penetrometer without feeler lever and probing method thereof |
| CN103376094A (en) * | 2013-07-03 | 2013-10-30 | 中国矿业大学(北京) | River and lake sand collecting detecting instrument and river and lake sand collecting detection method |
| CN103924571A (en) * | 2014-04-18 | 2014-07-16 | 天津市市政工程设计研究院 | Dynamic penetration instrument |
| CN105856205A (en) * | 2016-06-17 | 2016-08-17 | 中国矿业大学 | Parallel flexible cable suspension simulation system and parallel flexible cable suspension simulation method employing same |
| CN107022994A (en) * | 2017-04-07 | 2017-08-08 | 东南大学 | A kind of miniature dynamic spy instrument and method of testing |
-
1998
- 1998-08-03 CN CN 98118026 patent/CN1243900A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306255A (en) * | 2013-07-01 | 2013-09-18 | 浙江大学 | Box-type power penetrometer without feeler lever and probing method thereof |
| CN103376094A (en) * | 2013-07-03 | 2013-10-30 | 中国矿业大学(北京) | River and lake sand collecting detecting instrument and river and lake sand collecting detection method |
| CN103924571A (en) * | 2014-04-18 | 2014-07-16 | 天津市市政工程设计研究院 | Dynamic penetration instrument |
| CN105856205A (en) * | 2016-06-17 | 2016-08-17 | 中国矿业大学 | Parallel flexible cable suspension simulation system and parallel flexible cable suspension simulation method employing same |
| CN107022994A (en) * | 2017-04-07 | 2017-08-08 | 东南大学 | A kind of miniature dynamic spy instrument and method of testing |
| CN107022994B (en) * | 2017-04-07 | 2019-10-11 | 东南大学 | The miniature dynamic spy instrument of one kind and test method |
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