CN105525635B - The loading device detected for pile foundation axial bearing capacity - Google Patents
The loading device detected for pile foundation axial bearing capacity Download PDFInfo
- Publication number
- CN105525635B CN105525635B CN201610030964.XA CN201610030964A CN105525635B CN 105525635 B CN105525635 B CN 105525635B CN 201610030964 A CN201610030964 A CN 201610030964A CN 105525635 B CN105525635 B CN 105525635B
- Authority
- CN
- China
- Prior art keywords
- base
- cylinder barrel
- pile foundation
- bearing capacity
- axial bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Abstract
The present invention relates to pile measurement field, more particularly to a kind of loading device detected for pile foundation axial bearing capacity, including the base being arranged at the top of pile foundation to be measured, pressure sensor is provided between the base and pile foundation top surface to be measured, a cylinder barrel is provided with above the base, Open Side Down tips upside down on closed cavity is formed on base for the cylinder barrel, and balancing weight is provided with above the cylinder barrel, it is characterised in that：The excitation apparatus for being used for exciting high-efficient pressurizing agent is provided with the closed cavity formed between the cylinder barrel and base in filling high-efficient pressurizing agent and non-ignitable liquid, the cylinder barrel, the excitation apparatus includes the striker for being used to hit high-efficient pressurizing agent.The acceleration that the gases at high pressure that high-efficient pressurizing agent discharges after exciting promote ballast upward can reach 20 times of acceleration of gravity, the size of loading effect power, action time can be controlled by the stroke for size, the dosage of hypertensor, cylinder barrel and the base for adjusting cylinder barrel, detection speed is fast, loading efficiency is high, and cost is low.
Description
Technical field
The present invention relates to pile measurement field, more particularly to a kind of loading device detected for pile foundation axial bearing capacity.
Background technology
Pile foundation is the supporting member being delivered to superstructure load in Rock soil Foundation, the safety of engineering structure is played to
Close important effect.To ensure engineering safety, pile foundation construction completes generally carry out loading test whether to determine its bearing capacity
Design requirement is met, the loading method of loading test mainly has ballast method, anchored pile-testing method and anchoring pile ballast combination method, used during experiment
Above method is further applied load at the top of pile foundation, surveys every grade of loading and pile head settlement amount, is closed by analyzing load with pile head settlement
It is curve, determines the size of bearing capacity of pile foundation.Met because ballast method needs the load material of hundreds of tons of even upper kilotons to originate
The requirement of loading capacity, anchored pile-testing method need to set the reaction beam of many anchoring piles and the upper kiloton of carrying, the loading system of these conventional methods
Set up, load bank and put and need to expend substantial amounts of man power and material with transport etc., and easily by loading tonnage and field test
The limitation of site condition, test period is long, and testing expenses are expensive, has a strong impact on engineering construction progress, increases construction cost.
The content of the invention
It is an object of the invention to provide a kind of loading device detected for pile foundation axial bearing capacity, detection efficiency is improved,
Reduce testing cost.
To achieve the above object, the invention provides following technical scheme：It is a kind of to be used for what pile foundation axial bearing capacity was detected
Loading device, including the base at the top of pile foundation to be measured is arranged on, pressure sensing is provided between the base and pile foundation top surface to be measured
It is provided with a cylinder barrel above device, the base, Open Side Down tips upside down on closed cavity is formed on base for the cylinder barrel, on the cylinder barrel
Side is provided with balancing weight, it is characterised in that：Filled out in the closed cavity formed between the cylinder barrel and base and put high-efficient pressurizing agent, and filled
Enter the excitation apparatus for being provided with non-ignitable liquid, the cylinder barrel and being used for exciting high-efficient pressurizing agent, the excitation apparatus includes being used for
Hit the striker of high-efficient pressurizing agent.
The technical effects of the invention are that：Loading device is made up of several parts, is readily transported, assembled with dismounting, efficiently
The acceleration that the gases at high pressure that hypertensor discharges after exciting promote ballast upward can reach 20 times of acceleration of gravity, loading effect
The size of power, action time can be controlled by the stroke for size, the dosage of hypertensor, cylinder barrel and the base for adjusting cylinder barrel,
Detection speed is fast, and loading efficiency is high, and cost is low.
Brief description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the cylinder structure schematic diagram of the present invention；
Fig. 3 be the present invention excite tubular construction schematic diagram.
Embodiment
As shown in Figure 1, 2, a kind of loading device detected for pile foundation axial bearing capacity, including be arranged on pile foundation a to be measured
The base 10 at top, is provided with pressure sensor 11 between the base 10 and pile foundation a top surfaces to be measured, the top of base 10 is provided with
One cylinder barrel 12, Open Side Down tips upside down on closed cavity is formed on base 10 for the cylinder barrel 12, and the top of cylinder barrel 12 is provided with counterweight
Filled out in block, the closed cavity formed between the cylinder barrel 12 and base 10 and put high-efficient pressurizing agent 2, being provided with the cylinder barrel 12 is used for
The excitation apparatus 13 of high-efficient pressurizing agent 2 is excited, the excitation apparatus 13 includes the striker 131 for being used to hit high-efficient pressurizing agent 2.It is high
Effect hypertensor 2 is made up of three parts, multi-polyester tubular container, filler and trigger head, and filler is 70% nitrocellulose and 30% oxygen
The mixture of agent.The trigger head of high-efficient pressurizing agent is excited under high pressure effect, and filler mixture generates a large amount of innocuous gas, main
It is nitrogen, carbon dioxide and vapor to want composition.
As shown in Figure 2,3, the excitation apparatus 13 also includes exciting pipe 132, described to excite pipe 132 including closed at both ends
High-efficient pressurizing agent 2 is also filled with tubular container 1, tubular container 1, one end of tubular container 1 is provided with being capable of hitting striker 131
Hit the trigger head 3 that power is transferred to inside tubular container 1.
It is preferred that, as shown in Fig. 2 the high-efficient pressurizing agent 2 in the closed cavity is filled in multiple supercharging bullets 30 again, institute
The structure for stating supercharging bullet 30 is identical with the structure for exciting pipe 132.
Further, each supercharging bullet 30 is deposited in the closed cavity, and non-ignitable liquid is poured into closed cavity, is used for
Space between each supercharging bullet 30 of filling, and the pressure propagation medium after being excited as high-efficient pressurizing agent 2, improve loading effect.
It is preferred that, the striker 131 is by electronic trigger remote control.
Further, as shown in figure 1, described balancing weight includes ballast base 14, saddle weight 15 and lead 16, pressure
Weight base 14 and the top of cylinder barrel 12 are affixed, and lead 16 is arranged in vertical and its lower end is fixed on ballast base 14, presses
The through hole that is provided centrally with of pouring weight 15 passes through for lead 16, and the periphery of lead 16 is provided with screw thread and lead 16 is away from pressure
One end of weight base 14 is provided with stop nut 17, and saddle weight 15 and 14, ballast bottom are fixed together by stop nut 17.
Further, device also includes the support mechanism 20 for being used to help balancing weight, and described support mechanism 20 passes through branch
Support base 22 is fixed on the ground, and support base 22 includes the support frame being fixedly connected with support mechanism 20 and support frame lower section
Supporting leg 23, the height adjustable of supporting leg 23, described support mechanism 20 is spliced section by section from bottom to top by multiple guiding trusses,
The balancing weight is located in the passage that each guiding trusses are surrounded.
Further, on the inside of each truss provided with can make on balancing weight during motion upwards it is unimpeded, move downward when stop
The detent mechanism 21 returned.One-way braking means：The thorn wheel shift fork that similar vehicles are slowed down, the rising of counterweight is not influenceed, and counterweight rises
After brake position, brake automatic spring into leading truck forms the step for preventing counterweight from falling after rise.It is larger to avoid
Fall impulsive force after rise, counterweight is risen to up to summit on top, just falls smaller height after rise, just brake, so impact small.
The loading device of the present invention is made up of several parts, is readily transported, assembled with dismounting, and high-efficient pressurizing agent is released after exciting
The acceleration that the gases at high pressure put promote ballast upward can reach 20 times of acceleration of gravity, the size of loading effect power, effect
Time can be controlled by the stroke for size, the dosage of hypertensor, cylinder barrel and the base for adjusting cylinder barrel, and detection speed is fast, plus
Efficiency high is carried, cost is low.
Claims (6)
1. a kind of loading device detected for pile foundation axial bearing capacity, including it is arranged on the base at the top of pile foundation (a) to be measured
(10), it is provided with above pressure sensor (11), the base (10) and is provided between the base (10) and pile foundation (a) top surface to be measured
One cylinder barrel (12), Open Side Down tips upside down on closed cavity is formed on base (10) for the cylinder barrel (12), above the cylinder barrel (12)
Provided with balancing weight, it is characterised in that：Filling high-efficient pressurizing in the closed cavity formed between the cylinder barrel (12) and base (10)
The excitation apparatus (13) for being used for exciting high-efficient pressurizing agent (2) is provided with agent (2) and non-ignitable liquid, the cylinder barrel (12), it is described
Excitation apparatus (13) includes the striker (131) for being used to hit high-efficient pressurizing agent (2)；
Device also includes the support mechanism (20) for being used to help balancing weight, and described support mechanism (20) passes through support base (22)
Fix on the ground, support base (22) is included with helping the branch below mechanism (20) support frame that is fixedly connected and support frame
Leg (23), the height adjustable of supporting leg (23), described support mechanism (20) by multiple guiding trusses from bottom to top section by section splicing and
Into the balancing weight is located in the passage that each guiding trusses are surrounded；
On the inside of each truss provided with can make on balancing weight during motion upwards it is unimpeded, move downward when non-return detent mechanism
(21)。
2. the loading device according to claim 1 detected for pile foundation axial bearing capacity, it is characterised in that：It is described to excite
Device (13) also includes exciting pipe (132), described to excite pipe (132) to include tubular container (1) closed at both ends, tubular container
(1) high-efficient pressurizing agent (2) is also filled with, one end of tubular container (1) is provided with and can be transferred to the impact of striker (131)
The internal trigger head (3) of tubular container (1).
3. the loading device according to claim 2 detected for pile foundation axial bearing capacity, it is characterised in that：It is described closed
High-efficient pressurizing agent (2) in cavity and be filled in respectively in multiple supercharging bullets (30), the structure of the supercharging bullet (30) with it is described
Excite the structure of pipe (132) identical.
4. the loading device according to claim 3 detected for pile foundation axial bearing capacity, it is characterised in that：Each supercharging bullet
(30) it is deposited in the closed cavity, non-ignitable liquid is poured into closed cavity, for fills each be pressurized between bullet (30)
Space, and the pressure propagation medium after being excited as high-efficient pressurizing agent (2), improve loading effect.
5. the loading device according to claim 4 detected for pile foundation axial bearing capacity, it is characterised in that：The striker
(131) by electronic trigger remote control.
6. the loading device detected as claimed in claim 1 for pile foundation axial bearing capacity, it is characterised in that：Described counterweight
Block includes ballast base (14), saddle weight (15) and lead (16), and ballast base (14) and cylinder barrel (12) top are affixed, lead
Arranged to post (16) in vertical and its lower end is fixed on ballast base (14), saddle weight (15) is provided centrally with through hole
Pass through for lead (16), the periphery of lead (16) is provided with screw thread and the one end of lead (16) away from ballast base (14)
Stop nut (17) is provided with, saddle weight (15) and ballast base (14) are fixed together by stop nut (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030964.XA CN105525635B (en) | 2016-01-18 | 2016-01-18 | The loading device detected for pile foundation axial bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030964.XA CN105525635B (en) | 2016-01-18 | 2016-01-18 | The loading device detected for pile foundation axial bearing capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105525635A CN105525635A (en) | 2016-04-27 |
| CN105525635B true CN105525635B (en) | 2017-09-15 |
Family
ID=55768130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610030964.XA Expired - Fee Related CN105525635B (en) | 2016-01-18 | 2016-01-18 | The loading device detected for pile foundation axial bearing capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105525635B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179768B (en) * | 2018-02-08 | 2023-12-26 | 中交四航工程研究院有限公司 | Pile foundation bearing capacity detection method |
| CN110847254B (en) * | 2019-11-22 | 2021-05-14 | 苏州恒信建设技术开发检测有限公司 | Loading device for detecting axial bearing capacity of pile foundation |
| CN111733902B (en) * | 2020-07-07 | 2021-10-08 | 南通科创建设工程检测有限公司 | Efficient pile foundation bearing capacity detection device |
| CN117309362B (en) * | 2023-11-28 | 2024-01-26 | 瑞特认证检测集团有限公司 | Integrated quick-loading pile foundation detection device and detection method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1296925C (en) * | 1988-04-07 | 1992-03-10 | Patrick Bermingham | Test system for caissons and piles |
| CN2090835U (en) * | 1991-02-06 | 1991-12-18 | 徐州市建筑工程研究所 | Loading device for testing vertical bearing capacity of single pile |
| JPH10274576A (en) * | 1997-03-31 | 1998-10-13 | Hazama Gumi Ltd | Load testing device and load testing method |
| CN204703199U (en) * | 2015-04-20 | 2015-10-14 | 交通运输部公路科学研究所 | Novel pile foundation loading test charger |
| CN205475364U (en) * | 2016-01-18 | 2016-08-17 | 交通运输部公路科学研究所 | A loading device for pile foundation axial bearing capacity detecting |
-
2016
- 2016-01-18 CN CN201610030964.XA patent/CN105525635B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105525635A (en) | 2016-04-27 |
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Granted publication date: 20170915 Termination date: 20200118 |