CN111719598B - Jack-side hanging type static load test main beam - Google Patents
Jack-side hanging type static load test main beam Download PDFInfo
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- CN111719598B CN111719598B CN201910223370.4A CN201910223370A CN111719598B CN 111719598 B CN111719598 B CN 111719598B CN 201910223370 A CN201910223370 A CN 201910223370A CN 111719598 B CN111719598 B CN 111719598B
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- jack
- beam body
- main beam
- connecting bolt
- static load
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a jack-side hanging type static load test main beam. The main beam comprises a beam body, wherein the beam body is formed by welding an H-shaped steel beam and a jack counter-force seat, a connecting bolt hole is formed in the beam body, a piston rod telescopic hole is further formed in the beam body, and a support rib is arranged at the upper part of the jack counter-force seat; the hydraulic jack further comprises a jack and a connecting bolt, and a threaded hole matched with the connecting bolt is formed in the bottom of the cylinder body of the hydraulic jack. The loading jack is inversely hung on two sides of the web plate of the beam body, and the loading jack is simple in design and reasonable in structure. Can be equipped with up to four jacks, overcome girder bearing capacity design restriction, the installation and the maintenance of the jack of being convenient for.
Description
Technical Field
The invention belongs to the technical field of foundation pile bearing force static load tests, and particularly relates to a jack-side hanging type static load test main beam.
Background
A jack-embedded static load test main beam (patent number: 2013104504328) adopts a structure that a jack is embedded into a cavity. The structure destroys the continuity of the beam web, the local stress of the beam is complex, and the design and calculation are complex; moreover, the jack embedding cavity can only accommodate one jack, so that the counter force provided by the main beam in the form is limited; in addition, because the jack is embedded into the beam body, the installation and maintenance are not very convenient.
Disclosure of Invention
In order to overcome and avoid the defects of the jack-embedded static load test main beam, the invention provides a jack-side hanging type static load test main beam. The invention suspends the jacks at the two sides of the web plate of the beam body, keeps the continuity of the web plate, has simple design and reasonable structure, can overcome the design limitation of the bearing capacity of the main beam, and is very convenient to install and maintain.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a jack-side hanging type static load test main beam comprises a beam body, wherein a bolt hole for connecting with a jack is formed in the beam body, and a piston rod telescopic hole is formed in the beam body; the invention also comprises a jack and a connecting bolt, wherein the bottom of the jack cylinder body is provided with a screw hole matched with the connecting bolt.
Preferably, the beam body comprises an H-beam and a jack reaction seat. And the lower flange of the H-shaped steel beam is provided with a piston rod telescopic hole. The jack reaction seat is symmetrically arranged in the middle of the beam body and welded with the web plate of the H-shaped steel beam to form a whole. And the jack counter-force seat is provided with a bolt hole.
Preferably, the jacks are four jacks of the same type and are symmetrically arranged on two sides of the middle of the web plate of the H-shaped steel beam.
The invention has the beneficial effects that:
1) the invention integrates the jacks and the beam body into a whole, keeps the continuity of the web plate of the beam body, has simple design, can be provided with up to four jacks and can overcome the design limitation of the counter force of the main beam.
2) The jacks are positioned on two sides of the beam body, so that the mounting and maintenance are convenient.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a cross-sectional view a-a of fig. 1.
Fig. 3 is a sectional view of B-B of fig. 1.
Fig. 4 is a cross-sectional view of C-C of fig. 1.
Fig. 5 is an enlarged sectional view I of fig. 1.
The notations in the figures have the following meanings:
1-H-shaped steel beam 2-jack 3-jack reaction seat 4-support rib 5-connecting bolt 6-piston rod telescopic hole 7-bolt hole 8-screw hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the drawings.
As shown in fig. 1 to 5, the jack-side hanging type static load test main beam comprises a beam body, wherein a bolt hole 7 is formed in the beam body, and a jack piston rod telescopic hole 6 is further formed in the beam body; the reaction beam also comprises a jack 2 and a connecting bolt 5.
As shown in fig. 1-5, the beam body comprises an H-shaped steel beam 1 and a jack reaction seat 3; the lower flange of the H-shaped steel beam 1 is provided with a piston rod telescopic hole 6; the upper part of the jack reaction seat 3 is provided with a support rib 4 which is symmetrically arranged at two sides of a web plate of the H-shaped steel beam 1 and is welded with the web plate and the jack reaction seat 3 to form a whole; the jack counter-force seat 3 is provided with a bolt hole 7.
As shown in fig. 1 to 5, the jacks 2 are four jacks of the same type and inversely suspended on two sides of the beam, a screw hole 8 matched with the connecting bolt 5 is formed in the bottom of each jack cylinder, the connecting bolt 5 passes through a bolt hole 7 on the jack reaction seat 3 and is screwed into the screw hole 8 in the bottom of the jack cylinder, and the jacks and the beam are connected into a whole.
The working engineering of the present invention is further explained below with reference to the accompanying drawings.
During the foundation pile static load test, oil pump is used for supplying hydraulic oil to the jack 2, a piston rod of the jack extends out, penetrates through a lower flange piston rod telescopic hole 6 of the beam body, and starts to lift the beam body after pushing a load plate below the beam body, and the test pile is loaded after the beam body touches an upper load. After the test is finished, oil is reversely supplied to the jack, the piston rod retracts, and the loading is stopped.
Claims (1)
1. The utility model provides a hanging static test girder in jack side which characterized in that: the main beam comprises a beam body, wherein bolt holes for connecting a jack are formed in the beam body, and a piston rod telescopic hole is formed in the beam body; the main beam also comprises a jack, wherein the bottom of a cylinder body of the jack is provided with a screw hole matched with the connecting bolt; the main beam also comprises a connecting bolt;
the jack counter-force seat is a steel plate, the upper part of which is provided with a support rib, is arranged in the middle of the beam body, is parallel to the upper flange and the lower flange, is welded with the web plate of the H-shaped steel beam to form a whole, and is provided with bolt holes at corresponding positions;
the beam body comprises an H-shaped steel beam and a jack reaction seat; and the lower flange of the H-shaped steel beam is provided with a piston rod telescopic hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223370.4A CN111719598B (en) | 2019-03-22 | 2019-03-22 | Jack-side hanging type static load test main beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223370.4A CN111719598B (en) | 2019-03-22 | 2019-03-22 | Jack-side hanging type static load test main beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111719598A CN111719598A (en) | 2020-09-29 |
| CN111719598B true CN111719598B (en) | 2021-09-24 |
Family
ID=72563533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910223370.4A Active CN111719598B (en) | 2019-03-22 | 2019-03-22 | Jack-side hanging type static load test main beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111719598B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323174B (en) * | 1997-03-14 | 2000-08-09 | Kvaerner Cementation Found Ltd | Automatic static load testing for piles |
| GB0525236D0 (en) * | 2005-12-12 | 2006-01-18 | Terrain Geotechnical Consultan | A pile test apparatus |
| CN104514231A (en) * | 2013-09-29 | 2015-04-15 | 武汉倡文科技咨询有限公司 | Jack-embedded type static testing girder |
| CN108316367A (en) * | 2018-03-23 | 2018-07-24 | 湖北万钧工程技术有限责任公司 | Integrated form foundation pile static loading test reaction beam |
-
2019
- 2019-03-22 CN CN201910223370.4A patent/CN111719598B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323174B (en) * | 1997-03-14 | 2000-08-09 | Kvaerner Cementation Found Ltd | Automatic static load testing for piles |
| GB0525236D0 (en) * | 2005-12-12 | 2006-01-18 | Terrain Geotechnical Consultan | A pile test apparatus |
| CN104514231A (en) * | 2013-09-29 | 2015-04-15 | 武汉倡文科技咨询有限公司 | Jack-embedded type static testing girder |
| CN108316367A (en) * | 2018-03-23 | 2018-07-24 | 湖北万钧工程技术有限责任公司 | Integrated form foundation pile static loading test reaction beam |
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| Publication number | Publication date |
|---|---|
| CN111719598A (en) | 2020-09-29 |
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