CN203420292U

CN203420292U - Direct-reading type pile foundation displacement detection device

Info

Publication number: CN203420292U
Application number: CN201320517812.4U
Authority: CN
Inventors: 万凌志; 钱崑; 易教良
Original assignee: Nanchang Yongqi Technology Development Co Ltd
Current assignee: Nanchang Yongqi Technology Development Co Ltd
Priority date: 2013-08-23
Filing date: 2013-08-23
Publication date: 2014-02-05
Anticipated expiration: 2023-08-23

Abstract

The utility model discloses a direct-reading type pile foundation displacement detection device. The direct-reading type pile foundation displacement detection device comprises a pile body which is divided into an upper pile main body and a lower pile main body, and further comprises a load detection device located in the lower pile main body and a displacement sensor arranged in the pile body. The displacement sensor is connected with the load detection device, an output wire of the displacement sensor is connected with a load tester located on the ground surface, and the load tester is connected with a loading system through a control wire. The direct-reading type pile foundation displacement detection device can test the actual displacement of a foundation file, and the measurement error is greatly reduced.

Description

Direct-reading pile foundation displacement checkout gear

Technical field

The utility model relates to the detection system of testing foundation pile carrying displacement in a kind of building foundation pile driving construction of using in architectural engineering construction technique field, specifically, relates to a kind of direct-reading pile foundation displacement checkout gear.

Background technology

Pile bearing capacity displacement detector structure of the prior art as shown in Figure 1, the pile body 9 of foundation pile is divided into pile body 10 and lower pile body 11, the inside of lower pile body 11 is provided with Weight detector 12, upper at Weight detector 12, lower shoe 13, on 14, weld, bottom offset bar, in figure, 1 is top offset bar, 2 is bottom offset bar, wherein, on, bottom offset bar 1, 2 outer cover are equipped with protecting pipe and straight-through earth's surface, and a datum line beam 3 is installed on earth's surface, on, bottom offset sensor 4, 5 base is fixed on datum line beam 3, on, bottom offset sensor 4, 5 contact and upper, bottom offset bar 1, 2 upper surface connects, the output line of two displacement transducers is connected with M signal conversion equipment 6, and then be connected on static load detection analyzer 7, static load detects analyzer 7 and loads step by step through control year case 8 controlled loading systems 19.But in this scheme, static load detects the value-added tax function step by step that analyzer 7 can only controlled loading system, can not realize offloading functions step by step; And upper and lower displacement bar 1,2 is longer, because deadweight easily produces bending, affect displacement measurement precision and authenticity; And site environment is severe, in installation process and after installing, displacement bar easily hits curved, and the measuring accuracy that greatly affects foundation pile carrying displacement even can not be measured displacement.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, adapts to reality needs, and a kind of direct-reading pile foundation displacement checkout gear is provided.

In order to realize the purpose of this utility model, the technical solution adopted in the utility model is:

A kind of direct-reading pile foundation displacement checkout gear, comprise pile body, described pile body is divided into pile body and lower pile body, also comprise the Weight detector that is positioned at lower pile body inside, also comprise the displacement transducer that is arranged at pile body inside, described displacement transducer is connected with Weight detector, and the output lead of described displacement transducer is connected with the load test instrument that is positioned at earth's surface, and described load test instrument is connected with loading system through pilot.

Described displacement transducer comprises top offset sensor and bottom offset sensor, and described top offset sensor is connected with the upper plate of described Weight detector, and described bottom offset sensor is connected with the lower shoe of Weight detector.

The beneficial effects of the utility model are:

1. displacement transducer is arranged at pile body inside and is directly connected with the upper and lower base plate of Weight detector, can test the real displacement of foundation pile, and measure error reduces greatly;

2. do not need displacement bar and displacement sheath are installed, easy for installation, cost is low;

3. the small volume of displacement transducer, is directly installed on the upper and lower base plate of Weight detector, is not easy to damage between detecting;

4. the output line of displacement transducer is directly connected on load test instrument, and the data that record are more accurate;

5. load test instrument both can Artificial Control, the directly loading step by step of controlled loading system, unloading, ftercompction process again, realize full-automatic, unattended function.

Accompanying drawing explanation

Fig. 1 is the structural representation of prior art pile foundation bearing capacity displacement detector;

Fig. 2 is structural representation of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated:

Embodiment: referring to Fig. 2.

A kind of direct-reading pile foundation displacement checkout gear, comprise pile body 9, described pile body is divided into pile body 10 and lower pile body 11, also comprise the Weight detector 12 that is positioned at lower pile body 11 inside, also comprise the displacement transducer that is arranged at pile body inside, described displacement transducer is connected with Weight detector 12, and the output lead of described displacement transducer is connected with the load test instrument 18 that is positioned at earth's surface, and described load test instrument 18 is connected with loading system 19 through pilot.

Described displacement transducer comprises top offset sensor 16 and bottom offset sensor 17, and described top offset sensor 16 is connected with the upper plate 13 of described Weight detector 12, and described bottom offset sensor 17 is connected with the lower shoe 14 of Weight detector 12.

Top offset sensor 16, for measuring the displacement of Weight detector 12 upper plates 13, is namely gone up the displacement of pile body 10 after foundation pile bearing load; Bottom offset sensor 17 is for measuring the displacement of Weight detector 12 lower shoes 14, and namely whether the displacement of lower pile body 11 after foundation pile bearing load, come judgement basis pile capacity qualified according to the displacement of foundation pile; Load test instrument 18 is for the loading step by step of controlled loading system 19 and unloading, ftercompction process step by step, and post processing of data, field print etc.

Displacement transducer is arranged at pile body inside and is directly connected with the upper and lower base plate of Weight detector, can test the real displacement of foundation pile, and measure error reduces greatly;

Compare with the displacement bar structure of prior art, do not need to install displacement bar and displacement sheath, easy for installation, cost is low;

The small volume of displacement transducer, is directly installed on the upper and lower base plate of Weight detector, is not easy to damage between detecting;

The output line of displacement transducer is directly connected on load test instrument 18, and the data that record are more accurate;

Load test instrument both can Artificial Control, the directly loading step by step of controlled loading system, unloading, ftercompction process again, realize full-automatic, unattended function.

What embodiment of the present utility model announced is preferred embodiment; but be not limited to this; those of ordinary skill in the art; very easily according to above-described embodiment; understand spirit of the present utility model; and make different amplifications and variation, but only otherwise depart from spirit of the present utility model, all in protection domain of the present utility model.

Claims

1. a direct-reading pile foundation displacement checkout gear, comprise pile body, described pile body is divided into pile body and lower pile body, also comprise the Weight detector that is positioned at lower pile body inside, it is characterized in that: also comprise the displacement transducer that is arranged at pile body inside, described displacement transducer is connected with Weight detector, and the output lead of described displacement transducer is connected with the load test instrument that is positioned at earth's surface, and described load test instrument is connected with loading system through pilot.

2. direct-reading pile foundation displacement checkout gear according to claim 1, it is characterized in that: described displacement transducer comprises top offset sensor and bottom offset sensor, described top offset sensor is connected with the upper plate of described Weight detector, and described bottom offset sensor is connected with the lower shoe of Weight detector.