CN208105340U - A kind of high-precision foundation pile test for static load structure - Google Patents

Abstract

The utility model discloses a kind of high-precision foundation pile test for static load structures, including bottom plate, jack is set on bottom plate, test device is set on jack, loading plate is connected in the test device, it is heap loading on the loading plate, it further include the datum line beam parallel with the bottom plate, the datum line beam is erected above bottom plate, vibrating sensor is installed on the datum line beam, mounted angle sensor in the heap loading, further includes processor, and the input terminal of the processor is connected with the test device, vibrating sensor, obliquity sensor simultaneously.The purpose of this utility model is to provide a kind of high-precision foundation pile test for static load structures, and the precision to solve the problems, such as foundation pile static loading test in the prior art is limited, realize the purpose for reducing error interference, improving test accuracy.

Description

A kind of high-precision foundation pile test for static load structure

Technical field

The utility model relates to test for static load fields, and in particular to a kind of high-precision foundation pile test for static load structure.

Background technique

Foundation pile static loading test is in engineering to a technology of pile bearing capacity detection.Determining that the single pile limit holds In terms of carrying power, it is presently the most accurate, the reliable method of inspection, as determining whether certain dynamic load method of inspection is mature, Using the comparison error size of Static Load Test Results as foundation.Therefore, every kind of Base foundation design processing specification is all single pile static load Test is included in top priority.The basic principle is that using one group of complete single pile vertical resistance pressure static load test Q-s curve as base Plinth takes sedimentation initial data under what preceding load of the curve to be analyzed, and then makes to the development trend of Q-s curve pre- It surveys.In test method, what China's most inspection criterion (regulation) all formulated is " maintained load test (ML-test) at a slow speed ", the specific practice It is that load classification is added in stake by certain requirement, before not up to a certain defined opposite stability criterion is sunk in stake, this grade of lotus Load remains unchanged；When reaching stability criterion, continue to add next stage load；It terminates and adds when reaching defined termination test condition It carries；Then in load shedding to zero.Test period is generally 3~7 days.《Code for design of building》(GBJ7-89) and 《Technical code for building pile foundation》(JGJ94-94) pile testing method is both provided.But related test pile bury after interval time, point Grade standard is surveyed and reads the projects such as deflection interval time, test termination condition and unloading regulation, and the regulation of each codes and standards is not It is identical to the greatest extent.

Although various codes and standards difference in static test requires setting benchmark during the test Beam has higher requirement to the setting of datum line beam as reference system, therefore in engineering, such as constructively not by temperature weather Influence.However since datum line beam and heap loading are directly exposed in external environment, construction party not can guarantee their own Suffered external interference is discharged completely, is all to interfere these as from the point of view of normal test error in the prior art To not pay close attention to them, it is limited which results in the precision of foundation pile static loading test.

Utility model content

The purpose of this utility model is to provide a kind of high-precision foundation pile test for static load structures, to solve in the prior art The limited problem of the precision of foundation pile static loading test realizes the purpose for reducing error interference, improving test accuracy.

The utility model is achieved through the following technical solutions：

Jack is arranged on bottom plate, is arranged on jack and surveys for a kind of high-precision foundation pile test for static load structure, including bottom plate Trial assembly is set, and loading plate is connected in the test device, is heap loading on the loading plate, further includes the base parallel with the bottom plate Quasi- beam, the datum line beam are erected above bottom plate, install vibrating sensor, mounted angle in the heap loading on the datum line beam Sensor further includes processor, and the input terminal of the processor is sensed with the test device, vibrating sensor, inclination angle simultaneously Device is connected.

For the limited problem of the precision of foundation pile static loading test in the prior art, the utility model proposes a kind of high-precision Foundation pile test for static load structure, this structure are arranged jack for jacking up preloading on bottom plate, test device, base are arranged on jack The test device of stake static load already belongs to the prior art it is not limited here.Loading plate is connected in test device, for being preloading Object, which provides, to be stacked station and transmits load downwards.Datum line beam is erected above bottom plate, and datum line beam is parallel with bottom plate.This is practical new Type also installs shock sensor on datum line beam.In the prior art as the datum line beam of object of reference, its own is under external interference Stability be ignored always, and vibration is passed through by the vibrated situation of vibrating sensor monitoring criteria beam in the utility model Whether sensor can detect amplitude variations trend of the datum line beam under vibrated for a long time, to judge datum line beam by the external world Whether vibration interference, stability gradually decrease, and provide the judgement basis of more codes and standards as foundation pile static loading test.This knot Structure mounted angle sensor also in heap loading, for monitoring the level inclination of heap loading, when interference issues on outer boundary for heap loading When raw inclination, the distribution of static load load will certainly be impacted, this measuring accuracy for influencing to interfere with test device, and led to The monitoring of obliquity sensor is crossed, heap loading run-off the straight can quickly be monitored to, can calculate by tilt angle Ballast amount on vertical direction so that staff can accurately grasp current longitudinal ballast situation, and carries out in time Adjustment amendment.Vibrating sensor in this structure, obliquity sensor monitoring data be transmitted to processor, handled and converged by processor The General Logistics Department is sent out to staff, provides more accurate reference datas for staff, ties convenient for staff to test Fruit is modified and compensates, to solve the problems, such as that the precision of foundation pile static loading test in the prior art is limited, realizes reduction Error interference, the purpose for improving test accuracy.

Preferably, for the base plate paving in foundation pit, the datum line beam is erected at the open end of foundation pit.This programme is tested Special foundation pit is arranged in station, facilitates ensuring that the horizontal positioned of bottom plate, improves the stability of total, while on the basis of being convenient for Beam provides sufficient erection space, provides enough available spaces for the installation of vibrating sensor, so as to improve the utility model The scope of application.

Preferably, the datum line beam has two, and two datum line beams are in identical height level, is respectively mounted on every datum line beam One vibrating sensor.

Preferably, the heap loading is several weight bodies, and several weight bodies tower on loading plate is scattered in multilayer, every layer At least one obliquity sensor is both provided in weight body.Being that weight body is tower-like on loading plate is scattered in multilayer, by right Every layer of weight body setting obliquity sensor successively judges whether to tilt to improve monitoring accuracy, so that staff couple The amendment of load is more accurate reliable.

Preferably, the vibrating sensor includes back box, upper cover, and the back box is identical and facing each other with upper cover shape, It is detachably connected between back box and upper cover, upper cover bottom surface is provided with the flange inwardly stretched out, each turning of the back box bottom surface Place is respectively provided with connecting hole, and screw rod is inserted into the connecting hole, and the screw rod passes through the flange；The side of the back box, upper cover It is respectively provided with mounting hole, connecting column is inserted into the mounting hole, the connecting column is located at one end and the sensor sheet of enclosure interior Body is connected；The sensor body is fixed in back box, has gap between sensor body and flange.Sensor in this programme Ontology is arranged in shell, and wherein shell includes back box and upper cover two parts, and back box is identical and facing each other with upper cover shape, To ensure the globality of the utility model, flange is arranged in upper cover bottom surface, and flange is stretched out towards enclosure interior direction, so that entire shell Body externally gets on not extra protrusion part.The flange for realizing the connection between back box and upper cover, specifically, The first connecting hole is arranged in each corner in back box bottom surface, and the first screw rod is inserted into the first connecting hole, so that the first spiral shell Bar passes through flange, and the connection between back box and upper cover can be realized by the first screw rod.The side of back box and upper cover is respectively provided with peace Hole is filled, is attached for being inserted into connecting column with sensor body, sensor body is limited and fixed from side with this, The stability in use of sensor body is improved, while the connective stability between back box and upper cover can also be improved.Sensor sheet Body is fixed in back box, has gap between sensor body and flange, so that sensor body does not connect directly with upper cover Touching will not be due to even if slight relative displacement occurs between back box and upper cover since external force vibration acts in the case The shaking of upper cover brings interference to sensor body, ensures that the sensing accuracy of sensor body, while realizing vibration again The dynamic sensor effect easy to disassemble overhauled or replaced.

The utility model compared with prior art, has the following advantages and benefits：

1, a kind of high-precision foundation pile test for static load structure of the utility model, by vibrating sensor monitoring criteria beam by Vibration situation can detect amplitude variations trend of the datum line beam under vibrated for a long time by vibrating sensor, to judge base Whether quasi- beam is interfered by extraneous vibration, and whether stability gradually decreases, and provides more specification as foundation pile static loading test and marks Quasi- judgement basis.

2, a kind of high-precision foundation pile test for static load structure of the utility model, the mounted angle sensor in heap loading are used It will certainly be to the distribution of static load load when heap loading run-off the straight under the interference of outer boundary in the level inclination of monitoring heap loading It impacts, this measuring accuracy for influencing to interfere with test device, and by the monitoring of obliquity sensor, heap loading is inclined It tiltedly can quickly be monitored to, ballast amount in the vertical direction can be calculated by tilt angle, so that work Personnel can accurately grasp current longitudinal ballast situation, and be adjusted amendment in time.

Detailed description of the invention

Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings：

Fig. 1 is the structural schematic diagram of the utility model specific embodiment；

Fig. 2 is the structural schematic diagram of vibrating sensor in the utility model specific embodiment.

Label and corresponding parts title in attached drawing：

1- bottom plate, 2- jack, 3- test device, 4- loading plate, 5- heap loading, 6- datum line beam, 7- vibrating sensor, 71- sensor body, 72- back box, 73- upper cover, 74- flange, 75- screw rod, 76- connecting column, 8- obliquity sensor, 9- foundation pit.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing, The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this Utility model is not intended to limit the scope of the present invention.

Embodiment 1：

A kind of high-precision foundation pile test for static load structure as shown in Figure 1, a kind of high-precision foundation pile test for static load structure, Including bottom plate 1, jack 2 is set on bottom plate 1, test device 3 is set on jack 2, connects loading plate in the test device 3 4, it is heap loading 5 on the loading plate 4, further includes the datum line beam 6 parallel with the bottom plate 1, the datum line beam 6 is erected at bottom plate Above 1, vibrating sensor 7 is installed on the datum line beam 6, mounted angle sensor 8 in the heap loading 5, further includes processor, The input terminal of the processor is connected with the test device 3, vibrating sensor 7, obliquity sensor 8 simultaneously.

Embodiment 2：

A kind of high-precision foundation pile test for static load structure as shown in Figures 1 and 2, on the basis of embodiment 1, the bottom Plate 1 is laid in foundation pit 9, and the datum line beam 6 is erected at the open end of foundation pit 9.The datum line beam 6 has two, two datum line beams 6 In identical height level, a vibrating sensor 7 is respectively mounted on every datum line beam 6.The heap loading 5 is several weight bodies, Several weight bodies tower on loading plate 4 is scattered in multilayer, at least one obliquity sensor 8 is both provided in every layer of weight body. The vibrating sensor 7 includes back box 72, upper cover 73, and the back box 72 and 73 shape of upper cover are identical and facing each other, back box 72 It is detachably connected between upper cover 73,73 bottom surface of upper cover is provided with each of the flange 74 inwardly stretched out, 72 bottom surface of back box Corner is respectively provided with connecting hole, and screw rod 75 is inserted into the connecting hole, and the screw rod 75 passes through the flange 74；The back box 72, the side of upper cover 73 is respectively provided with mounting hole, and connecting column 76 is inserted into the mounting hole, and the connecting column 76 is located in shell The one end in portion is connected with sensor body 71；The sensor body 71 is fixed in back box 2, sensor body 71 and flange 74 Between have gap.

Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced It changes, improve, should be included within the scope of protection of this utility model.

Claims (5)

1. a kind of high-precision foundation pile test for static load structure, including bottom plate (1), jack (2) are set on bottom plate (1), jack (2) test device (3) are set on, which is characterized in that connect loading plate (4) on the test device (3), the loading plate (4) Upper is heap loading (5), further includes the datum line beam parallel with the bottom plate (1) (6), the datum line beam (6) is erected on bottom plate (1) It is square, vibrating sensor (7) are installed on the datum line beam (6), mounted angle sensor (8) on the heap loading (5) further includes place Device is managed, the input terminal of the processor is connected with the test device (3), vibrating sensor (7), obliquity sensor (8) simultaneously.

2. a kind of high-precision foundation pile test for static load structure according to claim 1, which is characterized in that the bottom plate (1) It is laid in foundation pit (9), the datum line beam (6) is erected at the open end of foundation pit (9).

3. a kind of high-precision foundation pile test for static load structure according to claim 1, which is characterized in that the datum line beam (6) there are two, two datum line beams (6) are in identical height level, are respectively mounted a vibrating sensor on every datum line beam (6) (7)。

4. a kind of high-precision foundation pile test for static load structure according to claim 1, which is characterized in that the heap loading (5) be several weight bodies, several weight bodies tower on loading plate (4) is scattered in multilayer, be both provided in every layer of weight body to A few obliquity sensor (8).

5. a kind of high-precision foundation pile test for static load structure according to claim 1, which is characterized in that the vibrating sensing Device (7) includes back box (72), upper cover (73), and the back box (72) is identical and facing each other with upper cover (73) shape, back box (72) It is detachably connected between upper cover (73), upper cover (73) bottom surface is provided with the flange (74) inwardly stretched out, back box (72) bottom Each corner in face is respectively provided with connecting hole, is inserted into screw rod (75) in the connecting hole, the screw rod (75) passes through the flange (74)；The back box (72), upper cover (73) side be respectively provided with mounting hole, connecting column (76), institute are inserted into the mounting hole It states connecting column (76) and is located at one end of enclosure interior and be connected with sensor body (71)；The sensor body (71) is fixed on bottom On box (72), there is gap between sensor body (71) and flange (74).