CN219572950U - Measuring device for dynamic compaction displacement foundation compaction settlement - Google Patents

Abstract

The utility model provides a measuring device for the tamping settlement of a dynamic compaction replacement foundation, which comprises a laser level instrument and an optical sensing device, wherein the laser level instrument is arranged on a rammer, the optical sensing device is arranged at a safe distance from a tamping point, the laser level instrument is used for emitting laser to the optical sensing device, and the optical sensing device is used for recording the position information of the received laser. The optical sensing device comprises an optical sensing plate, a sensor and a data processing terminal which are sequentially connected. The measuring device does not need measuring personnel to stand near the dynamic compactor and the compaction pit, effectively avoids the danger caused by falling hooks of the dynamic compactor and collapse of the compaction pit, and greatly improves the safety. The measuring device can greatly improve the measuring precision of the ramming settlement, the measuring speed of the ramming settlement and the construction efficiency.

Description

Measuring device for dynamic compaction displacement foundation compaction settlement

Technical Field

The utility model relates to the technical field of civil engineering dynamic compaction construction, in particular to a measuring device for the dynamic compaction displacement foundation compaction settlement.

Background

The dynamic compactor is an important compacting machine in engineering machinery, and the working process of the dynamic compactor is to repeatedly hoist a 10-60 ton heavy hammer to a height of 6-30 meters to enable the heavy hammer to freely fall, so that huge potential energy forms strong impact force to perform powerful compaction on soil.

The dynamic compaction replacement method is improved by the dynamic compaction method, and is an economical and rapid foundation treatment mode. The concrete implementation process is that the broken stone is backfilled in the ramming pit, the granular aggregate (broken stone, etc.) is extruded into the compressible soft soil by using the ramming energy of the falling heavy hammer, the block stone is rammed through the reinforced soil layer by using huge ramming energy, the block stone is sunk to form a pile body, and the composite foundation consisting of the broken stone pile, the soil between piles and the broken stone cushion layer is finally formed through the process flow of 'filling-ramming for several times-refilling'. The method has the advantages of simple construction process operation, small deformation settlement, obvious reinforcement effect, high work efficiency, high construction speed, low equipment investment cost and the like.

In the construction process of the dynamic compaction displacement method, a plurality of construction control parameters exist, and the number of times of compaction is specified in the current technical Specification for treating building foundation (JGJ 79-2012) as follows: (1) The method comprises the steps of determining a relation curve of the tamping times and the tamping settlement of the site tamping; (2) The average ramming settlement of the last two strokes should meet the standard requirement; (3) excessive uplift should not occur around the tamper pit; (4) the problem of difficulty in lifting the hammer due to too deep tamping pit is avoided. The compaction settlement is a control standard and an acceptance standard of foundation reinforcement quality in dynamic compaction construction.

When the current field dynamic compaction displacement method is constructed, a leveling instrument is generally adopted to measure the compaction and settlement amount, the measurement mode is influenced by the field geological condition and the construction level, and the actual measurement process is influenced by weather, time, tower ruler position, human factors and the like, so that the accurate foundation compaction and settlement amount is difficult to obtain in time; the leveling method has the advantages of long time, large labor consumption, heavy and expensive instrument equipment, low safety and easiness in influencing the subsequent construction process.

In view of the above, there is a strong need for a device for measuring the amount of ramming in a dynamic compaction replacement foundation to solve the problems in the prior art.

Disclosure of Invention

The utility model aims to provide a measuring device for the tamping settlement of a dynamic compaction replacement foundation, which can accurately measure the tamping settlement in real time, and the specific technical scheme is as follows:

the utility model provides a measuring device of dynamic compaction displacement foundation tamper volume, includes laser level instrument and optical sensing device, the laser level instrument sets up on the ram, sets up optical sensing device in the safe distance department from the ramming point, the laser level instrument is used for transmitting laser to optical sensing device, optical sensing device is used for the positional information of the received laser of record.

In the above technical scheme, the optical sensing device comprises an optical sensing plate, a sensor and a data processing terminal which are sequentially connected, the laser level meter emits laser to the optical sensing plate, the sensor is used for receiving laser signals and converting the laser signals, the converted laser signals are transmitted to the data processing terminal, and the data processing terminal is used for outputting the position information of the received laser.

In the above technical solution, preferably, the laser level device horizontally emits laser, and the laser is perpendicular to the optical sensing plate.

In the above technical scheme, preferably, the laser level is arranged on the rammer through the supporting plate.

In the above technical solution, preferably, the laser level is disposed at an upper portion of a peripheral side surface of the ram.

In the above technical scheme, the safety distance is preferably more than 5m from the tamping point.

The technical scheme of the utility model has the following beneficial effects:

according to the utility model, the laser level instrument fixed on the rammer emits horizontal laser to the optical induction plate, and the corresponding sensor and the data processing terminal are used for receiving, transmitting and processing signals, so that the data processing terminal can display the single ramming amount, the accumulated ramming amount and the results of the average ramming amount of two adjacent times in real time, and the ramming amount of the dynamic compaction replacement foundation can be accurately measured in real time, thereby providing effective guidance for construction of the dynamic compaction replacement method.

The measuring device can complete real-time measurement and recording by only 2-3 persons, and the required manpower and material resources are less than those of the level gauge; according to the measuring method, as the tamping is carried out, the tamping settlement information is displayed in real time through the data processing terminal, so that the time for manual measurement and the time for a measurer to make a round trip to tamper a pit are saved, and the measuring efficiency is greatly improved; the measuring device does not need measuring personnel to stand near the dynamic compactor and the compaction pit, effectively avoids the danger caused by falling hooks of the dynamic compactor and collapse of the compaction pit, and greatly improves the safety. The measuring device can greatly improve the measuring precision of the ramming settlement, the measuring speed of the ramming settlement and the construction efficiency.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the construction of a measuring device;

the dynamic compaction device comprises a dynamic compaction machine 1, a dynamic compaction machine 2, a rammer 3, a rammed area 4, an unbilled area 5, a supporting plate 6, a laser level meter 7, an optical induction plate 8, a sensor 9, a data line 10, a data processing terminal 11 and a dynamic compaction replacement pier.

Detailed Description

The present utility model will be described more fully hereinafter in order to facilitate an understanding of the present utility model, and preferred embodiments of the present utility model are set forth. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1:

referring to fig. 1, a measuring device for the dynamic compaction displacement foundation compaction settlement comprises a laser level meter 6 and an optical sensing device, wherein the laser level meter 6 is arranged on a rammer 2, the optical sensing device is arranged at a safe distance from a compaction point, the laser level meter 6 is used for emitting laser to be projected onto the optical sensing device, and the optical sensing device is used for recording the position information of the received laser.

Preferably, the optical sensing device comprises an optical sensing board 7, a sensor 8 and a data processing terminal 10 which are sequentially connected by adopting a data line 9, the laser level meter 6 emits laser to the optical sensing board 7, the sensor 8 is used for receiving laser signals and converting the laser signals, the converted laser signals are transmitted to the data processing terminal 10, and the data processing terminal 10 is used for outputting the position information of the received laser.

Preferably, the laser level 6 is arranged on the ram 2 via a support plate 5. The supporting plate 5 is arranged on the rammer 2 in a welding mode, the laser level instrument 6 is arranged on the supporting plate 5 through bolts, and the laser level instrument 6 and the supporting plate 5 move along with the rammer; the dynamic compactor 1 controls the ram to freely fall to realize the compaction of the dynamic compaction replacement pier 11 below the ram, and laser emitted by the laser level meter is projected onto the optical sensing plate 7 in the falling process, so that a track line can be formed to indicate the movement process of the ram and the stop position of the ram.

Further, the laser level 6 is arranged on the upper portion of the peripheral side face of the rammer 2, and the laser level is arranged at a higher position to ensure that laser energy emitted by the laser level is received by the optical sensing plate, and also can prevent the problem that emitted laser is blocked by the rammer pit after the rammer enters the rammer pit.

Further, the support plate should be horizontally disposed to ensure that the laser light emitted from the laser level is horizontal.

The ground surface is flattened within the installation range of the optical sensing plate 7, so that the ground surface is flattened, the embedding depth of the optical sensing plate 7 is properly deepened, the optical sensing plate 7 is prevented from being greatly displaced due to ramming, the horizontal laser line is ensured to be vertical to the optical sensing plate 7, and the measurement system error is reduced. Further, the optical sensing plate 7 should be installed at a position to ensure that the laser light projected by the laser level meter is received.

Preferably, the distance between the optical sensing device and the tamping point is more than 5m, and the optical sensing device (mainly referred to as an optical sensing plate) is arranged on the safe distance, so that the optical sensing plate can be prevented from moving due to tamping, and measurement errors are caused.

Preferably, the data processing terminal is a computer, and the computer is provided with data real-time processing software and data real-time display software, the computer processing software analyzes and processes the signals (namely, converted laser signals) transmitted by the sensor 8, and the results of single tamper-sinking amount, accumulated tamper-sinking amount and average tamper-sinking amount of two adjacent times are displayed on the display software in real time.

Furthermore, the sensor, the data real-time processing software and the data real-time display software are all in the prior art, and can directly adopt the existing finished products, and in this embodiment, the working principles and the data processing flow of the sensor, the data real-time processing software and the data real-time display software are not described in detail. Specifically, the sensor can be an infrared laser sensor, the data real-time processing software can be an AutoQuant three-dimensional deconvolution software, the data real-time display software can be an AutoQuant three-dimensional deconvolution software, and the optical sensing plate 7 can be a 3M photoelectric switch reflection paper diamond-grade reflection patch optical sensing plate.

When the measuring device of this embodiment is used, the position condition and damage condition of the laser level 6 after ramming and the position condition of the optical sensing plate 7 should be detected in real time, and the working conditions of the optical sensing plate 7, the sensor 8 and the data processing terminal should also be detected.

Preferably, the laser level may be a small building level.

The technical scheme of the embodiment is specifically as follows:

the dynamic compactor is stopped at the compacted area 3, and the non-compacted area 4 is compacted by a rammer;

before starting the tamping, the tamping hammer is parked at the tamping point (i.e. on the dynamic tamping displacement pier), the laser level meter projects laser towards the optical sensing plate 7, and initial data (i.e. the position where the tamping settlement is 0) before the tamping is recorded;

the dynamic compactor lifts the rammer to tamp, the optical sensing plate records the position information of each tamping projection, and the data processing terminal displays the results of single tamping settlement, accumulated tamping settlement and average tamping settlement of two adjacent times;

and repeating the tamping until the tamping settlement meets the standard requirement, and stopping the tamping.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The measuring device for the dynamic compaction displacement foundation compaction settlement is characterized by comprising a laser level meter (6) and an optical sensing device, wherein the laser level meter (6) is arranged on a rammer (2), the optical sensing device is arranged at a safe distance from a compaction point, the laser level meter (6) is used for emitting laser to the optical sensing device, and the optical sensing device is used for recording the position information of the received laser.

2. The measuring device for the dynamic compaction displacement foundation compaction settlement amount according to claim 1, wherein the optical sensing device comprises an optical sensing plate (7), a sensor (8) and a data processing terminal (10) which are sequentially connected, the laser level meter (6) emits laser light to the optical sensing plate (7), the sensor (8) is used for receiving laser signals and converting the laser signals, the converted laser signals are transmitted to the data processing terminal (10), and the data processing terminal (10) is used for outputting the position information of the received laser light.

3. The measuring device for the dynamic compaction displacement foundation compaction settlement amount according to claim 2, wherein the laser level meter (6) horizontally emits laser light, and the laser light is perpendicular to the optical sensing plate (7).

4. The measuring device for the dynamic compaction displacement foundation compaction settlement according to claim 1, wherein the laser level meter (6) is arranged on the rammer (2) through a supporting plate (5).

5. The measuring device for the dynamic compaction displacement foundation compaction settlement amount according to claim 1, wherein the laser level meter (6) is arranged at the upper part of the peripheral side surface of the rammer (2).

6. The measuring device for the dynamic compaction displacement foundation compaction settlement amount according to claim 1, wherein the distance from the compaction point is more than 5 m.