CN108444783B - Model test soil filling device and method for slide type large underground test platform - Google Patents

Model test soil filling device and method for slide type large underground test platform Download PDF

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CN108444783B
CN108444783B CN201810197389.1A CN201810197389A CN108444783B CN 108444783 B CN108444783 B CN 108444783B CN 201810197389 A CN201810197389 A CN 201810197389A CN 108444783 B CN108444783 B CN 108444783B
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杜修力
宋伟涛
李鹏飞
龚秋明
路德春
李政
王秋生
林庆涛
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Beijing University of Technology
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Abstract

本发明公开了一种滑梯式大型地下试验平台的模型试验填土装置和方法,属于模型试验填土领域。该装置包括台秤、小推车、休息平台、滑梯装置、竖向钢板、合页、螺栓、竖向挡板、模型箱、竖向支撑杆、钢板槽和防冲击套筒。其中,滑梯装置由漏斗状滑梯、首部滑梯、中部滑梯、尾部滑梯和可更换曲率出口组成。漏斗状滑梯的主体部分与竖向钢板之间由活动的合页连接,竖向钢板能够自由旋转。竖向挡板支撑在模型箱的一侧箱壁上,竖向挡板起着防止滑梯装置下滑的作用。本发明可以快速组装,试验填土结束后,拆卸简单,填筑速度快,省时省力。根据试验平台和模型箱顶部的实际空间位置关系,可以分段架设直线型滑梯或曲线型滑梯,具有很大的灵活性。

Figure 201810197389

The invention discloses a model test filling device and method for a slide-type large-scale underground test platform, and belongs to the field of model test filling. The device includes a platform scale, a trolley, a rest platform, a slide device, a vertical steel plate, hinges, bolts, a vertical baffle, a model box, a vertical support rod, a steel plate slot and an anti-shock sleeve. Among them, the slide device consists of a funnel-shaped slide, a head slide, a middle slide, a tail slide and a replaceable curvature outlet. The main part of the funnel-shaped slide and the vertical steel plate are connected by movable hinges, and the vertical steel plate can rotate freely. The vertical baffle is supported on one side wall of the model box, and the vertical baffle plays the role of preventing the slide device from sliding down. The invention can be assembled quickly, and after the test filling is completed, the disassembly is simple, the filling speed is fast, and time and labor are saved. According to the actual spatial position relationship between the test platform and the top of the model box, linear slides or curved slides can be erected in sections, with great flexibility.

Figure 201810197389

Description

一种滑梯式大型地下试验平台的模型试验填土装置和方法A model test filling device and method for a slide-type large-scale underground test platform

技术领域technical field

本发明属于模型试验填土领域,特别是一种滑梯式大型地下试验平台的模型试验填土装置和方法。The invention belongs to the field of model test filling, in particular to a model test filling device and method for a slide-type large-scale underground test platform.

背景技术Background technique

近些年,随着地上结构研究的日趋完善,越来越多的科研院所将研究的重心逐渐转移到岩土工程领域。岩土工程问题的研究方法,有理论研究、模型试验和数值模拟等。In recent years, with the improvement of above-ground structure research, more and more scientific research institutes have gradually shifted their research focus to the field of geotechnical engineering. The research methods of geotechnical engineering problems include theoretical research, model test and numerical simulation.

模型试验被广泛应用于隧道、基坑等岩土工程领域,究其原因,模型试验比较直观,可定性或定量地反映与地下工程有关的天然岩体受力特性,与其相联系地下工程结构的相互影响,可与数学模型相互验证;物理模拟可以比较全面地、真实地模拟复杂地下工程结构、复杂地层条件等。另外,模型试验可以探索许多目前用数学、力学方法尚不易解决的问题,为建立新的理论和数学模型提供依据。随着地下工程规模越来越大,出现的问题越来越复杂,需要研究的内容越来越多,于是,对地下工程的科研设计水平的要求也越来越高。对复杂地质条件下地下工程开展模型试验进行模拟,是当今岩土工程问题研究的方向,具有实际的工程意义。Model tests are widely used in geotechnical engineering fields such as tunnels and foundation pits. The reason is that model tests are relatively intuitive, and can qualitatively or quantitatively reflect the mechanical properties of natural rock mass related to underground engineering. Mutual influence can be mutually verified with mathematical models; physical simulation can simulate complex underground engineering structures and complex formation conditions more comprehensively and realistically. In addition, model tests can explore many problems that are not easy to solve by mathematical and mechanical methods at present, and provide a basis for establishing new theories and mathematical models. As the scale of underground engineering becomes larger and larger, the problems that arise become more and more complex, and more and more contents need to be studied. Therefore, the requirements for the level of scientific research and design of underground engineering are also getting higher and higher. Simulating the model test of underground engineering under complex geological conditions is the current research direction of geotechnical engineering and has practical engineering significance.

模型试验的缺点在于模型装置的尺寸远小于工程结构和地层的尺寸。因此,模型试验不能满足所有的相似比,存在尺寸效应。目前的解决方法,一个是进行离心机试验;另一个是增大模型装置的尺寸。模型试验的尺寸越大,结果越接近实际工程,尺寸效应就越小。为尽可能地降低尺寸效应,尽可能准确的模拟实际工程中的地层条件和结构,许多科研机构采取增大模型箱尺寸的办法。The disadvantage of model testing is that the size of the model device is much smaller than the size of the engineering structure and formation. Therefore, the model test cannot satisfy all similarity ratios, and there is a size effect. The current solution, one is to run a centrifuge test; the other is to increase the size of the model device. The larger the size of the model test, the closer the results are to actual engineering, and the smaller the size effect. In order to reduce the size effect as much as possible and simulate the stratigraphic conditions and structures in the actual project as accurately as possible, many scientific research institutions have adopted the method of increasing the size of the model box.

然而,模型试验需要面对一个最基本的问题是往模型箱内填土。例如,北京工业大学地下综合试验平台,最大能做6m×6m×10m的模型试验。如何能够快速、安全地给如此大的模型箱填土,是一个难题。However, one of the most basic problems that model tests need to face is filling soil into the model box. For example, the underground comprehensive test platform of Beijing University of Technology can do a model test with a maximum size of 6m × 6m × 10m. How to quickly and safely fill such a large model box is a difficult problem.

鉴于大型地下试验平台的规模大,迫切需要提出一种大型地下试验平台填土的装置和方法。In view of the large scale of the large-scale underground test platform, it is urgent to propose a device and method for filling soil for the large-scale underground test platform.

发明内容SUMMARY OF THE INVENTION

本发明的目的就是在于提出一种操作方便、填土效率高的试验装置,用于大型地下试验平台的填土。The purpose of the present invention is to provide a test device with convenient operation and high soil filling efficiency, which is used for soil filling of a large underground test platform.

本发明所要解决的技术问题就是提供一种用于大型地下试验平台填土的装置和方法,可以方便地为地下试验平台提供,本装置安装方便,操作简单,为研究地下结构或岩土试验提供可靠的试验平台填土方案。The technical problem to be solved by the present invention is to provide a device and method for filling soil for a large-scale underground test platform, which can be conveniently provided for the underground test platform. Reliable test platform filling scheme.

本发明的技术解决方案是:The technical solution of the present invention is:

一种滑梯式大型地下试验平台的模型试验填土装置,该装置包括台秤(1)、小推车(2)、休息平台(3)、滑梯装置、竖向钢板(12)、合页(13)、螺栓(14)、竖向挡板(15)、模型箱(16)、竖向支撑杆(17)、钢板槽(18)和防冲击套筒(19)。A model test filling device for a slide-type large-scale underground test platform, the device comprises a platform scale (1), a trolley (2), a rest platform (3), a slide device, a vertical steel plate (12), a hinge (13) ), bolts (14), vertical baffles (15), model boxes (16), vertical support rods (17), steel plate grooves (18) and impact sleeves (19).

台秤(1)用于称量每次放入小推车(2)中试验填土的质量。The platform scale (1) is used to weigh the mass of the test fill each time it is put into the trolley (2).

小推车(2)为手扶式平板车,小推车(2)的手把处设有竖向支撑,竖向支撑放在地上能够保持小推车(2)平衡,试验时将试验用土推往试验平台的休息平台(3)上,然后反复运输试验用土。The trolley (2) is a walk-behind flatbed. The handle of the trolley (2) is provided with a vertical support. The vertical support can keep the trolley (2) balanced when placed on the ground. To the rest platform (3) of the test platform, and then repeatedly transport the soil for the test.

休息平台(3)是一个正面无钢板的空心钢板箱,空心钢板箱的底板与地面锚固形成一个整体,用于停放小推车(2)和固定滑梯装置,滑梯装置沿斜向布置。The rest platform (3) is a hollow steel box with no steel plate on the front. The bottom plate of the hollow steel box is anchored with the ground to form a whole, and is used for parking the trolley (2) and fixing the slide device, and the slide device is arranged in an oblique direction.

滑梯装置由漏斗状滑梯(4)、首部滑梯(5)、中部滑梯(6)、尾部滑梯(7)和可更换曲率出口(8)组成。漏斗状滑梯(4)、首部滑梯(5)、中部滑梯(6)、尾部滑梯(7)和可更换曲率出口(8)顺次连接;漏斗状滑梯(4)、首部滑梯(5)、中部滑梯(6)、尾部滑梯(7)和可更换曲率出口(8)的首尾处均设有外伸的肋板(9),通过肋板(9)相互连接。The slide device is composed of a funnel-shaped slide (4), a first slide (5), a middle slide (6), a tail slide (7) and a replaceable curvature outlet (8). The funnel-shaped slide (4), the first slide (5), the middle slide (6), the tail slide (7) and the replaceable curvature outlet (8) are connected in sequence; the funnel-shaped slide (4), the first slide (5), the middle slide The slide (6), the tail slide (7) and the head and tail of the replaceable curvature outlet (8) are all provided with extending ribs (9), which are connected to each other through the ribs (9).

首部滑梯(5)、中部滑梯(6)和尾部滑梯(7)的内部均由支撑板(10)和圆形钢环(11)组成,圆形钢环(11)用于土体的运输,圆形钢环(11)的外侧设有支撑板(10),支撑板(10)用于防止圆形钢环(11)移动变形。滑梯装置与模型箱(16)的位置相对应。The interior of the first slide (5), the middle slide (6) and the tail slide (7) are all composed of a support plate (10) and a circular steel ring (11), and the circular steel ring (11) is used for soil transportation, A support plate (10) is provided on the outer side of the circular steel ring (11), and the support plate (10) is used to prevent the circular steel ring (11) from moving and deforming. The slide device corresponds to the position of the model box (16).

漏斗状滑梯(4)的主体部分与竖向钢板(12)之间由活动的合页(13)连接,竖向钢板(12)能够自由旋转。竖向钢板(12)与休息平台(3)的竖向面板用螺栓(14)相连,保证漏斗状滑梯(4)和休息平台(3)形成一个固定的整体。The main part of the funnel-shaped slide (4) is connected with the vertical steel plate (12) by a movable hinge (13), and the vertical steel plate (12) can rotate freely. The vertical steel plate (12) is connected with the vertical panel of the rest platform (3) by bolts (14) to ensure that the funnel-shaped slide (4) and the rest platform (3) form a fixed whole.

尾部滑梯(7)下面设有一竖向挡板(15),竖向挡板(15)支撑在模型箱(16)的一侧箱壁上,竖向挡板(15)起着防止滑梯装置下滑的作用。A vertical baffle (15) is provided below the rear slide (7), the vertical baffle (15) is supported on one side wall of the model box (16), and the vertical baffle (15) prevents the slide device from sliding down effect.

可更换曲率出口(8)起着转换滑梯内试验用土运动方向的作用。根据试验用土需要滑落的箱底位置,选择不同长度和不同曲率的可更换曲率出口(8),将可更换曲率出口(8)与尾部滑梯(7)连接。The replaceable curvature outlet (8) plays the role of changing the direction of movement of the soil for testing in the slide. According to the position of the bottom of the box where the test soil needs to slide down, select the replaceable curvature outlet (8) with different lengths and different curvatures, and connect the replaceable curvature outlet (8) to the rear slide (7).

滑梯装置的底部设有竖向支撑杆(17),竖向支撑杆(17)上端连接有一个钢板槽(18),竖向支撑杆(17)起着支撑滑梯装置的作用,滑梯装置的倾斜角和钢板槽(18)的倾斜角相同。The bottom of the slide device is provided with a vertical support rod (17), the upper end of the vertical support rod (17) is connected with a steel plate groove (18), and the vertical support rod (17) plays the role of supporting the slide device, and the inclination of the slide device The angle is the same as the inclination angle of the steel plate slot (18).

防冲击套筒(19)由坚韧的柔性材料制成,防冲击套筒(19)绑扎在可更换曲面出口(8)的最下端,在重力作用下竖直向下,滑梯装置内的试验用土经过防冲击套筒(19)后降低了冲击速度。The anti-impact sleeve (19) is made of tough and flexible material, and the anti-impact sleeve (19) is bound at the lowermost end of the replaceable curved surface outlet (8), and is vertically downward under the action of gravity. The impact velocity is reduced after passing through the anti-shock sleeve (19).

滑梯装置内的圆形钢环(11)内表面贴有光滑的卷材,用于减小试验填土与圆形钢环(11)间的摩擦。The inner surface of the circular steel ring (11) in the slide device is affixed with a smooth coil to reduce the friction between the test fill and the circular steel ring (11).

利用上述滑梯式大型地下试验平台进行的模型试验填土装置的填土方法,该方法包括下列步骤:Utilize the above-mentioned sliding type large-scale underground test platform to carry out the soil filling method of the model test soil filling device, and this method comprises the following steps:

S1根据试验模型箱(16)内填土的控制密度,计算每层预计高度填土的质量。S1, according to the control density of the filling in the test model box (16), calculate the quality of the filling at the predicted height of each layer.

S2在试验用土堆放区,用台秤(1)分次称量一定量试验用土后装入小推车(2)内,记录小推车(2)内的试验用土的质量。S2 In the test soil stacking area, use a platform scale (1) to weigh a certain amount of test soil in stages and put it into the trolley (2), and record the quality of the test soil in the trolley (2).

S3将小推车推至试验平台的休息平台(3)上,用铁锹或人工掀车将试验用土倒入滑道的漏斗状开口中,试验用土通过滑道滑入模型箱(16)中。S3 pushes the trolley to the rest platform (3) of the test platform, pours the test soil into the funnel-shaped opening of the chute with a shovel or manual lift, and slides the test soil into the model box (16) through the chute.

S4将小推车(2)推回试验用土堆放区,将称量后的试验用土再次装入小推车(2)中,直到本层的试验用土质量达到计算值。S4 Push the trolley (2) back to the test soil stacking area, and load the weighed test soil into the trolley (2) again until the mass of the test soil in this layer reaches the calculated value.

S5工人经扶梯进入模型箱内,用平砂耙将试验用土扒平,然后根据试验方案人工夯实或用机械夯实。S5 workers enter the model box through the escalator, flatten the soil for the test with a sand rake, and then compact it manually or mechanically according to the test plan.

S6对试验用土进行分层夯实,同一位置夯击一定次数,一夯压半夯,夯夯相连,行行相连。夯完第一遍,重新整平,然后夯实下一遍。S6 The test soil is compacted in layers, and the same position is rammed for a certain number of times, one compaction is pressed and half compacted, the compaction is connected, and the rows are connected. After the first tamping, re-leveling, and then tamping the next time.

S7重复步骤S1-S6,完成对下一层试验用土的填筑和夯实。S7 repeats steps S1-S6 to complete the filling and compaction of the next layer of test soil.

与现有技术相比,本发明的有益效果是:Compared with the prior art, the beneficial effects of the present invention are:

(1)本发明使用一种制作简单、成本低的试验装置和方案,可以快速组装,应用于大型地下试验平台模型试验填土装置。同时,试验填土结束后,拆卸简单。(1) The present invention uses a simple and low-cost test device and scheme, which can be quickly assembled and applied to a large-scale underground test platform model test filling device. At the same time, after the test fill is completed, the disassembly is simple.

(2)本发明利用了填土的重力势能,不用传统的将试验用土提起放入等繁重的工作量,填筑速度快,省时省力。(2) The present invention utilizes the gravitational potential energy of the filling soil, does not require the traditional heavy workload such as lifting and placing the soil for testing, the filling speed is fast, and time and effort are saved.

(3)本发明重在为大型地下试验平台填土提供一个思路,根据试验平台和模型箱顶部的实际空间位置关系,可以分段架设直线型滑梯或曲线型滑梯,具有很大的灵活性。(3) The present invention focuses on providing an idea for filling soil for large underground test platforms. According to the actual spatial position relationship between the test platform and the top of the model box, linear slides or curved slides can be erected in sections, with great flexibility.

附图说明Description of drawings

图1一种滑梯式大型地下试验平台的模型试验填土装置的示意图。Fig. 1 is a schematic diagram of a model test soil filling device of a slide-type large-scale underground test platform.

图2一种滑梯式大型地下试验平台的模型试验填土装置漏斗状滑梯、首部滑梯局部示意图。Figure 2 is a partial schematic diagram of the funnel-shaped slide and the head slide of the model test filling device of a slide-type large-scale underground test platform.

图3一种滑梯式大型地下试验平台的模型试验填土装置首部、中部、尾部滑梯局部示意图。Fig. 3 is a partial schematic diagram of the head, middle and tail slides of a model test filling device of a slide-type large-scale underground test platform.

图4一种滑梯式大型地下试验平台的模型试验填土装置可更换曲率出口和防冲击套筒局部示意图。Figure 4 is a partial schematic diagram of the replaceable curvature outlet and the anti-shock sleeve of the model test soil filling device of a slide-type large-scale underground test platform.

图5滑梯装置的俯视图。Figure 5 is a top view of the slide device.

图6滑梯装置首部滑梯、中部滑梯、尾部滑梯部分的横断面图。Figure 6 is a cross-sectional view of the first slide, the middle slide, and the tail slide of the slide device.

图中:1.台秤,2.小推车,3.休息平台,4.漏斗状滑梯,5.首部滑梯,6.中部滑梯,7.尾部滑梯,8.可更换曲率出口,9.肋板,10.支撑板,11.圆形钢环,12.竖向钢板,13.合页,14.螺栓,15.竖向挡板,16.模型箱,17.竖向支撑杆,18.钢板槽,19.防冲击套筒。In the picture: 1. Platform scale, 2. Trolley, 3. Rest platform, 4. Funnel slide, 5. First slide, 6. Middle slide, 7. Tail slide, 8. Replaceable curvature outlet, 9. Rib , 10. Support plate, 11. Circular steel ring, 12. Vertical steel plate, 13. Hinge, 14. Bolt, 15. Vertical baffle, 16. Model box, 17. Vertical support rod, 18. Steel plate Slot, 19. Impact sleeve.

具体实施方式Detailed ways

下面结合附图及实施方式对本发明进行进一步说明,但不应以此限制本发明的保护范围。The present invention will be further described below with reference to the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited by this.

先参考图1-6,本发明滑梯式大型地下试验平台的模型试验填土装置,其构成包括:台秤(1),小推车(2),休息平台(3)和滑梯装置,可更换曲率出口(8),竖向支撑杆(17),防冲击套筒(19)。Referring first to Figures 1-6, the model test filling device of the slide-type large-scale underground test platform of the present invention is composed of a platform scale (1), a trolley (2), a rest platform (3) and a slide device, and the curvature can be replaced. Outlet (8), vertical support rod (17), anti-shock sleeve (19).

台秤(1),用于称量每次放入小推车中试验填土的质量。小推车(2),试验时将试验用土推往试验平台的休息平台上,然后反复运输试验用土。休息平台(3),是一个正面无钢板的空心钢板箱,底板与地面锚固,形成一个整体,用于停放小推车(2)和固定下部的整个滑梯装置。Platform scale (1), used to weigh the mass of the test fill each time it is put into the trolley. Small cart (2), during the test, push the test soil to the rest platform of the test platform, and then repeatedly transport the test soil. The rest platform (3) is a hollow steel box with no steel plate on the front, the bottom plate is anchored with the ground to form a whole, and is used for parking the trolley (2) and fixing the entire slide device at the lower part.

滑梯装置是本发明的核心部件,由漏斗状滑梯(4)、首部滑梯(5)、中部滑梯(6)、尾部滑梯(7)组成和可更换曲率出口(8)组成。各组成组成部分的首尾处均有外伸的肋板(9),各部分通过肋板(9)之间的螺栓相互连接。其中,首部滑梯(5)、中部滑梯(6)和尾部滑梯(7),其内部均由支撑板(10)和圆形钢环(11)组成,圆形钢环(11)用于土体的运输,支撑板(10)用于防止圆形钢环(11)的移动的变形。所述的漏斗状滑梯(4),其主体部分与竖向钢板(12)与之间由活动的合页(13)连接,竖向钢板(12)可以自由旋转。竖向钢板(12)与休息平台(3)的竖向面板用螺栓(14)相连,保证漏斗状滑梯(4)和休息平台(3)形成一个固定的整体。所述的尾部滑梯(7),下面有一竖向挡板(15),支撑在模型箱(16)的一侧箱壁上,起着防止滑梯装置下滑的作用。所述的可更换曲率出口(8),起着转换滑梯内试验用土运动方向的作用。根据试验用土需要滑落的箱底位置,可以选择不同长度和不同曲率的可更换曲率出口(8),将其与尾部滑梯(7)连接即可。The slide device is the core part of the present invention, which consists of a funnel-shaped slide (4), a first slide (5), a middle slide (6), a tail slide (7) and a replaceable curvature outlet (8). The head and tail of each component are provided with outstretched rib plates (9), and each part is connected to each other by bolts between the rib plates (9). Among them, the first slide (5), the middle slide (6) and the tail slide (7) are all composed of a support plate (10) and a circular steel ring (11), and the circular steel ring (11) is used for soil During transportation, the support plate (10) is used to prevent the movement of the circular steel ring (11) from deformation. The main part of the funnel-shaped slide (4) is connected with the vertical steel plate (12) by a movable hinge (13), and the vertical steel plate (12) can rotate freely. The vertical steel plate (12) is connected with the vertical panel of the rest platform (3) by bolts (14) to ensure that the funnel-shaped slide (4) and the rest platform (3) form a fixed whole. The tail slide (7) has a vertical baffle plate (15) below it, which is supported on one side wall of the model box (16) and plays a role in preventing the slide device from sliding down. The replaceable curvature outlet (8) plays the role of converting the movement direction of the soil for testing in the slide. According to the position of the bottom of the box where the test soil needs to slide down, a replaceable curvature outlet (8) with different lengths and curvatures can be selected, and it can be connected with the rear slide (7).

竖向支撑杆(17),其上端连接一个钢板槽(18),起着支撑滑道的作用,滑道的倾斜角和钢板槽(18)的倾斜角相同。防冲击套筒(19),坚韧的柔性材料,绑扎在可更换曲面出口(8)的最下端,在重力作用下竖直向下,滑梯内试验用土经防冲击套筒(19)后,速度降低。The vertical support rod (17), the upper end of which is connected with a steel plate groove (18), plays the role of supporting the slideway, and the inclination angle of the slideway is the same as that of the steel plate groove (18). The anti-impact sleeve (19), a tough and flexible material, is bound at the lowermost end of the replaceable curved surface outlet (8), and is vertically downward under the action of gravity. After the test soil in the slide passes through the anti-impact sleeve (19), the velocity reduce.

上述的滑梯装置内的圆形钢环(11)的内表面贴有光滑的卷材,用于减小试验填土与钢环间的摩擦。The inner surface of the circular steel ring (11) in the above-mentioned slide device is affixed with a smooth coil to reduce the friction between the test fill and the steel ring.

下面以模型试验材料为砂土的实施例的操作步骤如下:The following operation steps are as follows with the model test material as the embodiment of sand:

S1根据模型箱(16)内填土的控制密度,计算每层预计高度填土的质量。在砂土堆土区旁,用台秤(1)分次称量砂土质量,然后装入小推车(2)内,计算并记录本次小推车的试验用土的总质量。S1, according to the control density of the fill in the model box (16), calculates the quality of the fill of the expected height of each layer. Next to the sand pile area, use the platform scale (1) to weigh the sand mass in stages, then load it into the trolley (2), and calculate and record the total mass of the test soil for the trolley.

S2将小推车推至试验平台的休息平台(3)上,用铁锹或人工掀车将试验用土倒入滑道的漏斗状开口中,试验用土通过滑道滑入模型箱(16)中。S2 push the trolley to the rest platform (3) of the test platform, pour the test soil into the funnel-shaped opening of the slideway with a shovel or manual lift, and slide the test soil into the model box (16) through the slideway.

S3将小推车(2)推回试验用土堆放区,将称量后的试验用土再次装入小推车(2)中,直到本层的试验用土质量达到计算值。S3 Push the trolley (2) back to the test soil stacking area, and load the weighed test soil into the trolley (2) again until the mass of the test soil in this layer reaches the calculated value.

S4工人经扶梯进入模型箱内,用平砂耙将试验用土扒平,然后根据试验方案人工夯实或用机械夯实。对试验用土进行分层夯实,同一位置夯击一定次数,一夯压半夯,夯夯相连,行行相连。夯完第一遍,重新整平,然后夯实下一遍。S4 workers entered the model box through the escalator, flattened the soil for the test with a sand rake, and then compacted it manually or mechanically according to the test plan. The test soil is compacted in layers, and the same position is rammed for a certain number of times. After the first tamping, re-leveling, and then tamping the next time.

S5重复步骤(1)-(4),完成对下一层砂土的填筑和夯实。S5 repeats steps (1)-(4) to complete the filling and compaction of the next layer of sand.

以上对发明的组成部分和实施方式进行了说明,但本发明并不以此为限,还可以在不超出本发明的要点的范围内进行适当变更。The components and embodiments of the present invention have been described above, but the present invention is not limited thereto, and can be appropriately changed within a range not departing from the gist of the present invention.

Claims (3)

1. The utility model provides a large-scale underground test platform's of slide formula model test device of filling soil which characterized in that: the device comprises a platform scale (1), a trolley (2), a rest platform (3), a slide device, a vertical steel plate (12), a hinge (13), a bolt (14), a vertical baffle (15), a model box (16), a vertical supporting rod (17), a steel plate groove (18) and an impact-proof sleeve (19):
the platform scale (1) is used for weighing the quality of the test filling soil which is put into the small cart (2) each time;
the small handcart (2) is a walking flat car, a vertical support is arranged at the handle of the small handcart (2), the vertical support is placed on the ground to keep the small handcart (2) balanced, soil for test is pushed onto a rest platform (3) of the test platform during test, and then the soil for test is transported repeatedly;
the rest platform (3) is a hollow steel plate box without a steel plate on the front surface, a bottom plate of the hollow steel plate box is anchored with the ground to form a whole and used for parking the trolley (2) and fixing the slide device, and the slide device is obliquely arranged;
the slide device consists of a funnel-shaped slide (4), a front slide (5), a middle slide (6), a tail slide (7) and a replaceable curvature outlet (8); the funnel-shaped slide (4), the head slide (5), the middle slide (6), the tail slide (7) and the replaceable curvature outlet (8) are sequentially connected; the end parts of the funnel-shaped slide (4), the head slide (5), the middle slide (6), the tail slide (7) and the replaceable curvature outlet (8) are all provided with outward extending rib plates (9) which are connected with each other through the rib plates (9);
the interior of each of the head slide (5), the middle slide (6) and the tail slide (7) is composed of a support plate (10) and a circular steel ring (11), the circular steel ring (11) is used for transporting soil, the support plate (10) is arranged on the outer side of the circular steel ring (11), and the support plate (10) is used for preventing the circular steel ring (11) from moving and deforming; the slide device corresponds to the position of the model box (16);
the main part of the funnel-shaped slide (4) is connected with a vertical steel plate (12) through a movable hinge (13), and the vertical steel plate (12) can rotate freely; the vertical steel plate (12) is connected with a vertical panel of the rest platform (3) through a bolt (14), so that the funnel-shaped slide (4) and the rest platform (3) form a fixed whole;
a vertical baffle (15) is arranged below the tail slide (7), the vertical baffle (15) is supported on the wall of one side of the model box (16), and the vertical baffle (15) plays a role in preventing the slide device from sliding downwards;
the replaceable curvature outlet (8) plays a role in converting the movement direction of the test soil in the slide; according to the position of the box bottom where the test soil is required to slide down, the replaceable curvature outlets (8) with different lengths and curvatures are selected, and the replaceable curvature outlets (8) are connected with the tail slide (7);
the bottom of the slide device is provided with a vertical support rod (17), the upper end of the vertical support rod (17) is connected with a steel plate groove (18), the vertical support rod (17) plays a role in supporting the slide device, and the inclination angle of the slide device is the same as that of the steel plate groove (18);
protecting against shock sleeve (19) are made by tough flexible material, and protecting against shock sleeve (19) ligature has reduced the impact velocity at the lower extreme of removable curved surface export (8), vertical downwards under the action of gravity, and the experiment in the slide device is with soil behind protecting against shock sleeve (19).
2. The model test soil filling device of the slide type large-scale underground test platform according to claim 1, characterized in that: smooth coiled materials are attached to the inner surface of a circular steel ring (11) in the slide device and used for reducing friction between test filling and the circular steel ring (11).
3. A soil filling method of a model test soil filling apparatus using the soil filling apparatus according to claim 1, characterized in that: the method comprises the following steps of,
s1, calculating the quality of the earth filling at the predicted height of each layer according to the control density of the earth filling in the test model box (16);
s2, weighing a certain amount of soil for the test in a soil piling area for the test by a platform scale (1) in a grading manner, then loading the soil for the test into the small trolley (2), and recording the total mass of the soil for the test of the small trolley (2);
s3, pushing the small cart to a rest platform (3) of the test platform, pouring test soil into a funnel-shaped opening of a slideway by using a spade or a manual lifting vehicle, and sliding the test soil into a model box (16) through the slideway;
s4, pushing the small cart (2) back to the test soil stacking area, and filling the weighed test soil into the small cart (2) again until the quality of the test soil on the layer reaches a calculated value;
s5, a worker enters the model box through the escalator, the soil for the test is scraped flat by a flat sand rake, and then manual tamping or mechanical tamping is selected according to the test scheme;
s6, ramming the soil for the test layer by layer, ramming the soil for a certain number of times at the same position, and performing ramming, namely half ramming, ramming connection and row connection; tamping for the first time, leveling again, and then tamping for the next time;
s7 repeating steps S1-S6 to complete filling and tamping of the soil for the next layer of test.
CN201810197389.1A 2018-03-11 2018-03-11 Model test soil filling device and method for slide type large underground test platform Expired - Fee Related CN108444783B (en)

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