阅读说明：本技术 一种桩承式路堤土拱效应可视化的模拟实验装置 (A kind of visual imitative experimental appliance of Piled Embankments soil arching effect ) 是由 陈俊涛 冯德銮 梁仕华 江杰东 于 2019-07-22 设计创作，主要内容包括：一种桩承式路堤土拱效应可视化的模拟实验装置,包括负载模块和数码光弹仪；负载模块包括控制平台、量力环、透明的密封箱体、门型架和升降台,门型架固定在控制平台上,升降台固定在控制平台上且位于门型架内,箱体放置在升降台上,箱体内在底部固定有竖向的刚性桩,箱体内在刚性桩上方设有压板,箱体内在底部与压板之间填充有光弹材料,压板顶面设有推杆,推杆与量力环下端固定连接,量力环上端固定在门型架上；箱体的一侧由内至外依次设有第一四分之一波片、第一偏振镜和摄像模块,箱体的另一侧由内至外依次设有第二四分之一波片、第二偏振镜和光源,计算机与摄像模块通过数据线电连接。本发明能对桩承式路堤土拱效应进行实时模拟并监测。(A kind of visual imitative experimental appliance of Piled Embankments soil arching effect, including load blocks and digital photo-elastic instrument；Load blocks include control platform, ring of measuring one's own ability, transparent seal case, door type frame and lifting platform, door type frame is fixed in control platform, lifting platform is fixed in control platform and is located in door type frame, cabinet is placed on lifting platform, vertical rigid pile is fixed in bottom in cabinet, pressing plate is equipped in cabinet above rigid pile, photoelastic material is filled in cabinet between bottom and pressing plate, pressing plate top surface is equipped with push rod, push rod is fixedly connected with ring lower end of measuring one's own ability, and ring upper end of measuring one's own ability is fixed on door type frame；The side of cabinet is successively arranged the first quarter-wave plate, the first polariscope and photographing module from the inside to the outside, the other side of cabinet is successively arranged the second quarter-wave plate, the second polariscope and light source from the inside to the outside, and computer is electrically connected with photographing module by data line.The present invention can be simulated and be monitored in real time to Piled Embankments soil arching effect.)

1. a kind of visual imitative experimental appliance of Piled Embankments soil arching effect, it is characterised in that: including load blocks sum number Code photo-elastic instrument, digital photo-elastic instrument includes computer, photographing module, photoelastic material, the first polariscope, the second polariscope, the one or four / mono- wave plate, the second quarter-wave plate and light source；Load blocks include control platform, ring of measuring one's own ability, transparent seal case, Door type frame and lifting platform, door type frame are fixed in control platform, and lifting platform is fixed in control platform and is located in door type frame, case Body is placed on lifting platform, is fixed with vertical rigid pile in cabinet in bottom, is equipped with pressing plate, case above rigid pile in cabinet Photoelastic material is filled between bottom and pressing plate in vivo, pressing plate top surface is equipped with the aperture on cabinet and extend out to pushing away outside cabinet Bar, push rod are fixedly connected with ring lower end of measuring one's own ability, and ring upper end of measuring one's own ability is fixed by the connecting rod on door type frame；The side of cabinet is by interior To the first quarter-wave plate, the first polariscope and photographing module is successively arranged outside, the other side of cabinet is successively set from the inside to the outside Have the second quarter-wave plate, the second polariscope and a light source, photoelastic material, the first polariscope, the second polariscope, the one or four/ One wave plate, the second quarter-wave plate, photographing module and light source are located on same central axes, and computer and photographing module pass through number It is electrically connected according to line.

2. the visual imitative experimental appliance of Piled Embankments soil arching effect according to claim 1, it is characterised in that: institute Stating cabinet includes box-like body and case lid, and box-like body is connected with case lid by bolt.

3. the visual imitative experimental appliance of Piled Embankments soil arching effect according to claim 1, it is characterised in that: institute The quantity for stating rigid pile is two, and two rigid piles are symmetrically distributed in the bottom of box.

Technical field

The present invention relates to a kind of visual imitative experimental appliances of Piled Embankments soil arching effect.

Background technique

In order to improve the bearing capacity of embankment, this basement process form of Piled Embankments usually will use in engineering.This Kind processing form can pass to the load being subject on road surface in the preferable soil layer of lower part bearing capacity, and make in Piled Embankments During, soil arching effect plays an important role.Soil arching effect can by stress transfer to stake that foundation soil is subject to, To reduce the load that foundation soil is subject to, achieve the effect that improve bearing capacity.Currently, in order to probe into soil arching effect deeper into ground The mechanism of generation, improves the safety of Piled Embankments soil arching effect and the bearing capacity of embankment, many technical staff pass through Field test and the means of simulation understand soil arching effect on bearing-type embankment and act on to realize, some technical staff are by answering Power box is studied soil arching effect using image processing techniques mode and successfully finds out displacement field, but the solution for stress field Still face many difficulties, at the same when using stress box on can not rule out the influence of its own ambient stress.

In conclusion applicants contemplate that having in order to become apparent from the mechanism that soil arching effect generation is probed into intuitively observation Necessity provides a kind of visual imitative experimental appliance of Piled Embankments soil arching effect.

Summary of the invention

Present invention aims to overcome that the shortcomings that prior art and insufficient, providing a kind of Piled Embankments soil arching effect can Depending on the imitative experimental appliance changed, it can understand that the mechanism of soil arching effect generation is probed into intuitively observation.

To achieve the above object, The technical solution adopted by the invention is as follows:

A kind of visual imitative experimental appliance of Piled Embankments soil arching effect, including load blocks and digital photo-elastic instrument, Digital photo-elastic instrument includes computer, photographing module, photoelastic material, the first polariscope, the second polariscope, the first quarter-wave Piece, the second quarter-wave plate and light source；Load blocks include control platform, ring of measuring one's own ability, transparent seal case, door type frame and Lifting platform, door type frame are fixed in control platform, and lifting platform is fixed in control platform and is located in door type frame, and cabinet is placed on On lifting platform, vertical rigid pile is fixed in cabinet in bottom, is equipped with pressing plate in cabinet above rigid pile, cabinet is interior the bottom of at Photoelastic material is filled between portion and pressing plate, pressing plate top surface is equipped with the aperture on cabinet and extend out to the push rod outside cabinet, push rod Ring lower end is fixedly connected with measuring one's own ability, and ring upper end of measuring one's own ability is fixed by the connecting rod on door type frame；The side of cabinet from the inside to the outside according to Secondary to be equipped with the first quarter-wave plate, the first polariscope and photographing module, the other side of cabinet is successively arranged second from the inside to the outside Quarter-wave plate, the second polariscope and light source, photoelastic material, the first polariscope, the second polariscope, the first quarter-wave Piece, the second quarter-wave plate, photographing module and light source are located on same central axes, and computer and photographing module pass through data line Electrical connection.

From the foregoing, it will be observed that when in use, the present invention is utilized is equipped with rigid pile in transparent cabinet, stake is simulated by rigid pile The pile foundation in formula embankment is held, and is filled with photoelastic material between bottom and pressing plate, is then arranged digital photo-elastic instrument, then Starting lifting platform rises cabinet, and at this time since the position of pressing plate is constant, pressing plate compresses photoelastic material, and photoelastic material squeezes rigid Property stake, and ring of measuring one's own ability can measure the size of pressing plate loading force, in the stress transfer to rigid pile that pressing plate is subject at this time, that is, realize Simulate Piled Embankments soil arching effect.

It is the transparent material with birefringence additionally, due to photoelastic material, this material is in the state of no stress Without birefringence, but working as it is that optical anisotropy can be shown in polarized light field by stress, is occurred Birefringent phenomenon generates colored interference fringe picture, and the color gradient of Color Interfering Fringes By Use figure is under different stresses It can change, therefore according to the relationship between color gradient and stress, so that it may realize the calibration to photoelastic material；Therefore it opens Emit light to photoelastic material using light source while dynamic lifting platform rises cabinet, and records photoelastic material with photographing module Image, and the Color Interfering Fringes By Use figure changed, and a series of Color Interfering Fringes By Use figure of variations is sent to computer, it counts Calculation machine demarcates Color Interfering Fringes By Use figure, obtains stress of the photoelastic material in cabinet uphill process according to the result of calibration Field situation of change, namely it is that of obtaining the stress condition of the rigid pile in cabinet uphill process, to realize to Piled Embankments Soil arching effect is simulated and is monitored in real time, can be understood that the mechanism of soil arching effect generation is probed into intuitively observation, is conducive to simultaneously Specific aim is carried out to pile foundation in practical applications and reinforces maintenance, and is ensured to the safety of pile foundation and Piled Embankments, while can be with Save operating expenses.

As an improvement of the present invention, the cabinet includes box-like body and case lid, and box-like body and case lid pass through spiral shell Bolt is connected.

As an improvement of the present invention, the quantity of the rigid pile is two, and two rigid piles are symmetrically distributed in cabinet Bottom.

Compared with prior art, the innovative point of technical solution of the present invention and beneficial effect are:

The present invention is simulated and is monitored in real time to Piled Embankments soil arching effect, can understand that intuitively native arch is probed into observation The mechanism that effect generates, while being conducive to carry out specific aim to pile foundation in practical applications to reinforce maintenance, and ensure to pile foundation and The safety of Piled Embankments, while operating expenses can be saved.

Detailed description of the invention

Fig. 1 is the schematic diagram of the visual imitative experimental appliance of Piled Embankments soil arching effect of the present invention；

Fig. 2 is the cross-sectional view of the visual imitative experimental appliance load blocks of Piled Embankments soil arching effect of the present invention.

Specific embodiment

Present invention will be further explained below with reference to the attached drawings and examples.It is understood that tool described herein Body embodiment is used only for explaining the present invention rather than limiting the invention.It also should be noted that for the ease of retouching It states, only some but not all contents related to the present invention are shown in the drawings.