CN205138472U - New bridge pre -compaction settlement observation device in wide is pieced together to bridge - Google Patents

Abstract

The utility model provides a new bridge pre -compaction settlement observation device in wide is pieced together to bridge, is including fixing the fixed baseplate on the new bridge body and fixing the L type anchoring pipe support on the old bridge body, fixed baseplate is last through connecting rod fixed stay touch panel, the end connection percentage table of L type anchoring pipe support, and the gauge head of percentage table contacts with the touch panel. Fixed baseplate comprises chassis and the standpipe fixed on the chassis, in the middle of the connecting rod stretches into the standpipe, and the side wall mounting of standpipe is used for a fastening to decide a hexagon nut of connecting rod. L type anchoring pipe support comprises pipe support dish and the L type stay tube fixed on the pipe support dish, the percentage table passes through the end connection of gauge outfit connecting rod and L type stay tube, in the middle of gauge outfit connecting rod afterbody stretches into L type stay tube, and installs the 2nd hexagon nut who is used for the tight gauge outfit connecting rod in top on the body lateral wall. The utility model has the advantages of reasonable design, process conveniently, easy and simple to handle and excellent in use effect, test data accurate.

Description

An observation device for preloading and settlement of new bridges in bridge widening

technical field

The utility model relates to the field of bridge construction, in particular to an observation device for preloading and settlement of a new bridge in bridge widening.

Background technique

With the continuous rapid development of my country's economy and the continuous increase of traffic volume, the annual growth rate of traffic in most areas is 5% to 15%. The original highway needs to improve the traffic capacity, and the urban intercommunication urgently needs to be expanded. Therefore, the large-scale old bridge widening project should be carried out. And born.

After the bridge is widened and connected, there is a big difference between the foundation settlement of the new bridge and the old bridge, which will cause many cracks on the bridge deck in the later stage. Especially in the loess area, because the loess itself has collapsibility, the foundation settlement is more significant. During the bridge widening, in order to solve the problem that the foundation settlement of the new and old bridges is very different in the later stage, during the construction process, the new bridge needs to be preloaded for several months after the beams are erected. Once the foundation settlement is stable, the old and new bridges can be spliced together. Nowadays, level instruments are often used for bridge preload settlement observations. This method requires repeated operations and installation of instruments for each settlement observation. At the same time, it is inconvenient to repeatedly erect the brackets, it is difficult to ensure accurate installation and positioning of the brackets, and it is easy to cause inaccurate measurement data. Accuracy and many other practical issues.

Utility model content

The purpose of this utility model is to aim at the defects in the above-mentioned prior art, and provide a bridge-widening Zhongxin bridge preloading settlement observation device, which has reasonable structural design, convenient processing and installation, easy operation and good use effect, and test data precise.

In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: including a fixed base fixed on the new bridge body and an L-shaped anchor pipe frame fixed on the old bridge body;

The contact plate is fixedly supported by the connecting rod on the fixed base, the end of the L-shaped anchor pipe frame is connected with the dial indicator, and the measuring head of the dial indicator is connected with the contact plate.

The fixed base is composed of a chassis and a vertical pipe fixed on the chassis; the connecting rod extends into the vertical pipe, and the first hexagonal nut for tightening and fixing the connecting rod is installed on the side wall of the vertical pipe.

The chassis of the fixed base is symmetrically provided with first installation holes for installing the first expansion bolts.

The L-shaped anchoring pipe frame is composed of a pipe frame plate and an L-shaped support tube fixed on the pipe frame plate; the dial indicator is connected to the end of the L-shaped support tube through the connecting rod of the meter head, and the tail of the connecting rod of the meter head It extends into the L-shaped support pipe, and a second hex nut for tightening the connecting rod of the meter head is installed on the side wall of the pipe body.

Second installation holes for installing second expansion bolts are symmetrically opened around the pipe frame plate of the L-shaped anchor pipe frame.

The head of the meter connecting rod is provided with a U-shaped fixing clip, the probe sleeve of the dial indicator is installed on the U-shaped fixing clip, and the tail of the U-shaped fixing clip is connected to the meter connecting rod by a tightening nut.

The corners of the L-shaped support pipe are provided with oblique rods for increasing stability.

Compared with the prior art, the utility model has the following beneficial effects: by installing the contact plate on the new bridge body, the dial gauge is connected to the old bridge body through an L-shaped anchor pipe frame, and the dial gauge is measured during use. When the preload of the new bridge body under test settles, the contact plate on the fixed base will sink down accordingly, because the measuring head of the dial indicator is compressed in advance and always keeps in line with the The contact plate is connected, so the downward extension of the probe will produce a reading on the dial indicator. As the new bridge body continues to settle, the reading value of the dial indicator will gradually decrease. From the analysis of the reading data of the dial indicator collected over a period of time, if the reading data of the dial indicator collected later remains unchanged, it can be determined that the settlement of the new bridge body has reached stability, thereby providing the construction party with the new bridge body. Reasonable time for splicing with the old bridge body. The utility model has the advantages of reasonable structural design, convenient processing and installation, easy operation, good use effect, accurate test data and the like on the whole.

Further, the fixed base of the utility model is composed of a chassis and a vertical pipe fixed on the chassis. The connecting rod for fixedly supporting the contact plate extends into the vertical pipe, and the side wall of the vertical pipe is installed on the side wall of the vertical pipe for tightening the fixed connecting rod. The first hex nut, the anchor pipe frame is composed of a pipe frame plate and an L-shaped support tube fixed on the pipe frame plate; the dial indicator is connected to the end of the L-shaped support tube through the head connecting rod The tail protrudes into the L-shaped support tube, and the second hex nut is installed on the side wall of the tube body to tighten the connecting rod of the gauge head. By loosening the first hex nut, the height of the touch plate can be adjusted, and loosening the second hex nut The two hexagonal nuts can adjust the position of the gauge head, so that the gauge head of the dial indicator can meet the requirements of connecting with the contact plate, and the adaptability is also improved.

Description of drawings

The overall structure schematic diagram of Fig. 1 the utility model;

Figure 2 is the top view of the connecting rod of the meter head of the utility model;

Figure 3 is the front view of the fixed base of the utility model;

Fig. 4 left view of the fixed base of the utility model;

Figure 5 is the top view of the fixed base of the utility model;

Figure 6 is the front view of the utility model L-shaped anchor pipe support;

Fig. 7 is the left view of the utility model L-shaped anchor pipe support;

Fig. 8 is a top view of the L-shaped anchor pipe support of the utility model.

In the attached drawings: 1. Dial indicator; 2. Meter connecting rod; 2-1. U-shaped clamp; 2-2. Tightening nut; 3-1. Connecting rod; 3-2. Touch plate; 4. Fixed base; 4-1. Chassis; 4-2. Standpipe; 4-3. First installation hole; 5. L-shaped anchor pipe frame; 5-1. Pipe frame plate; 5-2. L-shaped support Tube; 5-3. Second mounting hole; 6. New bridge body; 7. Old bridge body; 8. First expansion bolt; 9. First hex nut; 10. Second hex nut; 11. Second Expansion bolts;

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Figures 1 and 2, the structure of the utility model includes a dial gauge 1, a gauge head connecting rod 2, a connecting rod 3-1, a contact plate 3-2, a fixed base 4, an L-shaped anchor pipe frame 5, and a new bridge Body 6, old bridge body 7, expansion bolts, hex nuts, U-shaped clamp 2-1 and tightening nut 2-2. The fixed base 4 is fixed on the new bridge body 6, and the L-shaped anchor pipe frame 5 is fixed on the old bridge body 7. Wherein, there are eight expansion bolts, four hex nuts, one U-shaped fixing clip 2-1 and one tightening nut 2-2, and they all play a fixed role. On the fixed base 4, the contact plate 3-2 is fixedly supported by the connecting rod 3-1. The fixed base 4 is composed of the chassis 4-1 and the vertical pipe 4-2 fixed on the chassis 4-1. The connecting rod 3-1 extends Into the middle of the standpipe 4-2, and the first hexagonal nut 9 that plays a tightening effect is installed on the side wall of the standpipe 4-2. The L-shaped anchor pipe frame 5 is composed of the pipe frame plate 5-1 and the L-shaped support pipe 5-2 fixed on the pipe frame plate 5-1; -2 ends are connected, and the afterbody of the meter connecting rod 2 extends into the middle of the L-shaped support pipe 5-2, and the second hex nut 10 which plays a tightening effect is installed on the side wall of the pipe body.

Referring to Fig. 3-5, four first installation holes 4-3 are provided on the four corners of the chassis 4-1 of the fixed base 4 of the present invention, so that the first expansion bolt 8 can pass through and be anchored on the new bridge body 6; Two internally threaded holes are processed on one side of the standpipe 4-2 of the base 4, so that the first hex nut 9 passes through, and is used for fixing the position of the connecting rod 3-1.

Referring to Fig. 6-8, four second installation holes 5-3 are set on the four corners of the pipe frame plate 5-1 of the L-shaped anchor pipe frame 5 of the present invention, so that the second expansion bolt 11 can pass through and be anchored to the old bridge body On 7; the upper side of the steel pipe at the end of the L-shaped support pipe 5-2 is processed with two internally threaded holes, so that the second hex nut 10 passes through to fix the position of the connecting rod 2 of the meter head.

The working process of the utility model is: in actual use, after selecting the measuring point, first install the fixed base 4 on the new bridge body 6 through the first expansion bolt 8, and then find and fix it on the old bridge body 7. At the position corresponding to the base 4, install the L-shaped anchor pipe frame 5 through the second expansion bolt 11; after that, insert the connecting rod 3-1 into the vertical pipe 4-2 of the fixed base 4, if it is adjusted up and down to fit The position is tightened and fixed by the first hexagonal nut 9; at the same time, the connecting rod 2 of the meter head is inserted into the end steel pipe of the L-shaped support pipe 5-2, and if the suitable position is adjusted front and rear, it is tightened and fixed by the second hexagonal nut 10; The sub-meter 1 is fixed on the end of the connecting rod 2 of the meter head through the U-shaped fixing clip 2-1 and the tightening nut 2-2. At this time, the telescopic rod measuring head of the dial indicator 1 needs to be compressed back to nearly half, so that the pointer is on the dial Near the half of the maximum range, it is in vertical contact with the top of the touch panel 3-2. During the actual test, when the new bridge body 6 to be tested after preloading settles, the contact plate 3-2 on the fixed base 4 will sink down accordingly, because the telescopic rod measuring head of the dial indicator 1 is compressed in advance. And keep in contact with the top of the contact plate 3-2, so the telescopic rod measuring head will extend downward, so that the dial indicator 1 produces a reading, and as the new bridge body 6 continues to settle, the reading value of the dial indicator 1 is gradually changing. Small. From the analysis of the reading data of the dial indicator 1 collected in a period of time, if the reading data of the dial indicator 1 collected subsequently remains unchanged, it is determined that the settlement of the new bridge body 6 has reached stability, thereby providing the construction party with the opportunity for splicing. reasonable time.

The utility model has structural advantages and beneficial effects as follows: a. The meter connecting rod 2, the connecting rod 3-1, the contact plate 3-2, the fixed base 4, and the L-shaped anchor pipe frame 5 are all made of stainless steel materials , placed in the external environment, can avoid corrosion problems; b. The structure design is reasonable, and the processing, production, installation and layout are convenient; c. The components are connected by movable connections. It is convenient and easy to assemble on site.

The above content is a further detailed description of the utility model, and can not be considered as the specific implementation of the utility model is limited to this, for those of ordinary skill in the technical field of the utility model, without departing from the utility model concept , and several simple deduction or substitutions can also be made, all of which should be deemed to fall within the scope of protection determined by the claims.

Claims (7)

1. A new bridge preloading settlement observation device in bridge width, is characterized in that: comprise the fixed base (4) that is fixed on the new bridge body (6) and the L-type that is fixed on the old bridge body (7) Anchor pipe frame (5); The contact plate (3-2) is fixedly supported by the connecting rod (3-1) on the fixed base (4), and the end of the L-shaped anchor pipe bracket (5) is connected with a dial indicator (1) , and the measuring head of the dial indicator (1) is engaged with the contact plate (3-2). 2. The new bridge preloading settlement observation device in bridge widening according to claim 1, characterized in that: the fixed base (4) is fixed on the chassis (4-1) by the chassis (4-1) The vertical pipe (4-2) on the top is composed of; the connecting rod (3-1) stretches into the middle of the vertical pipe (4-2), and the side wall of the vertical pipe (4-2) is installed for tightening the fixed connecting rod ( 3-1) the first hex nut (9). 3. The new bridge preload settlement observation device in bridge widening according to claim 2, characterized in that: the chassis (4-1) of the fixed base (4) is symmetrically opened around for installing the first expansion First mounting hole (4-3) for bolt (8). 4. The new bridge preload settlement observation device in bridge widening according to claim 1, characterized in that: the L-shaped anchor pipe support (5) is fixed on the pipe support plate (5-1) and the pipe support plate (5-1). The L-shaped support tube (5-2) on the frame (5-1) is composed of; the dial indicator (1) is connected with the end of the L-shaped support tube (5-2) through the gauge head connecting rod (2), and the indicator The end of the head connecting rod (2) extends into the middle of the L-shaped support pipe (5-2), and the second hex nut (10) for tightening the meter connecting rod (2) is installed on the side wall of the pipe body. 5. The new bridge preload settlement observation device in bridge widening according to claim 4, characterized in that: the pipe frame disk (5-1) of the L-shaped anchor pipe frame (5) is symmetrically opened around The second installation hole (5-3) for installing the second expansion bolt (11). 6. The new bridge preload settlement observation device in bridge widening according to claim 4, characterized in that: the head of the meter connecting rod (2) is provided with a U-shaped clamp (2-1), The measuring head sleeve of the dial indicator (1) is installed on the U-shaped fixing clip (2-1), and the tail of the U-shaped fixing clip (2-1) is connected to the meter connecting rod ( 2). 7. The observation device for preloading settlement of the new bridge in bridge widening according to claim 4, characterized in that: the corner of the L-shaped support pipe (5-2) is provided with a diagonal bar for increasing stability.