Analysis of box culvert using staad pro

Culverts are required to be provided under earth embankment for crossing of water course like streams, Nallas across the embankment as road embankment cannot be allowed to obstruct the natural water way. The culverts are also required to balance the flood water on both sides of earth embankment to reduce flood level on one side of road thereby decreasing the water head consequently reducing the flood menace. Culverts can be of different shapes such as arch, slab and box.

These can be constructed with different material such as masonry brick, stone etc. Since culvert pass through the earthen embankment, these are subjected to same traffic loads as the road carries and therefore, required to be designed for such loads.

This work deals with box culverts made of RCC, with and without cushion. The size, invert level, layout etc. The cushion depends on road profile at the culvert location. The scope of this work has been further restricted to the structural design of box. Toggle navigation I- publisher.

Published in Journal. Dandge, Vaibhav V. Gund, Shubham S. Tilekar, Prathamesh R. Awhale, Jayesh G. Download PDF. View HTML. ABSTRACT: Culverts are required to be provided under earth embankment for crossing of water course like streams, Nallas across the embankment as road embankment cannot be allowed to obstruct the natural water way. Authors: K.

Subjects: Multidisciplinary Academic Research.Box Culverts are required to be provided under earth embankment for crossing of water course like streams, Nallas across the embankment as road embankment cannot be allowed to obstruct the natural water way.

DESIGN OF BOX CULVERT 1X2X2 USING STAAD Pro Part1

The culverts are also required to balance the flood water on both sides of earth embankment to reduce flood level on one side of road thereby decreasing the water head consequently reducing the flood menace. Culverts can be of different shapes such as arch, slab and box. These can be constructed with different material such as masonry brick, stone etc or reinforced cement concrete. Since culvert pass through the earthen embankment, these are subjected to same traffic loads as the road carries and therefore, required to be designed for such loads.

The size, invert level, layout etc. The cushion depends on road profile at the culvert location. The structural design involves consideration of load cases box empty, full, surcharge loads etc. Relevant IRC Codes are required to be referred in the analysis and design of box culverts. This software is an effective and user friendly tool for three dimensional model generation, analysis and multi material design. The structural elements of box culvert are designed to withstand maximum bending moment and shear force.

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Share on Social media. Other Details: Manuscript Id.Retaining walls are structures used for supporting earth at different levels. There are different types of retaining walls such as cantilever retaining wallsgravity retaining walls, counterfort retaining wall, buttressed retaining walls, etc. Counterfort retaining walls have similarities with cantilever retaining walls, with the difference of having triangular web panels spaced at regular intervals at the back of the retaining wall.

These web panels are called counterforts, and they serve the purpose of tying the base slab and the wall stem together. By so doing, they reduce the internal stresses induced in the structure, and increase the weight of the structure for stability.

Counterfort retaining walls can be easily modelled on Staad Pro software, and loaded to obtain the internal forces and deformations due to the retained earth. We are going to demonstrate that using the video below. The data of the retaining wall is shown below. Save my name, email, and website in this browser for the next time I comment. Structville is a media channel dedicated to civil engineering designs, tutorials, research, and general development.

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analysis of box culvert using staad pro

Sunday, April 12, About Us. Home Bridges Analysis and design of counterfort retaining walls using Staad Pro. Counterfort retaining wall.Need help working from home with your Bentley software?

We're here to help - click here. Question: How to model the box culvert on which the vehicle would move in Staad? Following are the illustrations of the "Compression Only" and "Tension Only" spring support to idealize the soil spring action. Accordingly, assign the Tension Only and Compression Only supports to the respective side walls. The resistance imparted by these spring supports would represent the Passive Earth Pressure. Following are the post-processing results after the analysis.

Site Search User. Product Communities More. Sign in. Pro Support Solutions. Pro CE. Pro Analysis Solutions. Pro Design Solutions. Pro General Solutions. Pro General [FAQ].

Pro Import Export Solutions. Pro Miscellaneous Solutions. Pro Miscellaneous [FAQ]. Pro Modeling Solutions. Pro Nuclear Features. Pro Postprocessing FAQ's. Pro Postprocessing Solutions. Pro TechNotes [TN].

Box Culvert Analysis in Staad. Computation of Story Stiffness. Consideration of Global Analysis clause 5. Floor Response Spectrum. Pro TN. Magnifying or Scaling down a model. Member End Forces and Joint Equlibrium. Reference Loads An Introduction. Specifying the selfweight of surface entities as a load item in a load case.Need help working from home with your Bentley software? We're here to help - click here.

If yes then how? For analysis, model it using plate elements. Earth pressure on the sides and hydrostatic pressure on the inside have to be applied as plate pressure loads or trapezoidal loads.

You can also generate them using the hydrostatic option. You can design the individual elements for MX and MY. From the area of steel required, you'll have to find the bar arrangement yourself.

Box Culvert Analysis in Staad.pro

This load is quite substantial, as there would be soil over buden coupled with vehicular load. If the top slab is part of the model as a plate mesh, and properly connected to the side walls which too form a plate mesh, why won't the vertical loads be transferred from the slab to the walls?

The vehicle loads and soil loads could be applied as pressure load on the top slab. But the question is that there is no provision in the design for plate element in staad to design the same for Fx and Fz, both local. It can be designed by staad for Mx, Mz and Sxz and Syz, all local. It will ignore the effect of Fx and FZ.

analysis of box culvert using staad pro

That is why I wrote earlier that you can analyze it, but design is limited to calculation of reinforcement area for MX and MY only. Further, design is not for the wall or slab as a physical entity, but for one element at a time.

You'll have to design for all other forces and find the bar arrangement on your own. The program doesn't do those calculations. If you need those facilities, you'll have to find a program that is specialized for designing culverts. Site Search User. Product Communities More. Sign in. Replies 7 replies Subscribers 96 subscribers Views views Users 0 members are here.

Reply Cancel Cancel. Example 9 of examples manual has a model somewhat similar in nature. Up 0 Down Cancel. Dear SKLose, But the question is that there is no provision in the design for plate element in staad to design the same for Fx and Fz, both local.Spherical tanks are used in several applications such as water storage, nuclear cooling, and storage of liquefied gases such as liquefied natural gas LNG and liquefied petroleum gas.

One of the most common utilization of spherical vessels in the industry is pressurized gas storage because they can withstand higher internal pressure and have fewer size limitations than cylindrical pressure vessels. Spherical LPG tank usually contain pressurized gas inside the steel shell, which is supported by steel columns which transmit the load to a concrete foundation. Spherical tanks have high rigidity and durability.

According to Khanthe performance of a m 3 liquefied petroleum gas LPG tank with a wall thickness of 24 mm under 1. The result showed high resistance to micro cracking and shell deformation, with minimal wall thinning. In this post, we are going to evaluate the potentials of Staad Pro software in the modeling and analysis of LPG sphere tanks.

Design and Modelling of RCC Box Culvert in STAAD.Pro V8i

We are not going to deeply evaluate the design considerations for such structures but you should know that the tank shell should be able to withstand the vapour pressure from the liquefied petroleum gas. This pressure is dependent on temperature and the design temperature is selected from the environment under consideration. The video tutorial for this modeling and analysis is available on special request by sending an e-mail to ubani structville.

Also free contact us for special designs related to infrastructures in oil and gas facilities and tank farms. References Khan F. Save my name, email, and website in this browser for the next time I comment. Structville is a media channel dedicated to civil engineering designs, tutorials, research, and general development. At Structville, we stop at nothing in giving you new dimensions to the profession of civil engineering.

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Sunday, April 12, About Us. Fig 1: Typical LPG spherical tank. Fig 5: 3D rendering of LPG tank model. Fig 6: Lateral bending moment on the tank shell due to gas pressure.A box girder is formed when two web plates are joined by a common flange at both the top and the bottom. The closed cell which is formed has a much greater torsional stiffness and strength than an open section and this is the main reason why box girder configuration is usually adopted in long span bridges.

The torsion and distortion rigidity of box beam is due to the closed section of the box beam. It has been shown by reseachers that long span bridges with wider decks and eccentric loading on cross-section will suffer in curvature in longitudinal and transverse direction, thereby causing heavy distortion of cross-section.

As a result, long span bridges with wide decks should have high torsional rigidity in order to reduce the distortion of cross-section deck to a minimum. This is one of the downsides of T-beam and deck system.

Accordingly, box girders are more suitable for larger spans and wider decks, and any eccentric load that will cause high torsional stresses which will be counteracted by the box section see Figure 1 for typical box girder bridge.

However, despite being an efficient cross-section, we should know that that the analysis of such sections are more complicated due combination of flexure, shear, torsion, and distortion.

In this post, we are going to evaluate the potentials of Staad Pro software in the analysis of box girder bridge subjected to Load Model 1 of Eurocode 1 Part 2. The cross-section of the bridge deck is shown in Figure 2.

The following data was used to model the bridge deck on Staad Pro. When modelled on Staad Pro, the configuration in Figure 4 was obtained. The rendered 3D view is shown in Figure 5. From the results, it could be seen that uniform loads have barely no effect on the torsional-distortional behaviour of box girders, however, unbalanced wheel loads are critical in the behaviour of such structures. We will carry out more studies on this bridge deck behaviour using Staad Pro.

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analysis of box culvert using staad pro

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How to model a Box Culvert fillets in STAAD.Pro?

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analysis of box culvert using staad pro

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