Bridge Pier Design Example, 1 Pier Type and Configuration Many factors are considered when selecting a pier type and configuration. The following sections and the design example below are based on Method B. This example demonstrates basic design features for design of a hammerhead pier supported on a spread footing on rock. 3) Choosing preliminary pier dimensions of a cap, column, and Last Update: Monday, February 02, 2026 Show Previous Memos | Hide Previous Memos A concrete girder bridge pier during construction prior to installation of the bridge deck and parapets, consisting of multiple angled pylons for support (bottom), a horizontal concrete cap (center), and girders (top) with temporary wood bracing The substructure is made of multiple parts as well: This course was adapted from the US Department of Transportation – Federal Highway Administration, Publication No. 2-Column Pier On Drilled Shafts This example illustrates the design of a two column pier with circular columns supported on individual drilled shafts. (2021). The pier is designed for the superstructure described in the Two-Span Continuous Bridge Steel Plate Girder Design Example developed by Attanayake et al. Even in some low seismic areas, designers are paying more attention to the ductility aspect of the design. Description This document provides guidance for the design of a precast, prestressed beam bridge utilizing the AASHTO LRFD Bridge Design Specifications. If I am missing the obvious here I am sorry but I dont see a single reference This document discusses the design of bridge piers and pier caps. Piers are predominantly constructed using reinforced concrete. txt) or read online for free. 2) Analyzing the pier under maximum load combinations from moving traffic lanes across the bridge width. The design is performed according to the ACI 318 Appendix A Strut-and-Tie Modeling (STM) provisions. This torsion is applied to the pier cap as a concentrated torque at the girder locations. , the dead load of the structure), or dynamic wind, earthquake, or impact. Sep 3, 2020 · Chart 8 - Pier Design Chart P - Pile Foundation Design Flowcharts Design Example for a Two-Span Bridge Jun 8, 2002 · Hi, I am in the midst of designing a bridge substructure which includes a solid wall pier. Strut-and-tie modeling is relatively new to ACI 318 as provisions were first included in the 2002 Jun 27, 2017 · Torsion Another force effect that some computer design programs use in pier design is the torsion in the pier cap. The magnitude of the torque at each girder location is calculated differently depending on the source of the torque. 2. A comparative cost analysis of the best-suited protective A, cross-sectional area of superstructure; This document discusses the design of bridge piers and pier caps. For bridges over waterways, the pier INTERMEDIATE PIER DESIGN Substructure loads and load application In the following sections, the word “pier” is used to refer to the intermediate pier or intermediate bent. Jun 27, 2017 · Pier Design Example Obtain Design Criteria Design Step 8. 3. The only load case investigated in this example is Extreme Event II. 3 metre span plate girder for MBG loading. The objective of this paper is to present a design example for designers who do not have a large amount of experience with strut-and-tie modeling. FHWA-IF-04-016, “Debris Control Structures, Evaluation & Countermeasures”, which is in the public domain. 2) Selecting a hammerhead pier type based on site conditions and costs. Design Example Pier - Free download as PDF File (. Different methods can be used for obtaining the reactive forces from the bridge deck such as grillage analysis, finite element analysis, or classical methods such as Courbon’s theory. The design of a hammerhead bent cap is presented. cement. The document discusses the process for designing intermediate piers for a bridge, including: 1) Applying dead and live loads to the pier, with live loads modeled as line and concentrated loads within traffic lanes. Key steps in the design process are outlined, including planning and preliminary design where the pier type, materials, and geometry are selected. Load calculations are also provided, with dead loads, live loads, braking SAMPLE DESIGN of PIER Example : Checking of Pier suitable for 18. Standard ADOT 42-inch f-shape barriers will be used resulting in a bridge configuration of 1’-7” barrier, 12’-0” outside shoulder, two 12’-0” lanes, a 6’-0” inside 13. The document provides details on the design of a reinforced concrete pier for a two span T-beam bridge. pdf), Text File (. 3) Optional simplifications include applying load envelopes or a smaller set For uniformity and simplicity, this design example is based on the AASHTO LRFD Bridge Design Specifications (Seventh Edition, 2014), including the 2015 Interim Specifications. The first design step is to identify the appropriate design criteria. The bridge has spans of 118 feet and 130 feet with zero skew. As the present study focus on the application of displacement-based approaches to pier design, a brief introduction of the two methods, force-based and displacement-based design is summarized in the following sections. The substructure has been analyzed in accordance with the AASHTO LRFD Bridge Design Specifications, 4th Edition, 2007 and the 2008 Interim Revisions. 2 Commentary for 2: Pier types include: Hammerhead, Multi-column, Wall type, Pile bent, Single column Reinforced concrete hammerhead pier May 18, 2020 · In this article, we are going to show how to design reinforced concrete rigid frame bridge pier and pier cap using Staad Pro software. The design methods presented throughout the example are meant to be the most widely used in general bridge engineering practice. Although piers are traditionally designed to resist vertical loads, it is becoming more and more common to design piers to resist high lateral loads caused by seismic events. AF = Annual frequency of bridge element collapse due to vessel collision N = Annual number of vessels classified by type, size, and loading condition which can strike the bridge element PA = Probability of vessel aberrancy PG = Geometric probability of a collision between an aberrant vessel and a bridge pier or span PC = Probability of bridge The bridge pier superstructure transfers axial, lateral, overturning, and possibly torsional loads on the bridge foundations. About this Design Example Description This document provides guidance for the design of a precast, prestressed beam bridge utilizing the AASHTO LRFD Bridge Design Specifications. Pier caps are dimensioned to not affect Jun 27, 2017 · Torsion Another force effect that some computer design programs use in pier design is the torsion in the pier cap. This document summarizes steps in designing a pier for a bridge, including: 1) Obtaining design criteria such as material properties and superstructure information. Loads can be static (i. 1 says that it is to be designed as column about the weaker axis and as a "Pier" about the stronger axis. Pier caps are dimensioned to not affect Jan 1, 2019 · Example 13 illustrates pier design to provide structural resistance to withstand the vehicular collision using LEAP Bridge Substructure software. The example includes the following component designs: Traditional deck design Prestressed beam design Sources of Bridge Design Examples and References PCA (www. Certain material and design parameters are selected to be in compliance with MDOT practice reflected in the Bridge Design System (BDS), the MDOT legacy software. AASHTO 7. e. The analysis and design of the pier cap and stem are then described. It describes several types of bridge piers including single column hammerhead piers, multi-column frame piers, solid wall piers, and straddle bent piers. 1 - Obtain Design Criteria This pier design example is based on AASHTO LRFD Bridge Design Specifications (through 2002 interims). Flowcharts for the bearing design using both Method A and Method B are included in Section 3. Abutments and piers are used to support bridge superstructures, whereas walls primarily function as earth retaining structures. This section contains guidance for the design and detailing of abutments, piers, retaining walls, and noise walls. In most cases the pile caps are constructed from reinforced concrete, but some mostly temporary bridges might employ metal. org) LRFD Design of Cast-in-Place Concrete Bridges AASHTO LRFD Strut & Tie Model Design Examples. Pier design aims to transfer loads from the superstructure to the foundation while considering cost, aesthetics, and sustainability. 3) Optional simplifications include applying load envelopes or a smaller set Before starting actual bridge design a decision has to be made on whether cross-sectional area of fictitious horizontal column at pier i; to use some pier protective system or (0 let the substructure receive (he A, collision impact. The engineer should consider the superstructure type, the characteristics of the feature crossed, span lengths, bridge width, bearing type and width, skew, required vertical and horizontal clearance, required pier height, aesthetics and economy. 1 Commentary for 1: Includes: Concrete strength, Concrete density, Reinforcing steel strength, Superstructure information, Span information, Required pier height Select Optimum Pier Type Design Step 8. Jun 27, 2017 · Design Step 8. 2 Force Based Design Method Force Based Design Method (FBD) is the conventional method to design the metro bridge pier. 1. 7bfxg, cq6vg, v25ibj, cu2wo, bp6n1, ix7han, ebsle, ajyna, tvvod, 47ou,