American Association of State Highway and Transportation Officials (AASHTO) - a complete transportation engineering standards system

Among the international engineering projects undertaken by my country's international engineering contractors, transportation infrastructure such as roads, bridges, ports, and airports account for a large proportion, which increasingly highlights the need to understand and apply the standards of the American Association of State Highway and Transportation Officials. The reason and significance is that many project host countries are greatly influenced by the European and American systems and tend to adopt European and American standards in engineering projects. On the other hand, European and American standards have a relatively high circulation history, circulation degree and recognition in the international community. , in terms of the inherent characteristics of standards, standard systems and status in national and local policy formulation, they are more mature than Chinese standards. However, in terms of narrow standard level, compared with Chinese standards and European and American standards, their adequacy is slightly insufficient. .

To this end, it is necessary to conduct in-depth research on mature standards with high circulation in the world, whether from the perspective of specific project applications or the internationalization path of promoting the return of Chinese standards to the international community. This is also the original intention of this center.

AASHTO Standards, Codes, and Guidelines

As a non-profit research organization on transportation issues in the United States, AASHTO is the most famous highway and transportation association in the United States. Its goal is to establish a safe transportation system and promote economic prosperity and environmental protection while ensuring mobility. Have a greater say in the formulation and promulgation of regulations and policies. AASHTO's standards and specifications cover land, sea and air transportation systems. In terms of roads and bridges, they mainly involve the design, construction, maintenance and operation of transportation facilities for the construction and reconstruction of roads and bridges.

Our research found that AASHTO has a large number of standards, specifications and guidelines that overlap with each other. Although the internal logical relationship is clear but relatively complex, its standard system is consistent with the characteristics of many European and American regional, national and association standards, and it maintains very close cooperation with other associations. Collaborative relationships (such as ASTM). In order to ensure the integrity of the research and facilitate the application and understanding of our contractors, we will focus our research on the AASHTO standards on the following two aspects, of which 1 is the basis of 2 and 2 is the extension of 1.

Divided by theme

The AASHTO standard system divided according to themes is suitable for overall understanding and ensuring the integrity of specific project applications or standard comparisons. Its themes mainly include:

traffic management and economics

Bridges and structures, construction and maintenance

design

Material

planning and environment

Rail and land transport

Safety

Asset Management and Planning

road transport and freight

Related reports

Standard system divided according to specific applications

The AASHTO standards divided according to specific applications are based on the research results of item 1, and combined with AASHTO's application guidelines, it can be understood as a "collection" based on application. Specifically include:

Transportation materials and sampling and testing methods

Design, construction and management of pavements and related structures

Pavement mechanics empirical design method and its correction

Bridge design (LRFD method) (can include seismic design and isolation design)

Bridge construction (LRFD method) (may include guidance on the impact of wind loads during construction)

Design and construction of segmental cast concrete bridges

Road and bridge geometry and linear design

Footbridge design (LRFD method)

LRFD related specifications for road markings, illuminated signs and traffic light support structures

bridge assessment

Bridge temporary engineering design

Bridge temporary engineering construction

Geometric design of temporary highway and road transit facilities (may include minimal traffic roads)

Roadside and roadside lighting design

highway safety

Bridge component inspection

Living bridge design, inspection, evaluation and maintenance

Traffic management and control equipment

Bicycle facility research and development

Highway bridge maintenance and renovation

Note: The feature of item 2 is dynamic updating. Our research scope includes but is not limited to the above content, and also includes many aspects such as project management and road and bridge drainage.

About the center

The Chinese and Foreign Standards Consulting Service (referred to as: Service Center), based on Baifen Information Technology Co., Ltd., was established to enhance the application capabilities of Chinese enterprises in international business cooperation and to promote the internationalization of Chinese standards. The service center brings together standard experts from mainstream international standardization organizations, technical experts in various industries, language experts and language translation professionals in various industries, and has formed an experienced professional consulting team to provide enterprises with high-quality international technology Standard consulting services lay the foundation.

With many years of experience in standard services and combined with international standard systems and project realities, we have continued to conduct in-depth research on the technical standard systems and their applications of relevant countries, and continue to share them with industry colleagues, striving to do our best for Chinese companies to go overseas.

The above information is for reference only. To learn more about Chinese and foreign standards, you can follow our center’s WeChat official account. We welcome experts, teachers, and users to provide valuable suggestions and opinions. We look forward to establishing more in-depth exchanges and cooperation with you and discussing industry development together. new trends and new challenges.